Page 1 Grid Solutions Generator Protection System Generator Protection, Control and Asset Management Instruction manual Product version: 2.0x GE publication code: 1601-0320-A3 (GEK-119652B) *1601-0450-A3*...
Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.
Page 3: Table Of Contents
Table of Contents 1.INTRODUCTION Overview .............................. 1 - 1 Description of the 889 Generator Protection System............. 1 - 2 Security Overview..........................1 - 8 889 Order Codes..........................1 - 9 Specifications...........................1 - 12 Device ................................1 - 12 Protection..............................1 - 12 Control .................................
Page 4 Setpoints Entry Methods ........................4 - 2 Common Setpoints........................... 4 - 3 Logic Diagrams............................4 - 4 Setpoints Text Abbreviations....................... 4 - 5 Device..............................4 - 6 Custom Configuration ..........................4 - 6 Real-time Clock............................4 - 8 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 5 Outputs ............................4 - 103 Output Relays ............................4 - 103 Output Relay 1 (F1) Trip........................4 - 104 Output Relay 2 (F4) programmed as Close................4 - 107 Auxiliary Output Relays ........................4 - 109 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 6 Frequency OOB Accumulation (81A) ..................4 - 273 Thermal Overload Protection (49TOL) ..................4 - 276 Breaker..............................4 - 282 Trip and Close Circuit Monitoring ....................4 - 282 Breaker Arcing Current........................4 - 290 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 7 Breakers ............................... 5 - 6 Switches ............................... 5 - 6 Last Trip Data............................. 5 - 6 Arc Flash............................... 5 - 7 Contact Inputs ........................... 5 - 7 Output Relays ............................ 5 - 7 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 8 Data Logger............................7 - 2 Fault Reports............................7 - 2 Breakers ..............................7 - 3 Breaker Arcing Current........................... 7 - 3 Breaker Health ............................7 - 3 Digital Counters..........................7 - 3 Remote Modbus Device.........................7 - 4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 9 General Maintenance........................8 - 4 In-service Maintenance..........................8 - 4 Out-of-service Maintenance ........................8 - 4 Unscheduled Maintenance (System Interruption) ..............8 - 4 A.APPENDIX A Warranty.............................. A - 1 Revision history..........................A - 1 Major Updates ............................A - 2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 10 VIII 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 11: Introduction Overview
Chapter 1: Introduction Introduction The Multilin 889 relay is a microprocessor-based unit intended for the primary protection of small, medium and large sized generators. Base relay models provide standard generator protection functions plus a number of current and voltage based backup functions.
Page 12: Description Of The 889 Generator Protection System
DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM CHAPTER 1: INTRODUCTION A summary of the available functions and a single-line diagram of protection and control features is shown below. For a complete understanding of each feature operation, refer to Chapter 4: Setpoints. The logic diagrams include a reference to every setpoint related to a feature and show all logic signals passed between individual features.
Page 13 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM current and voltage phasors, such that the resulting values have no harmonic components. RMS (root mean square) values are calculated from one cycle of samples prior to filtering. Protection Elements All voltage, current and frequency protection elements are processed eight times every cycle to determine if a pickup has occurred or a timer has expired.
Page 14 DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM CHAPTER 1: INTRODUCTION Figure 1-2: Single Line Diagram with order code option R1/R5) Slot K2 – Ph Bank Close Trip Monitoring 889 Generator Protection System Slot J - Vx Close Trip Monitoring 59_2 Slot J2 –...
Page 15 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM ANSI Device Description Phase Reversal Thermal (RTD) 49TOL Thermal Overload 50/27 Inadvertent Energization 50BF Breaker Failure Ground Instantaneous Overcurrent 50SG Sensitive Ground Instantaneous Overcurrent Neutral Instantaneous Overcurrent Phase Instantaneous Overcurrent...
Page 16 DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM CHAPTER 1: INTRODUCTION Description Demand Digital Counters Event Recorder Fault Report Flexelements FlexLogic Equations Flexstates Generator Health Report IEC 61850 Communications Metering: current, voltage, power, PF, energy, frequency, harmonics, THD Modbus User Map...
Page 17 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 889 GENERATOR PROTECTION SYSTEM Figure 1-3: Main Menu Hierarchy Targets Status Summary Motor Breakers Setpoints Device Switches System Last Trip Data Inputs Arc Flash Contact Inputs Outputs Output Relays Protection Virtual Inputs Monitoring Virtual Outputs...
Page 18: Security Overview
The basic security feature is present in the default offering of the 889 relay. The 889 introduces the notion of roles for different levels of authority. Roles are used as login names with associated passwords stored on the device. The following roles are available at present: Administrator, Operator, Factory and Observer, with a fixed permission structure for each one.
Page 19: 889 Order Codes
If the user ID credential does not match one of the device local accounts, the 889 automatically forwards the request to a RADIUS server when one is provided. If a RADIUS server is provided, but is unreachable over the network, server authentication requests are denied.
Page 20 889 ORDER CODES CHAPTER 1: INTRODUCTION Figure 1-4: 889 Order Codes 889 – E ** ** ** * Interface 889 Generator Protection System Application Standard 1A three-phase currents (J1) with voltage (J2) Phase Currents Slot J Bank 1 5A three-phase currents (J1) with voltage (J2)
Page 21 When the advanced communications option is selected, the Ethernet port on the main CPU is disabled. Retrofit order codes must be configured using the GE Multilin Online Store (OLS) based on FASTPATH: the existing relay order code and additional requirements.
Page 22: Specifications
Break 2:..............2.00 to 30.00 x CT in steps of 0.01 Operate Time: ............<16 ms at >3 × Pickup at 60 Hz; <20 ms at >3 × Pickup at 50 Hz 1–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 23 UV Pickup Accuracy: .........as per phase voltage inputs Pickup Delay: ............0.00 to 600.00 s in steps of 0.01 s Timer Accuracy: ..........± 3% of delay setting or ± ½ cycle (whichever is greater) Operate Time:............< 3 cycles 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–13...
Page 24 Pickup Delay:............0.00 to 180.00 s in steps of 0.01 s Dropout Delay:.............0.00 to 180.00 s in steps of 0.01 s Timer Accuracy:..........±3% of delay setting or ± ½ cycle (whichever is greater) from pickup to operate 1–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 25 Pickup Level:............0.050 to 30.000 x CT in steps of 0.001 x CT Dropout Level: ............97 to 98% of Pickup Operate Time (no direction transition):..< 16 ms at 3 x Pickup at 60 Hz < 20 ms at 3 x Pickup at 50 Hz 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–15...
Page 26 For 50:0.025: ±0.1A for 0.5A to 4A; ±0.2A for > 4A Operate Time: ............< 12 ms at 3 × Pickup at 60 Hz Timer Accuracy:..........±3% of operate time or ± ¼ cycle (whichever is greater) 1–16 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 27 Level Accuracy:............±0.5% of reading from 10 to 208 V Phases Required for Operation: ....Any one, Any two, All three Undervoltage Curves: ........Definite Time, GE IAV Inverse Time or FlexCurves A/B/C/D Pickup Time Delay:..........0.000 to 6000.000 s in steps of 0.001s Operate Time:............<...
Page 28 Reset Delay: ............0.00 to 6000.000 s in steps of 0.01 Timer Accuracy:..........±3% of operate time or ±15 cycles (whichever is greater) for values greater than 1.1 x pickup Number of Elements: ........2 Number of Elements: ........1 1–18 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 29 7 cycles at 0.3 Hz/s change typically 6.5 cycles at 0.5 Hz/s change Typical times are average Operate Times including variables such as frequency change FASTPATH: instance, test method, etc., and may vary by ± 0.5 cycles. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–19...
Page 30: Control
Detection Radius: ..........180 degree Maximum Fiber Length (Point Sensor):..18 ft Fiber Size: ............... 1000 um Mode:................ Multi-mode Connector: ............. Small Media Interface (SMI) Fiber Type: ............. Plastic Optical Fiber Bend Radius: ............>25 mm 1–20 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 31 Dead Source Function: ........None, LB & DL, DB & LL, DB & DL, DB OR DL, DB XOR DL Dead/Live Levels for Bus and Line:.....0.00 to 1.50 x VT in steps of 0.01 x VT 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–21...
Page 32: Monitoring
Level Accuracy: ........... ± 2% FAULT REPORTS Number of Reports: ........... 15 Captured Data: ............ Pre-fault and fault phasors for all CT and VT banks, pre-fault and fault trigger operands, user-programmable analog channels 1 to 32 1–22 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 33 Timer Accuracy (cold curve):......±500 ms or ±2%, whichever is greater TRIP CIRCUIT MONITOR (TCM) Applicable Voltage: ..........20 to 250 VDC Trickle Current: .............1 to 2.5 mA Timing Accuracy:..........± 3 % or ± 4 ms, whichever is greater 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–23...
Page 34: Recording
Pickup delay: ............0 to 60000 (ms, sec., min.) in steps of 1 Dropout delay: .............0 to 60000 (ms, sec., min.) in steps of 1 Timer accuracy: ..........±3% of delay setting or ±¼ cycle (whichever is greater) from pickup to operate 1–24 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 35 Display message:..........2 lines of 13 characters on each line Dropout timer: ............0.000 to 60.000 s in steps of 0.005 Auto-reset timer: ..........0.2 to 600.0 s in steps of 0.1 Hold timer:..............0.0 to 10.0 s in steps of 0.1 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–25...
Page 36: Metering
0.1 to 2.0 x CT ± 1.0% of reading > 2.0 x CT Angle Accuracy: ..........2° (3° for 25 Hz) For 50:0.025 CT between 0.5A to 15A: CBCT Angle Accuracy:........± 25° 1–26 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 37: Inputs
CBCT (50:0.025): 0 to 15 A Short Term CT Withstand:.......1 second at 100 x rated current 2 seconds at 40 x rated current continuous at 3 x rated current CBCT (50:0.025) Withstand: ......continuous 150 mA 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–27...
Page 38 Backup Retention: ..........1 hour IRIG-B INPUT Auto-detect: ............DC and AM Amplitude Modulation:........1 V to 10 V pk-to-pk DC Shift:..............TTL Input Impedance: ..........40 kΩ Isolation: ..............2 kV 1–28 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 39: Outputs
Operation Mode:..........Self-Reset, Latched, Pulsed, Non-Failsafe, Failsafe FORM-A VOLTAGE MONITOR Applicable voltage:..........20 to 250 VDC Trickle current:............1 to 2.5 mA Timer acurracy: ...........± 3% of operate time or ± 1/4 cycle (whichever is greater) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–29...
Page 40: Power Supply
Nominal DC Voltage: ......... 24 V to 48 V Minimum DC Voltage: ........20 V Maximum DC Voltage:........60 V POWER CONSUMPTION Typical: ..............20 W / 40 VA Maximum: .............. 34 W / 70 VA 1–30 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 41: Communications
Poll Rate: ..............3 minute (OFF, 3 to 120 minutes), the continuous mode poll interval is defined as the poll rate interval Trigger:..............Off (any FlexLogic Operand), the trigger mode is based on the FlexLogic operand designed to trigger the poll 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–31...
Page 42: Testing & Certification
Environmental (Dry heat) IEC60068-2-2 85C 16hrs Relative Humidity Cyclic IEC60068-2-30 6 day humidity variant 2 IEEE/ANSI C37.90.1 4kV, 5 kHz Damped Oscillatory IEEE/ANSI C37.90.1 2.5 kV, 1 MHz Dielectric Between contacts IEEE C37.90 1500Vrms 1–32 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 43: Physical
Operating up to 95% (non condensing) @ 55°C (As per IEC60068-2-30 Variant 2, 6 days) Altitude: 2000m (standard base reference evaluated altitude) 5000m (maximum achievable altitude) Pollution Degree: Overvoltage Category: Ingress Protection: IP54 Front Insulation Class: Noise: 0 dB 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–33...
Page 44: Cautions And Warnings
Follow the requirements of this manual, including adequate wiring size and type, terminal torque settings, voltage, current magnitudes applied, and adequate isolation/ clearance in external wiring from high to low voltage circuits. Use the device only for its intended purpose and application. 1–34 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 45 Use an external disconnect to isolate the mains voltage supply. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–35...
Page 46 This product is rated to Class A emissions levels and is to be used in Utility, Substation FASTPATH: Industrial environments. Not to be used near electronic devices rated for Class B levels. 1–36 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 47: Must-Read Information
Note that the factory role password may not be changed. • In 889 both DNP and IEC104 protocol can work at the same time, but the user has to consider that there is only one point map. So, both protocols use the same configured points.
Page 48: Storage
Customers are responsible for shipping costs to the factory, regardless of whether the unit is under warranty. • Fax a copy of the shipping information to the GE Grid Solutions service department. Use the detailed return procedure outlined at https://www.gegridsolutions.com/multilin/support/ret_proc.htm The current warranty and return information are outlined at https://www.gegridsolutions.com/multilin/warranty.htm...
Page 49: Product Identification
This section describes the mechanical installation of the system, including dimensions for mounting and information on module withdrawal and insertion. Product Identification The product identification label is located on the side panel of the 889. This label indicates the product model, serial number, and date of manufacture. Figure 2-1: Product Label...
Page 50: Dimensions
MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION Dimensions The dimensions (in inches [millimeters]) of the 889 are shown below. Additional dimensions for mounting, and panel cutouts, are shown in the following sections. Figure 2-2: 889 Dimensions 2–2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 51: Mounting
The relay can now be inserted and can be panel wired. Figure 2-3: “V” Tabs Located on Case Side 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–3...
Page 52: Standard Panel Mount
To avoid the potential for personal injury due to fire hazards, ensure the unit is CAUTION: mounted in a safe location and/or within an appropriate enclosure. Figure 2-4: Standard panel mount Figure 2-5: Panel cutout dimensions 2–4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 53: Depth Reducing Collar
Dimensions in inches GE PN 'A' DEPTH 1009-0310 1 3/8" 1009-0311 3" 892703A1.dwg Figure 2-7: Depth reducing collar panel cutout 3.86 3.86 .220 4.74 3.85 9.00 3.85 4.74 7.25 Dimensions in inches 892703A1.dwg 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–5...
Page 54 Mount the required collar (depth 1.375" or 3") on the captive unit using eight screws as shown. Mount the combined unit and collar on the panel using eight screws as shown. 2–6 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 55: Draw-Out Unit Withdrawal And Insertion
Turn off control power before drawing out or re-inserting the relay to prevent mal- FASTPATH: operation. Follow the steps outlined in the diagrams below to insert and withdraw the Draw-out unit. Figure 2-9: Unit withdrawal and insertion diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–7...
Page 56: Removable Power Supply
Follow the steps outlined in the Insert or Remove Power Supply diagram to insert (#1) or remove (#2) the power supply from the unit. Figure 2-10: Insert or Remove the Power Supply Figure 2-11: Unlatch Module (location is marked by arrow) 2–8 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 57: Removable Magnetic Module
CHAPTER 2: INSTALLATION MECHANICAL INSTALLATION Removable Magnetic Module Follow the steps outlined in the diagram below to insert or remove the magnetic module from the unit. Figure 2-12: Insert or Remove the Magnetic Module 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–9...
Page 58: Arc Flash Sensor
Sensor Installation Figure 2-13: AF Sensor - front, side and top view Review the sensor fiber handling guidelines above. FASTPATH: 2–10 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 59 Both the AF sensor connections (CH 1 through CH 4) and the sensor cables are shipped FASTPATH: with dust caps in place to avoid dust contamination. The small rubber dust caps must be removed before operation. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–11...
Page 60: Electrical Installation
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION Electrical Installation Typical Wiring Diagrams The following illustrates the electrical wiring of the Draw-out unit. 2–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 61 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 AMBIENT TEMPERATURE CABLE SHIELD TO BE GROUNDED AT PLC/COMPUTER END ONLY ANY MEASURED OR METERED ANY MEASURED OR 892842A2 ANALOG PARAMETER METERED ANALOG PARAMETER OUTPUTS INPUTS 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–13...
Page 62 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 AMBIENT TEMPERATURE CABLE SHIELD TO BE GROUNDED AT PLC/COMPUTER END ONLY ANY MEASURED OR METERED 892790A2 ANY MEASURED OR ANALOG PARAMETER METERED ANALOG PARAMETER OUTPUTS INPUTS 2–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 63: Terminal Identification
This is to ensure the adjacent lower terminal block does not interfere with the lug body. NOTE Figure 2-16: Orient the Lugs Correctly SCREW WASHER LOWER TERMINAL TERMINAL BLOCK DIVIDER Figure 2-17: Correct Installation Method 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–15...
Page 64 CHAPTER 2: INSTALLATION Figure 2-18: INCORRECT INSTALLATION METHOD (lower lug reversed) A broad range of applications are available for the 889 relays. As such, it is not possible to present typical connections for all possible schemes. The information in this section covers the important aspects of interconnections, in the general areas of instrument transformer inputs, other inputs, outputs, communications and grounding.
Page 65 PORT 5 PORT 1 BANK - J1 BANK - K1 BANK - J2 BANK - K2 AC ANALOG INPUTS Table 2-1: Power Supply H - HV Power Supply Terminal Description Line Neutral Ground 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–17...
Page 66 CLOSE/AUX FC_1 NC FC_1 COM FC_1 NO FC_2 NC FC_2 COM FC_2 NO CONTACT IN_1 CONTACT IN_2 CONTACT IN_3 CONTACT IN_4 CONTACT IN_5 CONTACT IN_6 CONTACT IN_7 CONTACT IN COM DC +24 2–18 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 67 VT3_IN RESERVED VT3_RETURN RESERVED VT4_IN RESERVED VT4_RETURN RESERVED Table 2-6: RTD Inputs Terminal Description RTD1_HOT RTD1_COMP RTD1/2_RETURN RTD2_HOT RTD2_COMP RTD3_HOT RTD3_COMP RTD3/4_RETURN SHIELD RTD4_HOT RTD4_COMP RTD5_HOT RTD5_COMP RTD5/6_RETURN RTD6_HOT RTD6_COMP SHIELD RESERVED 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–19...
Page 68: Wire Size
The 889 relay has four (4) current inputs in each J slot and K slot. Three of them are used for connecting to the phase CT phases A, B, and C. The fourth input is a ground input that can be connected to either a ground CT placed on the neutral from a Wye connected transformer winding, or to a “donut”...
Page 69: Ground Ct Inputs
PHASE CT PRIMARY setpoint. The sensitive ground current input can be connected to a Zero Sequence CT for increased sensitivity and accuracy when physically possible in the system. Figure 2-21: Ground Inputs 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–21...
Page 70 0.5 A primary may be detected with the GE Digital Energy 50:0.025 CT. Only one ground CT input tap must be used on a given unit. Note that when this CT input is selected for the Ground Fault function, fixed ratio of 50:0.025 A is used by the relay.
Page 71: Zero-Sequence Ct Installation
UNSHIELDED CABLE SHIELDED CABLE Ground connection to neutral Stress cone must be on the source side Source Source shields Ground outside CT To ground; LOAD must be on load side 996630A5 LOAD 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–23...
Page 72: Voltage Inputs
10 to 240 V range. The 889 supports wye and delta (or open delta) VT connections. The typical open delta VT wiring diagram is shown in the following figure: Open Delta VT Connections. The typical wye VT wiring diagram is shown in the figure: Typical Wiring diagram.
Page 73: Control Power
A tinned copper, braided, shielding and bonding cable should be used. As a minimum, 96 strands of number 34 AWG should be used. Belden catalog number 8660 is suitable. Figure 2-26: Control Power Connection 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–25...
Page 74: Contact Inputs
Wet or Dry input signal types can be connected to contact input terminals as shown in the figure: Wet and Dry Contact Input Wiring Examples. Dry inputs use an internal +24V that is supplied by the 889. The voltage threshold must be set to 17V for the inputs to be recognized using the internal +24V.
Page 75 Digital In_3 Digital In_10 Digital In_17 Digital In_3 Shield Digital In_10 Digital In_4 Digital In_11 Digital In_18 Digital In_4 Reserved Digital In_11 Digital In_5 Digital In_12 Digital In_19 Digital In_5 Reserved Digital In_12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–27...
Page 76 Digital In_5 Digital In_12 Digital In_5 Digital In_6 Digital In_13 Digital In_6 Digital In_7 Digital In_14 Digital In_7 Common Common Common +24V +24V +24V RELAY_8 RELAY_16 RELAY_8 RELAY_8 RELAY_16 RELAY_8 RELAY_8 RELAY_16 RELAY_8 2–28 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 77: Serial Communications
CAUTION: that the common terminals of each RS485 port are tied together and grounded only once, at the master or at the 889. Failure to do so may result in intermittent or failed communications. The source computer/PLC/SCADA system should have similar transient protection devices installed, either internally or externally.
Page 78: Irig-B
DC level shift or amplitude modulated (AM) form. The type of form is auto-detected by the 889 relay. Third party equipment is available for generating the IRIG-B signal; this equipment may use a GPS satellite system to obtain the time reference so that devices at different geographic locations can also be synchronized.
Page 79 • Interfacing via the EnerVista 8 Series Setup software. This section provides an overview of the interfacing methods available with the 889 using the relay control panel and EnerVista 8 Series Setup software. For additional details on interface parameters (for example, settings, actual values, etc.), refer to the individual chapters.
Page 80: Interfaces Front Control Panel Interface
Fourteen other status LEDs are available, 12 of which are programmable. Figure 3-1: Front Control Panel Figure 3-2: 889 Front Control Panel) The USB port is intended for connection to a portable computer. 3–2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 81: Graphical Display Pages
Harmonics Harmonic Detection Fault Reports Synchrocheck Breakers Power Energy Dig Counters Power Factor Remote Modbus Device Current Demand Clear Records Power Demand Directional Power Arc Flash RTDs RTD Maximums Analog Inputs FlexElements 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–3...
Page 82: Working With Graphical Display
Pages Figure 3-4: Typical paging operation from the Main Menu There are two ways to navigate throughout the 889 menu: using the pushbuttons corresponding to the soft tabs from the screen, or by selecting the item from the list of items on the screen using the “Up”...
Page 83 It is also used to save the desired value for any selected setpoint. The Up, and Down pushbuttons are used to select/highlight an item from a menu, as well as select a value from the list of values for a chosen item. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–5...
Page 84: Single Line Diagram
Setpoints > Device > Front Panel > Display Properties > Color Scheme Single Line Diagram for 889 and Breaker/Generator status color The 889 has a single line diagram (SLD) that represents the power system. The single line diagram provided is pre-configured to show: •...
Page 85 Metering\ Frequency 1-J\ J2-3VT Frequency V/ Hz Metering\ Volts per Hertz\ Volts Per Hertz 1 Metering\ Power 1\ Pwr1 Apparent Metering\ Power 1\ Pwr1 Real Metering\ Power 1\ Pwr1 Reactive Metering\ Power 1\Pwr1 PF 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–7...
Page 86: Rugged And Membrane Front Panel Leds
• Reset mode: self-reset or latched The 889 front panel provides two columns of 7 LED indicators each, and 3 LED pushbutton indicators. The “IN-SERVICE” (LED 1) and the “PICKUP” (LED 4) indicators from the first LED column are non-programmable LEDs. The bottom 3 LED indicators from the first column, and the 7 LED indicators from the second LED column are fully programmable.
Page 87 CHAPTER 3: INTERFACES FRONT CONTROL PANEL INTERFACE Figure 3-11: LEDs for 889 relay with 3-R1/R5 (GSU included) Some status indicators are common while some are feature specific which depend on the availability in the order code. The common status indicators in the first column are described below.
Page 88: Home Screen Icons
RESET button on the front panel is pressed after the operand is reset. Default labels are shipped in the package of every 889, together with custom templates. A custom LED template is available for editing and printing, refer to publication GET-20035 from http://www.gegridsolutions.com/multilin.
Page 89: Relay Messages
PB action. The PB Target Message is displayed for 10 seconds then defaults to the screen that was displayed before pressing the pushbutton. The PB Target Message is recorded in the list with other generated Target Messages. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–11...
Page 90: Self-Test Errors
The Critical Failure Relay (Output Relay 8) is energized when the relay is in-service, and no NOTE: major error is present NOTE Under both conditions, the targets cannot be cleared if the error is still active. Figure 3-13: Minor Errors 3–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 91 CPU and LEDs, Keypad or peripheral memory devices Invalid MAC MAC address is not in Every 1 second Address the product range Calibration Error Unit has default Boot-up and Every 1 calibration values second 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–13...
Page 92 1. – Failure is logged after the detection of 5 consecutive failures 2. $ – is the slot ID (i.e., F, G, H etc.) 3–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 93: Out Of Service
The factory default flash message time is 2 seconds. Label Removal The following procedure describes how to use the label removal tool. Bend the tabs of the tool upwards as shown in the image. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–15...
Page 94 Slide the label tool under the user-programmable pushbutton label as shown in the next image. Make sure the bent tab is pointing away from the relay. Remove the tool and user-programmable pushbutton label as shown in image. 3–16 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 95: Software Interface
The EnerVista 8 Series Setup software can run without a 889 connected to the computer. In this case, settings may be saved to a file for future use. If a 889 is connected to a PC and communications are enabled, the 889 can be programmed from the setting screens. In addition, measured values, status and trip messages can be displayed with the actual value screens.
Page 96: Installing The Enervista 8 Series Setup Software
In the EnerVista Launchpad window, click the Add Product button and select the 889 Protection System as shown below. Select the Web option to ensure the most recent software release, or select CD if you do not have a web connection, then click the Add Now button to list software items for the 889.
Page 97 If you are going to communicate from your computer to the 889 Relay using the USB port: 10. Plug the USB cable into the USB port on the 889 Relay then into the USB port on your computer. 11. Launch EnerVista 8 Series Setup software from LaunchPad.
Page 98: Upgrading The Software
The latest EnerVista software and firmware can be downloaded from: Software https://www.gegridsolutions.com/ After upgrading, check the version number under Help > About. If the new version does not display, try uninstalling the software and reinstalling the new versions. 3–20 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 99: Connecting Enervista 8 Series Setup Software To The Relay
USB is selected in the interface drop-down list. Select “USB” and press the Connect button. Ethernet or WiFi can also be used as the interface for Quick Connect as shown next. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–21...
Page 100 When connected, a new Site called “Quick Connect” appears in the Site List window. The Site Device has now been configured via the Quick Connect feature for either USB or Ethernet communications. Proceed to Connecting to the Relay next, to begin communications. 3–22 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 101: Configuring Ethernet Communications
Enter the IP address, slave address, and Modbus port values assigned to the 889 relay (from the Setpoints > Device > Communications menu). Click the Read Order Code button to connect to the 889 and upload the order code. If a communications error occurs, ensure that the Ethernet communication values correspond to the relay setting values.
Page 102: Working With Setpoints & Setpoints Files
File to Device" and 2) saving Logic Designer changes online. Individual setting changes from the device front panel or Enervista 8 Series Setup software Online Window do not change the DEVICE IN SERVICE state. 3–24 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 103: Engaging A Device
Click = to exit from the keypad and keep the new value. Click on X to exit from the keypad and retain the old value. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–25...
Page 104: File Support
In the Setpoints > System Setup > Voltage Sensing dialog box, click on Save to save the values into the 889. Click YES to accept any changes and exit the window. Click Restore to retain previous values. Click Default to restore Default values.
Page 105: Downloading & Saving Setpoints Files
CHAPTER 3: INTERFACES SOFTWARE INTERFACE The 889 displays relay setpoints with the same hierarchy as the front panel display. Downloading & Saving Back up a copy of the in-service settings for each commissioned unit, so as to revert to the...
Page 106: Creating A New Setpoints File
Select the file name and path to store the file, or select any displayed file name to replace an existing file. All 889 setpoint files should have the extension ‘.cid’ (for example, ‘889 1.cid’). Click OK to complete the process. Once this step is completed, the new file, with a complete path, is added to the 889 software environment.
Page 107: Upgrading Setpoints Files To A New Revision
Upgrading Setpoints It is often necessary to upgrade the revision for a previously saved setpoint file after the Files to a New 889 firmware has been upgraded. This is illustrated in the following procedure: Revision Establish communications with the 889 relay.
Page 108: Printing Setpoints
Setpoint lists can be printed in the same manner by right clicking on the desired file (in the file list) or device (in the device list) and selecting the Print Device Information or Print Settings File options. 3–30 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 109: Loading Setpoints From A File
The following procedure illustrates how to load setpoints from a file. Before loading a setpoints file, it must first be added to the 889 environment as described in the section, Adding Setpoints Files to the Environment.
Page 110: Quick Setup
The Quick Setup item is accessed from the EnerVista software from different screens. Online and offline settings changes are made from the corresponding Quick Setup screen. Figure 3-15: 889 Quick Setup (Online) tree position Figure 3-16: 889 Quick Setup (Offline) tree position Quick Setup is designed to allow quick and easy user programming.
Page 111 12001 and tries to save it. Quick Setup displays a warning dialog. Pressing OK leaves the setting value at 12001, but not 12000 (max. value) as is the case with other views. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–33...
Page 112: Upgrading Relay Firmware
Note that uploading firmware to a relay having a Communications card must be done with “Port 4 operation” configured as independent. Before upgrading firmware, it is very important to save the current 889 settings to a file on FASTPATH: your PC. After the firmware has been upgraded, it will be necessary to load this file back into the 889.
Page 113 The firmware filename has the following format. The following screen appears. Select YES to proceed. EnerVista 8 Series Setup software now prepares the 889 to receive the new firmware file. The 889 front panel momentarily displays “Upload Mode”, indicating that it is in upload mode.
Page 114 After the Boot 1 upload is completed, the EnerVista 8 Series Setup software again requests the user to reboot the relay. Make sure to reboot the relay first and then press the OK. Not the other way around. CAUTION: 3–36 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 115 Wait for the Comms upload process to complete. Wait for the Mains upload process to complete. The EnerVista 8 Series Setup software notifies the user when the 889 has finished loading and notifies the user to Cycle power to the relay to complete firmware update.
Page 116: Advanced Enervista 8 Series Setup Software Features
GE symbols (similar to ANSI). The following figure shows the objects that are available for design in the SLD Configurator and their maximum usage limits [X]. The maximum limit reflects the maximum possible order code. 3–38 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 117 The control objects consist of selectable breakers and disconnect switches. The following figure shows the different symbols in the GE Standard style and IEC style. If the switching element is tagged, blocked, or bypassed, indicators with the letters “T”, “B”, and “By”...
Page 118 0 degrees. Orientation in multiple directions allows the user to configure the single line diagram according to the existing drawings and ensure the correct side for the fixed/moving contacts. 3–40 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 119 Blocked” signal in both On and Off state. Figure 3-22: Reclose Blocked signal In addition, Remote Breaker status objects are added for GE and IEC style. Remote breaker status allows monitoring of three distant breakers. These objects are not controllable and hence cannot be used for selection and operation.
Page 120 On the rugged front panel, the up and down keys can be pressed for navigation and on the membrane front panel, up, down, left, and right keys can be pressed. With the rugged front panel navigation, pressing down sequentially rotates through all the available breakers 3–42 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 121 ), the browsing highlight around the object disappears. If an object is Message Timeout selected, Home button operation will be prohibited. The object must be de-selected by pressing escape in order for the home button to function. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–43...
Page 122 Tagged by operator. No operation allowed. Open or Closed T B By Tagged by operator. No operation allowed. For detailed tagging, blocking and bypassing operations, refer to the section Local Control Mode (breakers and switches). 3–44 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 123: Flexcurve Editor
• The user can load Trip Times from a CSV File • The screen above shows the model followed by 889 for viewing FlexCurves. Select Initialize to copy the trip times from the selected curve to the FlexCurve. Transient Recorder...
Page 124 • From the window main menu bar, press the Preference button to open the COMTRADE Setup page, in order to change the graph attributes. 3–46 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 125 The Waveform Capture window reappears based on the selected graph attributes. To view a vector graph of the quantities contained in the waveform capture, press the View Phasors button to display the following window: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–47...
Page 126 SOFTWARE INTERFACE CHAPTER 3: INTERFACES 3–48 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 127: Protection Summary
With the software running and communications established, select the Setpoints > Protection Summary menu item to open the Protection Summary window. The Protection Summary screen is as follows: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–49...
Page 128: Offline Settings File Conversion
The EnerVista 8 Series Setup software reduces the manual effort required when moving from an older product to the 889. The feature takes an existing settings file provided by the user and generates a new settings file compatible with the 8 Series order code specified by the user.
Page 129: Conversion Summary Report
Status Icons The status icon shows the conversion results: Manual configuration required Successful conversion Value is not supported 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 3–51...
Page 130 EnerVista taskbar or it can be printed from the “GUI” print button. Although the report shows successful conversion (green checkbox), the settings must still NOTE: be verified before putting the relay in service. NOTE 3–52 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 131 Setpoints Setpoints Main Menu The 889 has a considerable number of programmable setpoints, all of which make the relay extremely flexible. These setpoints have been grouped into a variety of menus which are available from the paths shown below. Each setpoints menu has sub-sections that describe in detail the setpoints found on that menu.
Page 132: Setpoints Setpoints Main Menu
Any of these methods can be used to enter the same information. A computer, however, makes entry much easier. Files can be stored and downloaded for fast, error free entry when a computer is used. To facilitate this process, the GE EnerVista CD with the EnerVista 4–2...
Page 133: Common Setpoints
PICKUP DELAY: The setpoint selects a fixed time interval to delay an input signal from appearing as an output. • DROPOUT DELAY: The setpoint selects a fixed time interval to delay dropping out the output signal after being generated. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–3...
Page 134: Logic Diagrams
889 relay. The targets disappear from the screen when “Self-Reset” is selected, and the conditions are cleared. The targets stay on the screen, when “Latched” is selected, and the conditions are cleared.
Page 135: Setpoints Text Abbreviations
Hz: Hertz • MAX: maximum • MIN: minimum • SEC, s: seconds • UV: undervoltage • OV: overvoltage • VT: voltage transformer • Ctrl: control • Hr & hr: hour • O/L: overload 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–5...
Page 136: Device
(greyed out). • In Regular configuration mode, all function/features and setpoints of the device are editable and nothing is hidden or greyed out. 4–6 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 137 Instantaneous Direction Disabled Direction Disabled Voltage Restraint Disabled Voltage Restraint Disabled Relays Do Not Operate Volt Lower Limit p.u. PTOC 1 Block Relays Do Not Operate Events Enabled Targets Self-Reset PTOC 1 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–7...
Page 138: Real-Time Clock
PTP and IRIG-B can be swapped. If both PTP and IRIG-B are available to the 889, by default the 889 clock syncs to PTP over IRIG-B. If PTP is not available the 889 CPU syncs the internal clock to IRIG-B.
Page 139: Ptp Configuration
Ethernet switch it is connected to is 9000 ns and that the delay from the switch to the relay is 11000 ns, then the mean delay is 10000 ns, and the path delay asymmetry is +1000 ns. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–9...
Page 140: Clock
PTP time. If set to 2 and IRIG-B is available, the relay syncs its reference to IRIG-B time. Clock Path: Setpoints > Device > Real Time Clock > Clock 4–10 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 141 Range: 1st, 2nd, 3rd, 4th, Last Default: Not Set DST END DAY Range: SUN to SAT (all days of the week) Default: Not Set DST END HOUR Range: 0 to 23 Default: 2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–11...
Page 142: Sntp Protocol
Range: Standard IP Address Format Default: 0.0.0.0 SNTP 2 UDP PORT NUMBER Range: 0 to 65535 in steps of 1 Default: 123 The SNTP and PTP settings take effect after rebooting the relay. FASTPATH: 4–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 143: Security
- Non-alphabetic characters (for example, ~, !, @, #, $,%, &) PASSWORD RECOVERY PROCEDURE In the event of losing all passwords, the 889 can be reset to factory defaults by following the procedure below: The customer sends an email to the customer support department providing a valid serial number and using a recognizable corporate email account.
Page 144: Basic Security
Access timeout is the time of idleness before a logged in user is automatically logged out. This timeout applies to all users, independent of the communication channel (serial, Ethernet or direct access). 4–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 145 REQUIRE PW FOR D/T CHANGE The date/time can be set by any role, if this setting is disabled. If this setting is enabled the date/time can only be set by the Administrator. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–15...
Page 146: Cybersentry
Commands may be issued freely through protocols other than Modbus (e.g., DNP, IEC 104, FASTPATH: and, IEC 61850) without user authentication or encryption of data taking place, even if the relay has the advanced security feature enabled. 4–16 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 147 If the user enters the wrong password, the “Authentication Failed!” message is displayed. – If the maximum failed authentications occur, the “Account Blocked!” message is displayed. – The Observer user role is the default choice and it does not require a password. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–17...
Page 148 The Access timeout is the time of idleness before a logged in user is automatically logged out. This timeout setting applies to all users, independent of the communication channel (serial, Ethernet or direct access). 4–18 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 149 The two menu items: Change Administrator Password, and Change Operator Password are available only to Administrator, which is the only role that has permissions to change passwords for itself and the other local roles. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–19...
Page 150 For this reason, if these settings have been modified, offline, NOTE they will not be written during the file write operation. 4–20 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 151 The following are settings that need to be configured through EnerVista, in order to set up communication with a Radius server on 889. For configuring the RADIUS server itself, consult the RADIUS documentation. An example is provided, see Communications Guide.
Page 152 AUTHENTICATION FAIL Operand set for Failed Authentication self test and alarm UNAUTH SETTING CHANGE ATTEMPT Operand set for unauthorized setting change action RADIUS SRV UNAVAILABLE Operand set for RADIUS servers unavailable self test 4–22 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 153: Communications
When a ModBus master such as the EnerVista 8 Series Setup software communicates to the 889 over Ethernet, the 889 slave address, TCP port number and the 889 IP address for the associated port must be configured and are also configured within the Master for this device.
Page 154 Range: 1 to 254 in steps of 1 Default: 254 For the RS485 ports each 889 must have a unique address from 1 to 254. Address 0 is the broadcast address to which all Modbus slave devices listen. Addresses do not have to be sequential, but no two devices can have the same address, otherwise conflicts resulting in errors occur.
Page 155 Role Characters 7 and 8 62245 F325 29556 7374 Role Characters 9 and 10 62246 F326 29281 7261 Role Characters 11 and 12 62247 F327 29807 746F Role Characters 13 and 14 62248 F328 29184 7200 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–25...
Page 156 Clear All Records Clear Events Clear Energy Use Data 4096 Force Virtual Input 1 A complete list of Modbus Commands is found at the end of chapter 11. Function Format for “Clear All” command: 4–26 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 157 Value Description Reset Clear All Records Clear Events Clear Energy Use Data 4096 Force Virtual Input 1 Table 4-17: Function Format for Reset command Slave # Function Operation Code Code Value 0001 FF00 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–27...
Page 158: Rs485
This setting switches WiFi functionality on/off. By default WiFi is enabled in the basic offering, but it is disabled in software options that offer CyberSentry. WiFi IP Address / Subnet Mask The default IP address is 192.168.0.x, where x is calculated as: 4–28 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 159 Ideally the passphrase should be set through EnerVista and not directly from the Keypad, NOTE: where there are limitations in terms of space and types of characters supported. However, for convenience, the key setting is available from the Keypad as well. NOTE 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–29...
Page 160 Start EnerVista on a PC and use the Discover function, all relays within range appear and are populated in EnerVista for initial configuration and commissioning. Once the relay is configured, change the 8-Series relay default WiFi SSID and Passphrase settings before the relay goes into service. 4–30 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 161: Usb
Ethernet port located on the base CPU is disabled) Protocols: Modbus TCP, DNP 3.0, IEC 60870-5-104, IEC 61850 GOOSE, IEEE 1588, SNTP, IEC 62439-3 clause 4 (PRP) Wavelength: 1310 nm Typical link distance: 4 km 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–31...
Page 162 CHAPTER 4: SETPOINTS Network Settings Menu The following are the network settings menu of the 889 to accommodate the features of the 889 product. If the communications card is installed network port 1 is no longer available. When using more than one Ethernet port, configure each to belong to a different network or subnet using the IP addresses and mask, else communication becomes unpredictable when more than one port is configured to the same subnet.
Page 163: Routing
LAN’s. In this mode of operation both ports cannot be connected to the same LAN. The receiving devices (889 ) process the first frame received and discard the duplicate through a link redundancy entity (LRE) or similar service that operates below layer 2.
Page 164 255.255.255.0 The route destination must not be a connected network. The route gateway must be on a connected network. This rule applies to the gateway address of the default route as well. 4–34 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 165 This gateway is the address of Router 2, which is “aware” of destination 10.1.3.0 and is able to route packets coming from the 8 Series device and destined to EnerVista. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–35...
Page 166: Dnp Protocol
Range: 0 to 65519 in steps of 1 Default: 65519 The DNP address sets the DNP slave address. This number identifies the 889 on a DNP communications link. Each DNP slave must be assigned a unique address. DNP Client Address 1 (2) Range: standard IP address Default: 0.0.0.0...
Page 167: Dnp / Iec104 Point Lists
This setting specifies a time delay for the detection of dead network TCP connections. If there is no data traffic on a DNP TCP connection for greater than the time specified by this setting, the connection will be aborted by the 889. This frees up the connection to be re-used by a client.
Page 168 FACTOR setting is set to “/ 1000”, and the Phase A voltage is 72000 V, the Phase A voltage is sent on to the 889 as 72. The settings are useful when analog input values must be adjusted to fit within certain ranges in DNP masters.
Page 169 When a freeze function is performed on a Binary Counter point, the frozen value is available in the corresponding Frozen Counter point. 889 Digital Counter values are represented as 16 or 32-bit integers. The DNP 3.0 protocol defines counters to be unsigned integers.
Page 170: Iec 60870-5-104
The IEC 60870-5-104 communications protocol is supported on Ethernet ports 4 and 5 only. Setting changes become active after rebooting. In 889 both DNP and IEC104 protocol can work at the same time, but the user has to FASTPATH: consider that there is only one point map. So, the two protocols use the same data mapping, i.e., same point index and same point source.
Page 171 “Network - TCP”, the IEC104 protocol can be used over TCP/IP on channels 1 or 2. The IEC104 NETWORK CLIENT ADDRESS settings can force the 889 to respond to a maximum of two specific IEC104 masters which own the configured IP Addresses. The settings in this sub-menu are shown below.
Page 172: Iec 60870-5-103
Setup software. A rebooting MUST be done before any changes made take affect. The IEC 61850 Configurator The 889 supports the IEC 61850 protocol which is identified by order code option “2E”. The IEC 61850 configurator is found in both the online and offline section of the EnerVista 8 Series Setup software for configuring the online 889 and offline 889 settings file respectively.
Page 173 Read Device Settings: The menu option reads all the settings from the relay by TFTP and creates an 889 file with extension *.CID. The created *.CID file consists of two sections. A private section where all non IEC 61850 settings are available, and a public section in which IEC 61850 related settings are implemented.
Page 174 IEC 61850 Configurator is open. The user must close the IEC61850 session to perform other operations in the EnerVista software. The IEC 61850 configurator consists of five sections: • ICD/CID • Settings • Reports • GOOSE Reception • GOOSE Transmission 4–44 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 175: Remote Modbus Device
Range: 0 to 10000 in steps of 1 Default: 502 POLL RATE Range: OFF, 3 to 120 minutes in steps of 1 Default: 3 minutes TRIGGER Range: Any FlexLogic operand fault: Off 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–45...
Page 176: Transient Recorder
In “Protected” mode, the relay will keep the number of records corresponding to the selected number of records, without saving further records that are beyond the selected number of records. 4–46 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 177 Alarm LED changes to “high”. DIGITAL INPUT 1 to 64 Range: Off, Any FlexLogic operand Default: Off ANALOG INPUT 1 to 16 Range: Off, Any FlexLogic analog parameter Default: Off 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–47...
Page 178: Data Logger
Data Logger Function is set to “Triggered”. TRIGGER POSITION Range: 0 to 50% steps of 1% Default: 20% This setpoint defines the percentage of buffer space that is used for recording pre- trigger samples. 4–48 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 179 “Rate”. The mean (average) is calculated simply using the well known ratio between the sum of all the values and their number over the time interval. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–49...
Page 180: Fault Reports
The fault report continues with the following information: • All current and voltage phasors (one cycle after the fault trigger) • Pre-fault values for all programmed analog channels (one cycle before pre-fault trigger) 4–50 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 181 These settings specify an actual value such as voltage or current magnitude, true RMS, phase angle, frequency, temperature, etc., to be stored should the report be created. Up to 32 analog channels can be configured. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–51...
Page 182: Event Data
Fourteen other status LEDs are available, 12 of which are programmable. Please refer to Front Control Panel Interface. The USB port on the Front Panel, is intended for connection to a portable PC. FASTPATH: 4–52 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 183: Programmable Leds
LED 3: ALARM - see the default setpoint above and the description • LED 4: PICKUP – non-programmable. The LED is hardcoded to show a green light when at least one element has picked up. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–53...
Page 184: Programmable Pushbuttons
Messages. In latched mode, user-defined messages can also be associated with each pushbutton and displayed when the pushbutton is ON or changing to OFF. Path: Setpoints > Device > Programmable PBs > Pushbutton 1(X) 4–54 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 185 The PUSHBTN 1 OFF TEXT setting is linked to PUSHBUTTON 1 OFF operand and will be displayed in conjunction with PUSHBTN 1 ID only if the pushbutton element is in “Latched” mode. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–55...
Page 186 “active” status after the pushbutton has been released. The length of time the operand remains on has no effect on the pulse duration. The setting is required to set the duration of the pushbutton operating pulse. EVENTS Range: Disabled, Enabled Default: Enabled 4–56 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 187 CHAPTER 4: SETPOINTS DEVICE Figure 4-12: Pushbuttons Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–57...
Page 188: Tab Pushbuttons
This setting specifies the 13-character line of the user-programmable message and is intended to provide the ID information of the pushbutton. This text is used to describe the pushbutton in the FlexLogic operands. 4–58 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 189 This setting specifies the time required for a pushbutton to be pressed before it is deemed active. The timer is Reset upon release of the pushbutton. Note that any pushbutton operation will require the pushbutton to be pressed a minimum of 100ms. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–59...
Page 190 “active” status after the pushbutton has been released. The length of time the operand remains on has no effect on the pulse duration. The setting is required to set the duration of the pushbutton operating pulse. EVENTS Range: Disabled, Enabled Default: Enabled 4–60 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 191: Annunciator
While in the annunciator panel, if no action is taken, the screen returns back to the home page after the timeout setting. Path: Setpoints > Device > Front Panel > Annunciator > Indicator 1 (36) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–61...
Page 192 Enter key again acknowledges the alarm and pressing the Escape button discards the message. When the alarms are active under latched mode, a power loss retains the previous state of the alarm as the alarm states are stored in non-volatile memory. 4–62 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 193: Display Properties
The target message interrupts the message timeout, overriding it. The message timeout starts timing after each target message, and if no more activity is recorded for the specified time, the display goes back to the default screen. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–63...
Page 194: Default Screens
Range: varieties of screens for selection Default: SLD (for Default Screen 1 only), Off (for Default Screen 2/3 only) The setpoint enables the user to input up to 3 default screens from a list of screens. 4–64 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 195: Home Screens
Default: Tab PB Summary HOME SCREEN 3 Range: All available pages Default: Annunciator Pg 1 HOME SCREEN 4 Range: All available pages Default: Values HOME SCREEN 5 to 10 Range: All available pages Default: Off 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–65...
Page 196: Resetting
When the relay is commissioned and the Validate CANBUS IO command is set to Yes the current auto detect value is saved to non-volatile memory. This value is then used to configure all display dependencies and used in self-test validation. 4–66 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 197 Lower the Voltage Cutoff and Current Cutoff levels with care as the relay accepts lower FASTPATH: signals as valid measurements. Unless dictated otherwise by a specific application, the default settings of “0.020 pu” for current and “1.0 V” for voltage are recommended.” 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–67...
Page 198: System
Enter the rated Ground CT primary current for the ground current input for the selected Current 1 bank. Path: Setpoints > System > Current Sensing > Current Bank 2-K1 CT BANK NAME Range: Any combination of 13 alphanumeric characters Default: CT Bank 2-K1 4–68 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 199: Voltage Sensing
The Voltage Sensing menu provides the setup for all VTs (PTs) connected to the relay voltage terminals. The 889 can be connected to 4 VTs, i. e. three-phase VTs from either a Wye (Star) or a Delta connection, and one auxiliary VT. The VT inputs setup for the 889 is shown below: Path: Setpoints >...
Page 200: Power Sensing
14400:120, the voltage value entered would be 120 V, i.e. 14400/120. Power Sensing The power computation in the 889 relay is performed using the voltage and current inputs from the card inserted in slot J. In cases when the connected VTs and CTs have opposite polarity, the power sensing menu provides for inverting the power measurement.
Page 201: Power System
Upon detecting valid frequency on the main source, the tracking will be switched back to the main source. If a stable frequency signal is not available from any source, then the tracking frequency defaults to the nominal system frequency. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–71...
Page 202: Generator
Range: 1 to 90 min in steps of 1 min Default: 15 min This setting adjusts the period of time over which average values for generator records are calculated, such as the generator average load. 4–72 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 203: Transformer
CHAPTER 4: SETPOINTS SYSTEM Transformer The Transformer setup is only available for the 889 with Overall Differential Protection NOTE: order code. Two-winding Transformer setup is used to compensate for transformer winding connection in overall differential protection. NOTE INTRODUCTION An 889 unit ordered with the overall differential protection utilizes a two-winding transformer setup for GSU winding compensation.
Page 204: Windings
Grounding Not Within Zone All transformer windings from 889 are associated with CT bank inputs. When overall differential protection (87O) is selected in the order code option (12 A - Advanced protection with K2 as CT bank instead of VT bank), the relay CT banks are mapped to...
Page 205 Traditionally, these corrections were accomplished by interposing CTs and tapped relay windings with some combination of CT connections. The 889 simplifies these configuration issues. All CTs at the transformer can be connected wye (polarity markings pointing away from the transformer). User-entered settings in the relay characterizes the transformer being protected and allows the relay to automatically perform all necessary magnitude, phase angle, and zero-sequence compensation.
Page 206 To compute differential and restraint currents, the 889 relay uses Winding 1 phase-phase voltage and the primary CT rating from the Signal input used for Winding 1. The 889 relay computes magnitude compensation factors for Winding 2 currents as shown below: - Phase-to-phase voltages (Setpoint) programmed for Winding 1 and Winding 2.
Page 207 SYSTEM Phase Shift Compensation Phase Compensation Reference: The percent differential protection from the 889 relay uses the Delta winding as a reference to perform phase shift compensation. If the transformer has only “Wye” connected windings, the phase currents from the first Wye winding in the setup are used as a reference.
Page 208 (winding 1) in a delta. This compensates for the phase angle lag introduced in the delta side (winding 2). The 889 performs the phase angle correction internally based on the setpoint “Angle With Respect to W1” from the menu System > Transformer > Transformer Setup > “Winding 2”.
Page 209 NOTE The 889 supports all standard two-winding transformer types, and a variety of non- standard applications, where the selection of winding connection type and selected lagging angle with respect to Winding 1 are not described in the table of standard transformer types.
Page 210 The phase compensation angle φ is the angle by which a winding current is shifted comp with reference to the angle of the reference winding, and is calculated by the 889 for each winding as follows φ [w] = | φ[w ] –...
Page 211 ------ - I ------ - I -- - I -- - I -- - I -- - I -- - I -- - I -- - I -- - I -- - I 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–81...
Page 212 M[w2]- magnitude compensation factor for winding 2 (see previous sections) [w] , I [w], and I [w]- phase and zero sequence compensated winding phase currents (see earlier) The magnitude compensation factor for the reference winding is 1. 4–82 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 213 ))/CT = (0.9043*347)/1500 = 0.209 x CT load To check that the measured currents from both windings will sum-up to zero after applying magnitude compensation, one can perform the following simple calculations: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–83...
Page 214 The differential and restraint currents would be as follows: Differential currents: = 0 x CT = 0 x CT = 0 x CT Restraint currents: = 0.209 x CT = 0.209 x CT = 0.209 x CT 4–84 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 215 Transformer Types and Phase Shift compensation angles The figure below show standard two-winding transformer types, and the phase compensation angles which reference the phase reference winding used by the relay. Figure 4-22: Two-winding transformer connections 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–85...
Page 216: Breakers
Refer to the table from the section Output Relays for more detail on output relay availability with respect to their assignment. For the 889 with one breaker, if "Relay 2" is selected, Auxiliary Relay 2 is not available for NOTE: selection in any element. NOTE...
Page 217 PB LED: BREAKER OPENED FLEXLOGIC OPERANDS FlexLogic operand (BKR 52a state) BKR 1 Opened FlexLogic operand (BKR 52b status) LED: ALARM 30 ms FLEXLOGIC OPERANDS LATCH BKR 1 Unkwn State 892740A2.cdr RESET (command) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–87...
Page 218: Switches
Select an operand from the list of FlexLogic operands, which when asserted resets the Switch Discrepancy state. Please note that resetting the discrepancy alarm will work only after no discrepancy condition exists between the switch aux contacts 89a and 89b. 4–88 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 219 89b contact open Not Configured Table 4-21: Switch status with both contacts 89a and 89b programmed 89a Contact Status 89b Contact Status Disconnect Switch Status SW[X] Opened SW[X] Closed SW[X] Intermittent, SW[X] Discrepancy 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–89...
Page 220 SYSTEM CHAPTER 4: SETPOINTS Figure 4-25: Disconnect Switch State Detection logic diagram 4–90 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 221: Flexcurves
The following table details the 120 points as well as the characteristic for each of them, and a blank cell where the user can write the time value when the operation (for I > I pickup or the reset (for I < I ) is required. pickup 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–91...
Page 222 FlexCurves are customized by editing the operating time (ms) values at pre-defined per- unit current multiples. Note that the pickup multiples start at zero (implying the "reset time"), operating time below Pickup, and operating time above Pickup. 4–92 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 223: Inputs
Figure 4-26: Inputs Display Hierarchy Contact Inputs The 889 relay is equipped with a number of Contact Inputs, depending on the Order Code, which can be used to provide a variety of functions such as for circuit breaker control, external trips, blocking of protection elements, etc. Contact inputs accept wet and dry input signals.
Page 224 LOW-HIGH (marks no.1 and 2 in the figure below) and HIGH-LOW (marks no. 3 and 4 below) transitions. Figure 4-27: Contact Input Debouncing Mechanism and Time-stamping Sample Timing 4–94 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 225 The value is selected according to the following criteria: 17 for 24 V sources, 33 for 48 V sources, 84 for 110 to 125 V sources and 166 for 250 V sources. For internal wetting set the Voltage Threshold to 17V. FASTPATH: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–95...
Page 226: Virtual Inputs
The 52b contact is closed when the breaker is open and open when the breaker is closed. FASTPATH: Virtual Inputs The 889 relay is equipped with 64 Virtual Inputs that can be individually programmed to respond to input signals from the keypad or from communications protocols. This has the following advantages over Contact Inputs only: •...
Page 227 FUNCTION : Disabled=0 Enabled =1 Virtual Input 1 to ON =1 LATCH FlexLogic Operands Reset- Virtual Input 1 to OFF =0 VI 1 ON Dominant SETPOINTS VIRTUAL INPUT 1 TYPE: Latched 892705A1.cdr Self-Reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–97...
Page 228: Analog Inputs
4 to 20 mA for temperatures 0 to 250°C is connected to the analog input, then enter “0” for the MINIMUM VALUE. The relay then interprets 4 mA as representing 0°C. Intermediate values between the minimum and maximum are scaled linearly. 4–98 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 229 TRIP OUTPUT RELAY X For details see Common Setpoints. ALARM FUNCTION Range: Disabled, Alarm, Latched Alarm Default: Disabled The selection of Alarm or Latched Alarm setting enables the alarm function. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–99...
Page 230 This setting enables or disables the events of the Analog Input function. TARGETS Range: Disabled, Self-Reset, Latched Default: Latched The selection of the Self-Reset or Latched setting enables the targets of the Analog Input function. 4–100 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 231 CHAPTER 4: SETPOINTS INPUTS Figure 4-29: Analog Input Threshold Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–101...
Page 232: Remote Inputs
The REMOTE INPUT 1 Name setting allows the user to assign descriptive text to the remote input. The REMOTE INPUT 1 Events setting helps in enabling whether an event has to be generated whenever Remote input status is updated. 4–102 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 233: Outputs
Figure 4-30: Outputs Display Hierarchy Output Relays The 889 relay is equipped with a number of electromechanical output relays specified at the time of ordering. Each of the available modules for slot F provides 5 contact outputs the first two of which are designated as Trip and Close (Relay 1 “Trip”, Relay 2 “Close”). The “Trip”...
Page 234: Output Relay 1 (F1) Trip
(no control power). There are no user-programmable setpoints associated with this output relay. Output Relay 1 (F1) For the 889 relay ordered with one breaker, these setpoints are found at the first path Trip (TRIP); for the 889 ordered with two breakers, these setpoints are found at the second path (Aux Relay 1).
Page 235 (if not already activated by an operand driving this output relay) when control power is removed from the 889. Conversely a non-failsafe relay is de-energized in its normal non-activated state and will not change state when control power is removed from the 889 (if not already activated by a protection element).
Page 236 OUTPUTS CHAPTER 4: SETPOINTS Figure 4-31: Relay 1 “TRIP” logic diagram 4–106 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 237: Output Relay 2 (F4) Programmed As Close
NOTE For 889 relays with a single breaker, if Aux Relay 2 is selected for Breaker Close, the relay NOTE: name from the Output Relays menu changes to “Close”. If Aux Relay 2 is not selected, the name reverts to “Aux Relay 2”.
Page 238 OUTPUTS CHAPTER 4: SETPOINTS Figure 4-32: “Close” logic diagram 4–108 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 239: Auxiliary Output Relays
FlexLogic operand (trigger) under the setpoint “Aux Rly # Operate”. Changing the state of any of the Auxiliary Relays will be inhibited if the 889 relay is in “Not Ready” mode. NAME...
Page 240: Virtual Outputs
Relay ( Ready = 1) Virtual Outputs The 889 relay is equipped with 96 virtual outputs that may be assigned for use via FlexLogic. Virtual outputs not assigned for use are set to OFF (Logic 0). A name can be assigned to each virtual output. Any change of state to a virtual output can be logged as an event if programmed to do so.
Page 241: Analog Outputs
Each channel can be programmed to represent a FlexAnalog parameter available in the respective 8 Series relay. The range and steps is the same as the range of the FlexAnalog. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–111...
Page 242: Protection
PROTECTION CHAPTER 4: SETPOINTS Protection The 889 protection elements are organized in six (6) identical setpoint groups: Setpoint Group 1 to Setpoint Group 6. Figure 4-35: Protection Display Hierarchy Each Setpoint Group has the same protection functions, depending on the relay order code.
Page 243: Generator Elements
Power Elements • Directional Power (32) • Reactive Power (40Q) Frequency Elements • Underfrequency (81U) • Overfrequency (81O) • Frequency Rate of Change (81R) Generator Elements Figure 4-36: Generator Elements Display Hierarchy 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–113...
Page 244: Percent Differential
CTs have the same ratios but it is allowed for the ratios to be different. The maximum allowable ratio mismatch is 10:1. In the case of a mismatch, the 889 scales the currents to the primary of the CT with the higher primary value which is used as the CT reference for the percent differential element.
Page 245 CT mismatch error when operating at the maximum permitted current. This maximum error is generally in the range of 5 to 10% of CT rating. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–115...
Page 246 Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X Range: Do Not Operate, Operate Default: Do Not Operate EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Latched 4–116 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 247 In order to provide additional security against improper operations during these events, the 889 incorporates saturation detection logic. When saturation is detected the element makes an additional check on the angle between the terminal side CT and differential CT currents.
Page 248 That the above CT saturation (SAT) and phase direction (DIR) checking are applicable to NOTE: internal summation method only. If the Core balance method is selected, neither SAT nor DIR check is performed, the fixed values SAT=0 and DIR = 1 are used. NOTE 4–118 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 249 CHAPTER 4: SETPOINTS PROTECTION Figure 4-39: Percent Differential logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–119...
Page 250: Overall Percent Differential
2nd and 5th harmonics are as shown in the figure Filtering and calculation of differential and restraint currents. An 889 with the specific order code option, K-R1/R5 is required for the Overall Percentage NOTE: Differential. An 889 with the K-R1/R5 option supports 3-CT banks, 1 VT bank and an additional second breaker control.
Page 251 The restraint current is calculated as a maximum of the same internally compensated currents: Eq. 7 Refer to the Transformer Setup chapter for the winding currents magnitude and phase NOTE: shift compensations performed by the 889 relay. NOTE Figure 4-41: Differential/Restraint Characteristic for main transformer Operate Block...
Page 252 The accuracy of the Class C current transformer is defined in the IEEE standard C37.110 as not exceeding 10% for symmetrical current magnitudes of up to 20 times the rating for a standard burden resistance: 117Amps *10% = 11.7 Amps = > 11.7/200 = 0.0585 xCT(w1) 4–122 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 253 25kA, with an X/R ratio of 15. The CT voltage kneepoint from the saturation characteristic is 800 V, with winding resistance of 0.5 Ohms, Burden resistance of 2.19 Ohms, and Burden reactance of 0.01 Ohms. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–123...
Page 254 2 CT. Bringing this to the same scale with respect to winding 1 CT reference , i.e. multiplying by a magnitude of 0.4521, the Break 2 setting would be: Break 2 = 5 *0.4521 = 2.21 xCT (w1) 4–124 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 255 The selection of the Trip, or Configurable setting enables the Percent Phase Differential function. The trip output relays selected to trip each breaker will operate, if the Percent Differential protection operates and these trip outputs are selected in the Percent Differential menu as “Operate”. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–125...
Page 256 This differential current is a result of the transformer magnetizing current, CT inaccuracies, and transformer ratio that would change by the transformer on-load tap changer. When the tap changer feature is set properly, the 889 compensates the transformation ratio which impacts the differential protection automatically.
Page 257 2nd harmonic content from any phase is higher than the 2nd harmonic value entered in the setpoint “inrush inhibit level”. This method is also known as the “cross-blocking” method. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–127...
Page 258 Any, or all of the output relays can be selected to operate, upon percent differential operation. The 889 relay provides one instantaneous differential element per setpoint group. The Instantaneous differential protection is not biased protection and operates similar to the instantaneous overcurrent protection. Inputs to this protection are computed by the relay per-phase differential currents.
Page 259 Percent Differential function is set to “Trip”. These output relays will not be operational even if selected to operate if the Percent Differential function is set to “Configurable”. EVENTS Range: Disabled, Enabled Default: Disabled TARGETS Range: Disabled, Self-Reset, Latched Default: Latched 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–129...
Page 260 Ia Diff 5th Harm 5th Harm Diff B Ia Diff 5th Harm Ib Diff 5th Harm ≥ LEVEL Ia Diff 5th Harm 5th Harm Diff C Ic Diff 5th Harm ≥ LEVEL 894146.CDR 4–130 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 261: Generator Unbalance (46)
Generators have very specific limits where unbalanced current is concerned (Refer ANSI C50.13). The generator unbalance element in 889 has an inverse time overcurrent curve which is typically used for tripping and a definite time overcurrent curve typically used for alarm purposes to protect the generator rotor from overheating due to the presence of negative sequence currents.
Page 262 Default: 0.50 s This setting specifies a time delay for the alarm function. This is the minimum operate time of the alarm element. This is set to prevent nuisance alarms during system faults. 4–132 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 263 BLOCK Range: Off, Any FlexLogic operand Default: Off EVENT Range: Enabled, Disabled Default: Enabled TARGET Range: Self-reset, Latched, DIsabled Default: Self-reset Figure 4-45: Generator Unbalance Inverse TIme Curves 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–133...
Page 264 PROTECTION CHAPTER 4: SETPOINTS Figure 4-46: Generator Unbalance Logic Diagram 4–134 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 265: Inadvertent Energization (50/27)
Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X Range: Do Not Operate, Operate Default: Do Not Operate EVENTs Range: Enabled, Disabled Default: Enabled TARGETs Range: Self-reset, Latched, DIsabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–135...
Page 266 PROTECTION CHAPTER 4: SETPOINTS Figure 4-47: Inadvertent Energization Logic Diagram 4–136 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 267: Loss Of Excitation (40)
Although the setting values are in positive ohms, this protection function is looking into the generator, and hence the circle NOTE characteristics are shown inverted/reversed. Base impedance should be calculated on secondary side. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–137...
Page 268 CIRCLE 1 OFFSET Range: 0.1 to 300.0 ohms in steps of 0.1 ohms Default: 2.5 ohms This setting is the offset of the Circle 1 characteristic in ohms, referring to the CT/VT secondary (relay). 4–138 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 269 Range: 0.00 to 1.50 x VT in steps of 0.01 x VT Default: 0.70 x VT This setting specifies the pickup value for under-voltage supervision for one or both circles (if enabled). 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–139...
Page 270 PROTECTION CHAPTER 4: SETPOINTS BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, DIsabled Default: Latched 4–140 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 271 CHAPTER 4: SETPOINTS PROTECTION Figure 4-49: Loss of Excitation Logic Diagrams: (a) circle 1 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–141...
Page 272 PROTECTION CHAPTER 4: SETPOINTS Figure 4-50: Loss of Excitation Logic Diagrams: (b) circle 2 4–142 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 273: Third Harmonic Neutral Undervoltage (27Tn)
Default: 0.50 V This setting specifies the alarm pickup level for the magnitude of the 3 harmonic of the neutral voltage. Trip and alarm pickup levels are set in secondary voltage. NOTE: NOTE 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–143...
Page 274 Phase VT Secondary programmed under Setpoints > System > Voltage Sensing is the base unit. BLOCK Range: FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Latched 4–144 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 275 CHAPTER 4: SETPOINTS PROTECTION Figure 4-51: Third Harmonic Neutral UV logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–145...
Page 276: Third Harmonic Voltage Difference
(Metering > Generator > Stat Gnd 3rd Harm). TRIP RELAY Range: Do Not Operate, Operate Default: Do Not Operate 4–146 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 277 ), the neutral resistance is therefore equal to / 3, and at 3 x F , the neutral resistance is X .For analysis, assume that E = 10 V, R = 5Ω, and Xc = 5Ω. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–147...
Page 278 | ratio may vary from 0.4 to 0.85 under normal conditions. The pickup and supervision setpoints are determined by evaluating the operating quantities during a fault condition (refer to example 2 for details). 4–148 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 279 1.5 and the magnitude of the neutral and zero-sequence voltages |VN + V0| as:V_0= ((1- k)E_(3 Therefore, for faults at a fraction k = 0.15 from the neutral grounding point, we set the operating quantities as follows: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–149...
Page 280 PROTECTION CHAPTER 4: SETPOINTS Figure 4-53: Third Harmonic Voltage Difference logic diagram 4–150 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 281: Offline Overcurrent (50Ofl)
Since the breaker auxiliary contacts wired to the 889 Breaker Status Input may not operate NOTE: at exactly the same time as the main breaker contacts, the time delay should be coordinated with the difference of the operation times.
Page 282 PROTECTION CHAPTER 4: SETPOINTS BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS: Range: Enabled, Disabled Default: Disabled TARGETS: Range: Self-reset, Latched, Disabled Default: Self-reset 4–152 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 283 CHAPTER 4: SETPOINTS PROTECTION Figure 4-54: Offline Overcurrent Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–153...
Page 284: Overload Alarm
BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Latched 4–154 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 285 CHAPTER 4: SETPOINTS PROTECTION Figure 4-55: Generator Overload Alarm Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–155...
Page 286: Current Elements
When this variable indicates that the energy capacity has reached 100%, a Time Overcurrent element will operate. If less than 100% energy capacity is accumulated in this variable and the current falls below the dropout threshold of 97 to 98% of the Pickup value, 4–156 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 287 17.654 10.790 7.849 6.308 5.397 4.814 4.417 4.134 129.432 56.221 23.538 14.387 10.465 8.410 7.196 6.418 5.889 5.513 10.0 161.790 70.277 29.423 17.983 13.081 10.513 8.995 8.023 7.361 6.891 IEEE MODERATELY INVERSE 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–157...
Page 288 ANSI VERY INVERSE 1.567 0.663 0.268 0.171 0.130 0.108 0.094 0.085 0.078 0.073 3.134 1.325 0.537 0.341 0.260 0.216 0.189 0.170 0.156 0.146 6.268 2.650 1.074 0.682 0.520 0.432 0.378 0.340 0.312 0.291 4–158 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 289 Table 4-26: IEC (BS) INVERSE TIME CURVE CONSTANTS IEC (BS) CURVE SHAPE IEC Curve A (BS142) 0.140 0.020 IEC Curve B (BS142) 13.500 1.000 43.2 IEC Curve C (BS142) 80.000 2.000 58.2 IEC Short Inverse 0.050 0.040 0.500 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–159...
Page 290 The curves for the General Electric type IAC relay family are derived from the formula: Where: T = operate time (in seconds) TDM = Multiplier setting I = input current = Pickup Current setting pickup 4–160 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 291 A to E = constants = characteristic constant = reset time in seconds (assuming energy capacity is 100% and RESET is RESET “Timed”) Table 4-28: GE TYPE IAC INVERSE TIME CURVE CONSTANTS IAC CURVE SHAPE IAC Extremely Inverse 0.0040 0.6379 0.6200 1.7872...
Page 292 62.500 12.346 3.906 1.600 0.772 0.416 0.244 0.152 0.100 100.00 1975.31 625.00 123.46 39.06 16.00 7.72 4.16 2.44 1.52 1.00 600.00 11851.9 3750.0 740.7 234.4 96.00 46.3 25.0 14.65 9.14 6.00 FLEXCURVES 4–162 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 293 T = operate time (in seconds) TDM = Multiplier setting I = input current = Pickup Current setting pickup = reset time in seconds (assuming energy capacity is 100% and RESET is RESET “Timed”) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–163...
Page 294: Phase Time Overcurrent Protection (51P)
Protection (51P) The 889 relay TOC element can be configured with any of the IEEE, ANSI, IEC, and IAC standard inverse curves, any of the four FlexCurves, or set to definite time. The selection of Time Dial Multiplier (TDM) and minimum PKP, helps the user to fine tune the protection for accurate upstream/downstream coordination and during certain conditions, such as manual closing and Maintenance.
Page 295 BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–165...
Page 296 PROTECTION CHAPTER 4: SETPOINTS TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset Figure 4-58: Phase Time Overcurrent Protection logic diagram 4–166 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 297: Phase Instantaneous Overcurrent Protection (50P)
CHAPTER 4: SETPOINTS PROTECTION Phase Instantaneous The 889 IOC element consists of the equivalent of three separate instantaneous Overcurrent overcurrent relays (one per phase) - ANSI device 50P - all with identical characteristics. The settings of this function are applied to each of the three phases to produce Pickup and Trip Protection (50P) flags per phase.
Page 298 PROTECTION CHAPTER 4: SETPOINTS Figure 4-59: Phase Instantaneous Overcurrent logic diagram 4–168 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 299: Phase Directional Overcurrent Protection (67P)
CHAPTER 4: SETPOINTS PROTECTION Phase Directional The 889 Phase Directional Overcurrent protection elements (one for each of phases A, B, Overcurrent and C) determine the phase current flow direction for steady state and fault conditions and can be used to control the operation of the phase overcurrent elements by sending Protection (67P) directional bits to inputs of these elements.
Page 300 10 ms must therefore be added to all the instantaneous protection elements under the supervision of the Phase Directional element. If current reversal is a concern, a longer delay – in the order of 20 ms – is needed. 4–170 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 301 CHAPTER 4: SETPOINTS PROTECTION Figure 4-60: Phase Directional Overcurrent Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–171...
Page 302: Neutral Time Overcurrent Protection (51N)
PROTECTION CHAPTER 4: SETPOINTS Neutral Time The 889 computes the neutral current (In) using the following formula: Overcurrent |In|=|Ia+Ib+Ic| Protection (51N) The settings of this function are applied to the neutral current to produce Trip or Pickup flags. The Neutral TOC Pickup flag is asserted when the neutral current is above the PKP value.
Page 303 CHAPTER 4: SETPOINTS PROTECTION BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–173...
Page 304 PROTECTION CHAPTER 4: SETPOINTS Figure 4-61: Neutral Time Overcurrent Protection logic diagram 4–174 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 305: Neutral Instantaneous Overcurrent Protection (50N)
CHAPTER 4: SETPOINTS PROTECTION Neutral The 889 Neutral Instantaneous Overcurrent protection element computes the neutral Instantaneous current (In) using the following formula: Overcurrent |In| = |Ia + Ib + Ic| Protection (50N) The element essentially responds to the magnitude of a neutral current fundamental frequency phasor calculated from the phase currents.
Page 306 CHAPTER 4: SETPOINTS BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 4–176 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 307 CHAPTER 4: SETPOINTS PROTECTION Figure 4-62: Neutral Instantaneous Overcurrent Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–177...
Page 308: Neutral Directional Overcurrent Protection (67N)
PROTECTION CHAPTER 4: SETPOINTS Neutral Directional The 889 Neutral Directional Overcurrent protection element provides both forward and Overcurrent reverse fault direction indications: the Ntrl Dir OC FWD and Ntrl Dir OC REV, respectively. The output operands are asserted if the magnitude of the operating current is above a...
Page 309 Region 3I_0 line ECA line -ECA line -3I_0 line REV LA FWD LA line line 3V_0 line 827805A1.CDR Path: Setpoints > Protection > Group 1(6) > Current > Neutral Directional OC 1(X) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–179...
Page 310 Range: 0.000 to 0.500 in steps of 0.001 Default: 0.063 This setting controls the amount of the positive-sequence restraint. Set to zero to remove the restraint. Set higher if large system unbalances or poor CT performance are expected. 4–180 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 311 When selecting this setting it must be kept in mind that the design uses a ‘positive-sequence restraint’ technique for the “Calculated 3I0” mode of operation. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–181...
Page 312 PROTECTION CHAPTER 4: SETPOINTS Figure 4-64: Neutral Directional Overcurrent Protection logic diagram 4–182 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 313: Ground Time Overcurrent Protection (51G)
CHAPTER 4: SETPOINTS PROTECTION Ground Time The 889 is equipped with the Ground Time Overcurrent protection element. The settings of Overcurrent this function are applied to the ground input current to produce Trip or Pickup flags. The Ground TOC Pickup flag is asserted when the ground current is above the PKP value. The...
Page 314 PROTECTION CHAPTER 4: SETPOINTS TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 4–184 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 315 CHAPTER 4: SETPOINTS PROTECTION Figure 4-65: Ground Time Overcurrent Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–185...
Page 316: Ground Instantaneous Overcurrent Protection (50G)
PROTECTION CHAPTER 4: SETPOINTS Ground Instantaneous The 889 relay is equipped with the Ground Instantaneous Overcurrent protection element. Overcurrent The settings of this function are applied to the measured Ground current for producing Pickup and Trip flags. The Ground IOC Pickup flag is asserted when the Ground current is Protection (50G) above the PKP value.
Page 317: Ground Directional Overcurrent Protection (67G)
CHAPTER 4: SETPOINTS PROTECTION Ground Directional The 889 Ground Directional Overcurrent protection element. It provides both forward and Overcurrent reverse fault direction indications: the Gnd Dir OC FWD and Gnd Dir OC REV operands, respectively. The output operands are asserted if the magnitude of the operating current is...
Page 318 If Voltage polarizing mode is selected, the element uses the zero-sequence voltage angle for polarization. The user can select either the zero-sequence voltage V_0, calculated from the phase voltages, or the zero-sequence voltage supplied externally as the auxiliary voltage V_X. 4–188 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 319 NOTE example, a pickup setting 1.000 x CT translates to the pickup of the element when CT primary current exceeds 1.000 Ampere (i.e. 0.5 mA injected into the relay from CT secondary.) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–189...
Page 320 This setting defines the Pickup level for the overcurrent unit of the element in the reverse direction. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 4–190 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 321 CHAPTER 4: SETPOINTS PROTECTION Figure 4-67: Ground Directional Overcurrent Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–191...
Page 322: Sensitive Ground Time Overcurrent Protection (51Sg)
PROTECTION CHAPTER 4: SETPOINTS Sensitive Ground Time The 889 is equipped with the Sensitive Ground Time Overcurrent protection element. The Overcurrent settings of this function are applied to the Sensitive Ground input current to produce Trip or Pickup flags. The Sensitive Ground TOC Pickup flag is asserted when the Sensitive Ground Protection (51SG) current is above the PKP value.
Page 323 The selection of the Enabled setting enables the events of Sensitive Ground TOC function. TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset The selection of Self-reset or Latched settings enables the targets of the Sensitive Ground TOC function. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–193...
Page 324 PROTECTION CHAPTER 4: SETPOINTS Figure 4-68: Sensitive Ground Time Overcurrent Protection logic diagram 4–194 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 325: Sensitive Ground Instantaneous Overcurrent Protection (50Sg)
CHAPTER 4: SETPOINTS PROTECTION Sensitive Ground The 889 relay is equipped with Sensitive Ground Instantaneous Overcurrent protection Instantaneous element. The settings of this function are applied to the measured Sensitive Ground current for producing Pickup and Trip flags. The Sensitive Ground IOC Pickup flag is Overcurrent asserted when the Sensitive Ground current is above the PKP value.
Page 326 PROTECTION CHAPTER 4: SETPOINTS TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 4–196 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 327 CHAPTER 4: SETPOINTS PROTECTION Figure 4-69: Sensitive Ground Instantaneous Overcurrent Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–197...
Page 328: Sensitive Ground Directional Overcurrent Protection (67Sg)
PROTECTION CHAPTER 4: SETPOINTS Sensitive Ground The 889 relay is equipped with the Sensitive Ground Directional Overcurrent protection Directional element. It provides both forward and reverse fault direction indications: the S.Gnd Dir OC FWD and S.Gnd Dir OC REV operands, respectively. The output operands are asserted if the...
Page 329 If Voltage polarizing mode is selected, the element uses the zero-sequence voltage angle for polarization. The user can select either the zero-sequence voltage V_0, calculated from the phase voltages, or the zero-sequence voltage supplied externally as the auxiliary voltage V_X. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–199...
Page 330 REVERSE LIMIT ANGLE Range: 40° to 90° in steps of 1° Default: 90° This setting defines a symmetrical (in both directions from the ECA) limit angle for the reverse direction. 4–200 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 331 This setting defines the Pickup level for the overcurrent unit of the element in the reverse direction. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–201...
Page 332 PROTECTION CHAPTER 4: SETPOINTS Figure 4-71: Sensitive Ground Directional Overcurrent Protection logic diagram 4–202 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 333: Restricted Ground (Earth) Fault (87G)
CHAPTER 4: SETPOINTS PROTECTION Restricted Ground The 889 relay is equipped with the Restricted Ground (Earth) Fault (RGF) element. (Earth) Fault (87G) The Restricted Ground (Earth) Fault (RGF) protection provides ground fault detection for low-magnitude ground fault currents primarily for ground faults close to the neutral point of the wye connected winding with low-impedance grounding.
Page 334 PROTECTION CHAPTER 4: SETPOINTS 889 implementation of the Restricted Ground (Earth) Fault protection is a low impedance current differential scheme. The 889 calculates the magnitude of the ground differential current as an absolute value from the vector summation of the computed residual current, and the measured ground current, and applies a restraining current defined as the maximum measured line current (Imax) to produce a percent slope value.
Page 335 CURRENT SUPERVISION is set to “Enabled”. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–205...
Page 336 @ 30% load the slope setting would be: (36 / 208 A)*100 = 17% The ground current supervision feature and/or the RGF 1 Pickup time delay can be used if CT saturation due to heavy external fault, is a concern. 4–206 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 337 CHAPTER 4: SETPOINTS PROTECTION Figure 4-75: Restricted Ground (Earth) Fault Protection Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–207...
Page 338: Negative Sequence Instantaneous Overcurrent Protection (50_2)
The Negative Sequence Instantaneous Overcurrent element may be used to determine and clear unbalance in the system. The input for computing negative Overcurrent sequence current is the fundamental phasor value. The 889 computes the negative Protection (50_2) sequence current magnitude |I_2| using the following formula: |I_2|=1/3*|Ia+Ib*(1∠240º)+Ic*(1∠120 º)|...
Page 339 CHAPTER 4: SETPOINTS PROTECTION OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–209...
Page 340 PROTECTION CHAPTER 4: SETPOINTS Figure 4-76: Negative Sequence Instantaneous Overcurrent logic diagram 4–210 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 341: Negative Sequence Directional Overcurrent Protection (67_2)
CHAPTER 4: SETPOINTS PROTECTION Negative Sequence The 889 relay is equipped with the Negative Sequence Directional Overcurrent protection Directional element. The element provides both forward and reverse fault direction indications through its output operands Neg Seq Dir OC FWD and Neg Seq Dir OC REV, respectively.
Page 342 Range: 0.000 to 0.500 in steps of 0.001 Default: 0.063 The setting controls the positive-sequence restraint. Set to 0.125. Set to zero to remove the restraint. Set higher if large system unbalances or poor CT performance are expected. 4–212 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 343 When selecting the setting it must be kept in mind that the design uses a positive- sequence restraint technique. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–213...
Page 344 PROTECTION CHAPTER 4: SETPOINTS Figure 4-78: Negative Sequence Directional Overcurrent Protection logic diagram 4–214 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 345: Load Encroachment
CHAPTER 4: SETPOINTS PROTECTION Load Encroachment The 889 relay is equipped with the Load Encroachment element. The Load Encroachment element responds to the positive-sequence voltage and current and applies a characteristic shown in the figure below: Figure 4-79: Load Encroachment Characteristic...
Page 346 Common Setpoints. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Disabled As the Load Encroachment function operates during normal conditions it is recommended FASTPATH: that targets be disabled. 4–216 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 347 CHAPTER 4: SETPOINTS PROTECTION Figure 4-80: Load Encroachment logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–217...
Page 348: Voltage Elements
Auxiliary OV 2 Control Group 5 Neutral OV FlexLogic Group 6 Neg Seq OV V Testing Volts per Hertz 1 Volts per Hertz 2 Level 1 Level 2 Level 3 Level 4 Level 5 4–218 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 349: Phase Reversal (47)
CHAPTER 4: SETPOINTS PROTECTION Phase Reversal (47) The 889 can detect the phase rotation of the three phase voltages. When all three Phase- to-Phase Voltages (V and V ) are greater than 50% of VT, if the phase rotation of the...
Page 350 PROTECTION CHAPTER 4: SETPOINTS Figure 4-82: Phase Reversal logic diagram 4–220 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 351: Undervoltage Curves
1.1 x PKP (not at 0.82 x PKP). On the other hand, when the measured voltage is 1 x VT, the ratio is 0.9/1 = 0.9, therefore, in the FlexCurve, the corresponding Reset time entry is at 0.9 x PKP. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–221...
Page 352: Phase Undervoltage Protection (27P)
PROTECTION CHAPTER 4: SETPOINTS Phase Undervoltage The 889 relay is equipped with the Phase Undervoltage (UV) element. The Phase Protection (27P) Undervoltage element may be used to protect voltage sensitive loads and system components against sustained undervoltage conditions. This element may be used for permissive functions, initiation of the source transfer schemes, and similar functions.
Page 353 Undervoltage Curves. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–223...
Page 354 PROTECTION CHAPTER 4: SETPOINTS Figure 4-84: Phase Undervoltage Protection logic diagram 4–224 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 355: Auxiliary Undervoltage (27X)
CHAPTER 4: SETPOINTS PROTECTION Auxiliary The 889 relay provides two identical Auxiliary Undervoltage (UV) elements per protection Undervoltage (27X) group, or a total of 12 elements. Each Auxiliary Undervoltage element may be used to protect voltage sensitive loads and system components against sustained undervoltage conditions.
Page 356 CHAPTER 4: SETPOINTS BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–226 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 357 CHAPTER 4: SETPOINTS PROTECTION Figure 4-85: Auxiliary Undervoltage Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–227...
Page 358: Phase Overvoltage Protection (59P)
PROTECTION CHAPTER 4: SETPOINTS Phase Overvoltage The 889 relay provides two identical Phase Overvoltage (OV) elements per protection Protection (59P) group, or a total of 12 elements. Each Phase Overvoltage element may be used to protect voltage sensitive loads and system components against sustained overvoltage conditions.
Page 359 CHAPTER 4: SETPOINTS PROTECTION OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–229...
Page 360 PROTECTION CHAPTER 4: SETPOINTS Figure 4-86: Phase Overvoltage logic diagram 4–230 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 361: Auxiliary Overvoltage Protection (59X)
CHAPTER 4: SETPOINTS PROTECTION Auxiliary Overvoltage The 889 relay provides one Auxiliary Overvoltage (OV) element per protection group, or a Protection (59X) total of 6 elements. Each Auxiliary OV element is used to protect voltage sensitive loads and system components against sustained overvoltage conditions. This element can be used for monitoring zero-sequence voltage (from an "open corner delta"...
Page 362 The reset rate is a linear reset time from the threshold of trip. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–232 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 363 CHAPTER 4: SETPOINTS PROTECTION Figure 4-88: Auxiliary Overvoltage Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–233...
Page 364: Neutral Overvoltage Protection (59N)
PROTECTION CHAPTER 4: SETPOINTS Neutral Overvoltage The 889 relay provides one Neutral Overvoltage (also called Neutral Displacement) (Neutral Protection (59N) OV) element per protection group. The Neutral Overvoltage element can be used to detect asymmetrical system voltage conditions caused by a ground fault or the loss of one or two phases of the source. The element responds to the system neutral voltage (3V_0), calculated from the phase voltages.
Page 365 CHAPTER 4: SETPOINTS PROTECTION BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–235...
Page 366 PROTECTION CHAPTER 4: SETPOINTS Figure 4-89: Neutral Overvoltage Protection logic diagram 4–236 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 367: Negative Sequence Overvoltage Protection (59_2)
CHAPTER 4: SETPOINTS PROTECTION Negative Sequence The 889 relay provides one Negative Sequence Overvoltage (Negative Sequence OV 1) Overvoltage element per protection group, or a total of 6 elements. Protection (59_2) The Negative Sequence Overvoltage element can be used to detect an asymmetrical system voltage condition, loss of one or two phases of the source, or reversed phase sequence of voltages.
Page 368 PROTECTION CHAPTER 4: SETPOINTS Figure 4-90: Negative Sequence Overvoltage Protection logic diagram 4–238 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 369: Volts Per Hertz (24)
This setting specifies the input voltage used to calculate the per-unit volts-per-Hertz (V/ Hz). If three phase voltages are used then set the AC Inputs to “Ph VT Bnk1-J2”. To use the V/Hz element with auxiliary voltage, set AC Inputs to “Aux VT Bnk1-J2”. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–239...
Page 370 TDM= Time Delay Multiplier (delay in seconds) V = fundamental RMS value of voltage (pu) F = frequency of voltage signal (pu) Pickup = volts-per-hertz pickup setpoint (pu) The volts/hertz inverse A curves are shown below. 4–240 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 371 TDM = Time Delay Multiplier (delay in seconds) V = fundamental RMS value of voltage (pu) F = frequency of voltage signal (pu) Pickup = volts-per-hertz pickup setpoint (pu) The Volts/Hertz inverse B curves are shown below. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–241...
Page 372 V = fundamental RMS value of voltage (pu) F = frequency of voltage signal (pu) Pickup = volts-per-hertz pickup setpoint (pu) The Volts/Hertz Inverse C curves are shown below. Figure 4-93: Volts-Per-Hertz Curves for Inverse Curve C 4–242 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 373 The Volts per Hertz can be blocked by any asserted FlexLogic operand. OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–243...
Page 374 PROTECTION CHAPTER 4: SETPOINTS Figure 4-94: Volts per Hertz logic diagram 4–244 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 375: Impedance Elements
SEAL-IN DELAY. If the "MHO EXIT" trip mode is selected, the element waits until the impedance locus leaves the mho characteristic, and then the OOS OP operand is set and sealed-in. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–245...
Page 376 120°. Then, 10 degrees are normally added in order to increase relay operation security, δ = δ +10. Determine the blinder distance, d, from the following equation: Set RIGHT BLINDER and LEFT BLINDER to d. 4–246 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 377 Range: 0.10 to 500.00 ohms in steps of 0.01 ohms Default: 2.00 ohms This setting specifies the reverse reach of the mho characteristic. The reach impedance is entered in secondary ohms. The reach impedance angle is fixed to -90 degrees. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–247...
Page 378 The sealing-in is crucial to the MHO EXIT trip mode, as the original trip signal is a very short pulse occurring when the impedance locus leaves the mho characteristic after the out-of-step sequence is completed. 4–248 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 379 Range: Off, Any operand from the list of FlexLogic operands Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Latched 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–249...
Page 380 PROTECTION CHAPTER 4: SETPOINTS Figure 4-97: Out-of-step Protection Logic Diagram 4–250 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 381: Power Elements
Power Elements Figure 4-98: Power Elements Display Hierarchy Directional Power (32) The 889 relay provides two identical Directional Power elements per protection group; a total of 12 elements. The Directional Power element responds to three-phase directional power and is designed for reverse power (32REV) and low forward power (32FWD) applications for synchronous machines or interconnections involving co-generation.
Page 382 For example, section (a) in the figure below shows settings for reverse power, while section (b) shows settings for low forward power applications. 4–252 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 383 CHAPTER 4: SETPOINTS PROTECTION Figure 4-100: Sample applications of the Directional Power element 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–253...
Page 384 RCA = 180° and SMIN = 0.017 x Rated. The element drops out if the magnitude of the positive-sequence current becomes virtually zero, that is, it drops below the cutoff level. 4–254 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 385 2 for tripping. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–255...
Page 386 PROTECTION CHAPTER 4: SETPOINTS Figure 4-101: Directional Power logic diagram 4–256 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 387: Reactive Power (40Q)
Range: 0.02 to 2.00 x Rated in steps of 0.01 Default: 0.85 x Rated This setting is typically set at a level less than the Positive var Trip Pickup for the alarm function. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–257...
Page 388 A value of zero for the block time indicates that the reactive power protection is active as soon as the generator comes online. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Disabled, Enabled Default: Disabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–258 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 389 CHAPTER 4: SETPOINTS PROTECTION Figure 4-102: Reactive Power Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–259...
Page 390: Frequency Elements
Figure 4-103: Frequency Elements Display Hierarchy Underfrequency (81U) The 889 can be used as the primary detecting relay in automatic load-shedding schemes based on underfrequency. The need for such a relay arises if during a system disturbance, an area becomes electrically isolated from the main system and suffers a generation deficiency due to the loss of either transmission or generation facilities.
Page 391 A setting of zero is suspend current supervision. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–261...
Page 392 PROTECTION CHAPTER 4: SETPOINTS Figure 4-104: Underfrequency Protection logic diagram 4–262 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 393: Overfrequency (81O)
CHAPTER 4: SETPOINTS PROTECTION Overfrequency (81O) The 889 relay provides two identical Overfrequency (OVERFREQ) elements per protection group, or a total of 12 elements. A significant overfrequency condition, likely caused by a breaker opening and disconnecting load from a particular generation location, can be detected and used to quickly ramp the turbine speed back to normal.
Page 394 BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–264 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 395 CHAPTER 4: SETPOINTS PROTECTION Figure 4-105: Overfrequency Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–265...
Page 396: Frequency Rate Of Change (81R)
Configurable setting is selected and the element operates TREND Range: Decreasing, Increasing, Bi-directional Default: Decreasing The setting allows configuring of the element to respond to increasing or decreasing frequency, or to a frequency change in either direction. 4–266 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 397 Typical application includes load shedding. Set the Pickup threshold to zero if no overcurrent supervision is required. The setting of zero suspends the current supervision. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–267...
Page 398 When set to “Latched,” the target message will remain visible after the element output returns to logic 0 until a RESET command is received by the relay. 4–268 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 399 CHAPTER 4: SETPOINTS PROTECTION Figure 4-106: Frequency Rate-of-Change Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–269...
Page 400: Monitoring
Real Power Pulsed Outputs Speed Protection Data Capture Reactive Power RTD Temperature Data Capture Digital Counters Apparent Power Loss of Comms Data Capture Level 1 Level 2 Level 3 Level 4 Level 5 4–270 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 401: Generator
MONITORING Generator Running Hours The 889 can calculate/accumulate generator running hours, which may be of interest for periodic maintenance. Since running hour calculations do not rely on external/special input (Tachometer), it basically utilizes generator terminal voltage and frequency measurement, and hence, Running hours is always available (as a generator metering value).
Page 402 MONITORING CHAPTER 4: SETPOINTS Figure 4-108: Running Hours Logic Diagram 4–272 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 403: Frequency Oob Accumulation (81A)
Path: Setpoints > Monitoring > Generator > Frequency OOB Accumulation > Accum 1(7) FUNCTION Range: Disabled, ALarm, Latched Alarm, Configurable Default: Disabled This setting enables and disables a specific frequency band accumulator. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–273...
Page 404 The TIME PRESET value must be higher than the current accumulator value in order to NOTE: Preset. NOTE OUTPUT RELAY Range: Do Not Operate, Operate Default: Do Not Operate 4–274 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 405 CHAPTER 4: SETPOINTS MONITORING Figure 4-109: Frequency OOB Accumulation (with Accumulator 1) Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–275...
Page 406: Thermal Overload Protection (49Tol)
For these conditions, it is recommended that the FlexCurves be used. FlexCurves allows the user to program selected operate (t ) and reset time (t ) for pre-determined current levels. Reset 4–276 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 407 When current is less than the dropout level, |I < 0.97 x k x Ib|, the element starts decreasing the thermal capacity (EQN 6): where: • = thermal capacity used at index n • = thermal capacity used at index n - 1 • ∆t = power cycle duration 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–277...
Page 408 Default: CT Bank 1-J1 This setting provides the selection for the 3-Phase CT bank inputs. This setting allows applying this element either on the terminal side or neutral side of the Generator. 4–278 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 409 IEC curves. THERMAL RESET Range: Off, Any FlexLogic operand Default: Off In case of emergency, the thermal memory and thermal OP output operand can be reset using the Thermal Reset operand. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–279...
Page 410 Range: Do Not Operate, Operate Default: Do Not Operate Any assignable output relay can be selected to operate upon Thermal Protection operation. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–280 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 411 CHAPTER 4: SETPOINTS MONITORING Figure 4-111: Thermal Model Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–281...
Page 412: Breaker
CHAPTER 4: SETPOINTS Breaker Trip and Close Circuit The 889 relay provides Trip and Close Circuit Monitoring elements. Monitoring The first and second Form A relay outputs on slot “F” include a circuit to monitor the DC voltage across the output contact when it is open. To do that, an external jumper is wired between the terminals “FA_1 COM”...
Page 413 FA_2 FA_2 OPT/V contact Close Coil DC - Figure 4-114: Trip Coil Circuit with Monitoring DC + Output Relay 1 (TRIP) FA_1 External FA_1 Jumper FA_1 OPT/V contact Trip Coil DC - 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–283...
Page 414 52a in the trip circuit (across 52b contact(s) for Close coil). With such connections, the trickle current is maintained by the resistor. For these applications the setting for the Bypass Breaker Status should be set to ENABLED. 4–284 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 415 Table 4-35: Value of Resistor “R” Power Supply (V DC) Resistance (Ohms) Power (Watts) 1000 10000 25000 25000 50000 Trip and Close Contacts must be considered unsafe to touch when the relay is DANGER: energized. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–285...
Page 416 (not closed) open. BLOCK: Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS: Range: Disabled, Enabled Default: Enabled TARGETS: Default: Self-reset Range: Disabled, Self-reset, Latched 4–286 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 417 CHAPTER 4: SETPOINTS MONITORING Figure 4-117: Trip Circuit Monitoring Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–287...
Page 418 OUTPUT RELAY X Range: Do Not Operate, Operate Default: Do Not Operate BLOCK: Default: Off Range: Off, Any FlexLogic operand EVENTS: Range: Disabled, Enabled Default: Enabled TARGETS: Range: Disabled, Self-reset, Latched Default: Self-reset 4–288 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 419 CHAPTER 4: SETPOINTS MONITORING Figure 4-118: Close Circuit Monitoring Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–289...
Page 420: Breaker Arcing Current
MONITORING CHAPTER 4: SETPOINTS Breaker Arcing The 889 relay provides one Breaker Arcing Current element.This element calculates an Current estimate of the per-phase wear on the breaker contacts by measuring and integrating the current squared passing through the breaker contacts as an arc. These per-phase values are added to accumulated totals for each phase and compared to a programmed threshold value.
Page 421 The setpoint specifies the threshold value (kA2-cycle) above which the output operand is set. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAYS X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–291...
Page 422 MONITORING CHAPTER 4: SETPOINTS Figure 4-120: Breaker Arcing Current logic diagram 4–292 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 423: Breaker Health
MONITORING Breaker Health The 889 relay provides breaker health information by monitoring and analyzing the operation count, arcing energy of breaking current, arcing time, tripping time, closing time and spring charging time if applicable. The breaker health status depends on many factors, such as permissible operation number, magnitude of breaking current, mechanical wear and contact wear.
Page 424 Range: 0.000 to 6000.000 s in steps of 0.001 s Default: 15.000 s This setting sets the Pickup level of the Spring Charge time. The Spring Charge time is measured from the pulse duration of the SPRING CHARGE STATUS. 4–294 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 425 LED is lit and one operand is asserted. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–295...
Page 426 MONITORING CHAPTER 4: SETPOINTS Figure 4-121: Breaker Health and Operation logic diagram 4–296 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 427: Functions
Functions Power Factor The 889 is applied on a synchronous machine, it is desirable not to trip or alarm on power factor until the field has been applied. Therefore, this feature can be blocked until the machine comes up to speed and the field is applied. From that point forward, the power factor trip and alarm elements will be active.
Page 428 Default: Disabled This setting enables the Power Factor Trip functionality. TRIP LEAD LEVEL Range: 0.05 to 1.00 in steps of 0.01 Default: 1.00 Lag This setting specifies the Power Factor Lead Trip level. 4–298 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 429 Range: 0.00 to 600.00 s in steps of 0.01 s Default: 1.00 s The setting specifies a dropout time delay for the alarm function. ALARM OUTPUT RELAY X For details see Common Setpoints. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–299...
Page 430 The element is blocked when the selected operand is asserted. EVENTS Range: Enabled, Disabled Default: Enabled The selection of the Enabled setting enables the events of the function. TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–300 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 431 CHAPTER 4: SETPOINTS MONITORING Figure 4-124: Power Factor logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–301...
Page 432: Demand
This setpoint sets the Current Demand Pickup level. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–302 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 433 CHAPTER 4: SETPOINTS MONITORING Figure 4-125: Current Demand logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–303...
Page 434 Pickup comparison. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAYS X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–304 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 435 CHAPTER 4: SETPOINTS MONITORING Figure 4-126: Real Power Demand logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–305...
Page 436 Pickup comparison. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–306 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 437 CHAPTER 4: SETPOINTS MONITORING Figure 4-127: Reactive Power Demand logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–307...
Page 438 The setting sets the Apparent Power Demand Pickup level. BLOCK Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–308 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 439 CHAPTER 4: SETPOINTS MONITORING Figure 4-128: Apparent Power Demand logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–309...
Page 440: Pulsed Outputs
This feature is programmed such that no more than one pulse per two seconds is required. The 889 is not a revenue class meter and cannot be used for billing purposes. Energy quantities are displayed in MWh and MVarh, with resolutions of 1 kWh and 1 kVarh respectively.
Page 441 CHAPTER 4: SETPOINTS MONITORING EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-Reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–311...
Page 442 MONITORING CHAPTER 4: SETPOINTS Figure 4-129: Pulsed Outputs logic diagram 4–312 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 443: Digital Counters
MONITORING Digital Counters The 889 relay provides sixteen identical Digital Counters. A Digital Counter counts the number of state transitions from logic 0 to logic 1. The Digital Counters are numbered from 1 to 16. The counters are used to count operations such as the Pickups of an element, the changes of state of an external contact (e.g.
Page 444 The counter accumulated value can be reset to zero either by asserting an operand NOTE: programmed under Reset from the counter menu, executing the clear Digital Counters command under the Records/Clear menu, or by setting the function of the counter to NOTE “Disabled”. 4–314 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 445 CHAPTER 4: SETPOINTS MONITORING Figure 4-130: Digital Counter logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–315...
Page 446: Harmonic Detection
If the fundamental magnitude on any of the three phases goes below the current cut-off level, the selected harmonic current from that phase is dropped (zeroed) from the equation for averaging, and the divider is decreased from 3 to 2. The same happens if 4–316 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 447 A similar adaptive average algorithm is applied to calculate the average of operation current magnitude. OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Latched 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–317...
Page 448 MONITORING CHAPTER 4: SETPOINTS Figure 4-131: Harmonic Detection logic diagram 4–318 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 449: Speed
MONITORING Speed The 889 is capable of measuring the generator speed. Any of the input contacts can be used to read the pulses from the input source. The source of the pulses can be an inductive proximity probe or Hall Effect gear tooth sensor. The probe could be powered from a power supply with a maximum of 48 VDC.
Page 450 24V supply must be considered. NOTE RATED SPEED Range: 100 to 7200 RPM in steps of 1 Default: 3600 RPM RPM defines the rated speed of the motor. RPM defines the rated speed of the generator. 4–320 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 451 This setting specifies a time delay for the Alarm function. ALARM OUTPUT RELAY X For details see Common Setpoints. BLOCK Range: Off, Any FlexLogic operand Default: Off The Speed protection can be blocked by any asserted FlexLogic operand. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–321...
Page 452 MONITORING CHAPTER 4: SETPOINTS EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-Reset, Latched Default: Latched 4–322 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 453 CHAPTER 4: SETPOINTS MONITORING Figure 4-133: Speed Protection logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–323...
Page 454: Rtd Temperature
These channels are intended to be connected to any of the RTD types in common use. Depending on the order code, the 889 can be furnished with up to two optional RTD cards. Each card has six RTD input channels. Only slots “B” and “C” can accept RTD cards. When two RTD cards are used, then inputs on the card inserted into slot “B”...
Page 455 RTD Protection NOTE The 889 relay can monitor up to 13 RTDs, each of which can be configured to have a trip temperature and an alarm temperature. The RTD protection setpoints can be seen only if an LVIO card or one or two RTD modules are installed and validated.
Page 456 Range: 1°C to 250°C in steps of 1°C (33°F to 482°F in steps of 2°F) Default: 130°C (266°F) ALARM PICKUP DELAY Range: 0 s to 600 s in steps of 1 s Default: 2 s 4–326 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 457 Default: 0 s ALARM OUTPUT RELAY X For details see Common Setpoints. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Latched 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–327...
Page 458 MONITORING CHAPTER 4: SETPOINTS Figure 4-135: RTD Protection logic diagram 4–328 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 459: Rtd Trouble
Range: Disabled, Alarm, Latched Alarm Default: Disabled ALARM OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Latched Figure 4-136: RTD Trouble logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–329...
Page 460: Loss Of Communications
Default: 2 s OUTPUT RELAY X For details see Common Setpoints. BLOCK Range: Off, Any FlexLogic operand Default: Off EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Latched 4–330 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 461 CHAPTER 4: SETPOINTS MONITORING Figure 4-137: Loss of Communications logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–331...
Page 462: Control
Outputs Virtual Input Control Protection Trip Bus Monitoring Breaker Failure Control Arc Flash FlexLogic Synchrocheck Testing VT Fuse Failure 1 VT Fuse Failure 2 Level 1 Level 2 Level 3 Level 4 4–332 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 463: Setpoint Group
CONTROL Setpoint Group The 889 relay provides six setpoint groups. All setpoints contained under the protection setpoints are reproduced in six groups, identified as Setpoint Groups 1, 2, 3, 4, 5 and 6. These multiple setpoints provide the capability for both automatic and manual switching to protection settings for different operating situations.
Page 464 CONTROL CHAPTER 4: SETPOINTS Figure 4-139: Setpoint Groups logic diagram 4–334 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 465: Generator
OUTPUT RELAY Range: Do Not Operate, Operate Default: Do Not Operate BLOCK Range: Off, Any FlexLogic operand Default: Off EVENT: Range: Enabled, Disabled Default: Enabled TARGET: Range: Self-reset, Latched, Disabled Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–335...
Page 466 CONTROL CHAPTER 4: SETPOINTS Figure 4-140: Field Breaker Discrepancy Logic Diagram 4–336 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 467: Sequential Shutdown
Range: 0.20 to 180.00 s in steps of 0.01 s Default: 10.00 s OUTPUT DELAY Range: Do Not Operate, Operate Default: Do Not Operate BLOCK Range: Off, Any FlexLogic operand Default: Off EVENT: Range: Enabled, Disabled Default: Disabled 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–337...
Page 468 CONTROL CHAPTER 4: SETPOINTS TARGET: Range: Self-reset, Latched, Disabled Default: Self-reset 4–338 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 469 CHAPTER 4: SETPOINTS CONTROL Figure 4-141: Sequential Shutdown Logic Diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–339...
Page 470: Local Control Mode (Breakers And Switches)
“Local Mode” input de-asserted), or LOCAL MODE (Local Mode setpoint asserted). Breaker Mode defaults The default value of the breaker control mode for the 889 ordered with one breaker is set to Remote (Local Mode set to Off or the selected LOCAL MODE input de-asserted). In this mode, all programmed setpoints from the respective menus for Breaker Control and Switch Control (see the respective logic) are active.
Page 471 If no operation is detected, the selection is removed, and the user must press the select PB again to enable the selection. The local mode breaker selection and operation is only active if the user has proper level security access. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–341...
Page 472 PB “Block” will block the closing command, and vice versa (see figures: Local Control for breakers/Local Control for switches). When the block is active, the letter “B” appears in the SLD next to the controlled component 4–342 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 473 SLD screens. The Pushbutton “Tag” logic diagram shows the tagging logic diagram for a switch. The logic applies to one breaker or switch at the time in the single line diagram. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–343...
Page 474 The Local Mode control allows programming of separate pair of PBs for Open and Close FASTPATH: commands to breakers and for Open and Close commands to switches. If desired, one pair of pushbuttons can be programmed for Open and Close commands to both breakers and switches. 4–344 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 475 CHAPTER 4: SETPOINTS CONTROL Figure 4-146: Local Control for breakers 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–345...
Page 476 CONTROL CHAPTER 4: SETPOINTS Figure 4-147: Local Control for Switches 4–346 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 477 Range: Off, Pushbutton 1 ON,..Pushbutton 10 ON, Contact Input X Default: Pushbutton 1 ON This setpoint is active, when Local Mode is activated. The breaker open command can be initiated by the selected faceplate pushbutton. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–347...
Page 478 The tagging cannot be bypassed and can only be disabled (untagged) by pressing the TAG key again. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–348 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 479: Breaker Control
BYPASS REM BLK OPEN Range: Off, Any FlexLogic operand Default: Off This setting specifies selection of an input which when asserted bypasses the asserted remote block open signal. Open command is permitted for the breaker. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–349...
Page 480 DEAD SOURCE PERM setpoint from the Synchrocheck menu shall not be disabled. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–350 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 481 CHAPTER 4: SETPOINTS CONTROL Figure 4-148: Breaker Control logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–351...
Page 482: Switch Control (9)
To maintain the close/open command for a certain time, do so by either using the seal-in FASTPATH: timers Open Seal-In and Close Seal-In, or the setpoint "Seal-in" from the output relays, or FlexLogic. 4–352 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 483 This setting specifies the selection of an input which when asserted bypasses the block to the disconnect close control. The Close command is permitted. EVENTS Range: Disabled, Enabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–353...
Page 484 CONTROL CHAPTER 4: SETPOINTS Figure 4-149: Switch Control logic diagram 4–354 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 485: Virtual Input Control
FlexLogic™ equations. Trip Bus The 889 relay provides six identical Trip Bus elements. The Trip Bus element allows aggregating outputs of protection, control elements, inputs without using FlexLogic and assigning them in a simple and effective manner. Each Trip Bus can be assigned to trip, alarm or the other logic actions.
Page 486 Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Self-reset, Latched, Disabled Default: Self-reset The Any Trip operand must not be programmed as an input for the Trip Bus function. NOTE: NOTE 4–356 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 487 CHAPTER 4: SETPOINTS CONTROL Figure 4-150: Trip Bus logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–357...
Page 488: Breaker Failure (50Bf)
CHAPTER 4: SETPOINTS Breaker Failure (50BF) The 889 relay provides one Breaker Failure element. The Breaker Failure element determines that a breaker signaled to Trip has not cleared a fault within a definite time. The Breaker Failure scheme must Trip all breakers that can supply current to the faulted zone.
Page 489: Setup
In a microprocessor relay this time is not significant. In the 889 relay, the current magnitude ramps-down to zero in ¾ of a power cycle after the current is interrupted.
Page 490 (for example: breakers with opening resistors). Neutral current supervision is used to provide increased sensitivity. 4–360 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 491: Initiate
Ph IOC 1 OP Ph IOC 2 OP Ntrl TOC 1 OP Ntrl TOC 2 OP Ntrl IOC 1 OP Ntrl IOC 2 OP GND TOC 1 OP GND IOC 1 OP 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–361...
Page 492 CONTROL CHAPTER 4: SETPOINTS Figure 4-151: Breaker Failure logic diagram 4–362 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 493: Arc Flash Protection
Range: Off, Any FlexLogic operand Default: Off OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Disabled, Enabled Default: Enabled This setting enables or disables the events of the Arc Flash function. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–363...
Page 494 CONTROL CHAPTER 4: SETPOINTS TARGETS Range: Self-reset, Latched, Disabled Default: Latched Figure 4-152: Arc Flash logic diagram 4–364 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 495: Synchrocheck (25)
CONTROL Synchrocheck (25) The 889 relay provides one Synchrocheck element. The synchronism check function is intended for supervising the paralleling of two parts of a system which are to be joined by the closure of a circuit breaker. The Synchrocheck elements are typically used at locations where the two parts of the system are interconnected.
Page 496 The setpoint selects the maximum primary voltage difference in volts between the two sources. A primary voltage magnitude difference between the two input voltages below this value is within the permissible limit for synchronism. 4–366 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 497 Range: 0.00 to 1.50 x VT in steps of 0.01 x VT Default: 0.20 x VT The setpoint establishes a maximum voltage magnitude for the Bus Voltage. Below this magnitude, the Bus Voltage input used for Synchrocheck is considered “Dead” or de- energized. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–367...
Page 498 Synchrocheck can be also blocked when the relay is tripping. OUTPUT RELAY X For details see Common Setpoints. EVENTS Range: Enabled, Disabled Default: Enabled TARGETS Range: Disabled, Self-reset, Latched Default: Self-reset 4–368 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 499 CHAPTER 4: SETPOINTS CONTROL Figure 4-153: Synchrocheck logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–369...
Page 500: Vt Fuse Failure (Vtff)
CHAPTER 4: SETPOINTS VT Fuse Failure (VTFF) The 889 relay provides one VT Fuse Failure. The VT Fuse Failure detector can be used to raise an alarm and/or block elements that may operate incorrectly for a full or partial loss of AC potential caused by one or more blown fuses.
Page 501 CHAPTER 4: SETPOINTS CONTROL Figure 4-154: VT Fuse Failure logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–371...
Page 502: Flexlogic
NOTE Figure 4-155: FlexLogic Display Hierarchy The states of all digital signals used in the 889 are represented by flags (FlexLogic™ operands). A digital “1” is represented by a 'set' flag. Any external contact change-of-state can be used to block an element from operating, as an input to a control feature in a 4–372...
Page 503 Anlg lp Alarm PKP Analog Input 1 alarm has picked up Anlg lp Alarm OP Analog Input 1 alarm has operated Anlg lp 2 to 4 Similar to Analog Input 1 operands above 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–373...
Page 504 Breaker failure 1 operated with low level current supervision (includes breaker status supervision if set) BF1 52b Superv OP Breaker failure 1 operated with breaker status only BF1 OP Breaker failure 1 operated 4–374 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 505 Pushbutton [X] has been turned off Testing On Testing is enabled Testing Off Testing is disabled ^^ - content between the two ^ changes according to what is programmed in the noted Operand Custom Text register 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–375...
Page 506 NegSeq OV 1 OP Negative-sequence overvoltage element 1 has operated Negative Sequence IOC NegSeq IOC 1 PKP Negative Sequence IOC has picked up NegSeq IOC 1 OP Negative Sequence IOC 1 has operated 4–376 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 507 Phase B diff. current block detected 5th Harm Diff C harmonic Phase C diff. current block detected Overload Alarm Overload Alarm PKP Overload alarm has picked up. Overload Alarm OP Overload alarm has operated. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–377...
Page 508 Pushbutton 1 ON state has been asserted Pushbuttons PB 1 OFF Pushbutton 1 OFF state has been asserted Pushbuttons 2 and 3 The same set of operands as shown for Pushbutton 1 4–378 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 509 Speed Protection Speed Trip PKP Speed Trip has picked up Speed Trip OP Speed Trip has operated Speed Alarm PKP Speed Alarm has picked up Speed Alarm OP Speed Alarm has operated 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–379...
Page 510 Editor INSERT Insert a parameter in an equation list. DELETE Delete a parameter from an equation list. The first END encountered signifies the last entry in the list of processed FlexLogic™ parameters. 4–380 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 511 2 to 16 any input is ‘1’ 2 to 16 all inputs are ‘1’ 2 to 16 all inputs are ‘0’ NAND 2 to 16 any input is ‘0’ only one input is ‘1’ 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–381...
Page 512: Timers
Range: 0 to 60000 s in steps of 1 s Default: 0 s The setpoint sets the time delay to Dropout. If a Dropout delay is not required, set this function to "0”. 4–382 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 513: Non-Volatile Latches
Range: Any FlexLogic operand Default: Off If asserted, this specified FlexLogic operand ‘SET’ NV LATCH 1. LATCH 1 RESET Range: Any FlexLogic operand Default: Off If asserted, this specified FlexLogic operand ‘RESET’ NV LATCH 1. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–383...
Page 514: Flexlogic Equation
File Conversion and Handling of Time Stamps: When File Conversion is applied the three time stamps are processed (either carry forwarded, defaulted, updated with latest PC time) based on the Source and Destination File versions and Order code supported. 4–384 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 515 • If the ‘Logic Designer’ is open and in saved mode (no edits to save or compile), the ‘Logic Designer’ screen is closed and then the ‘FlexLogic Equation Editor’ launch is initiated. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–385...
Page 516: Viewing Flexlogic Graphics
It is strongly recommended and helpful to view an equation as a graphic diagram before it is saved to the 889 device in order to troubleshoot any possible error in the equation.
Page 517: Flexelements
For all the other combinations, the element displays 0.000 or N/A and will not assert any output operand. The analog value associated with one FlexElement can be used as an input to another FlexElement “Cascading”. Figure 4-158: FlexElement logic diagram 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–387...
Page 518 = maximum nominal primary RMS value of the Input 1(+) BASE and input 2(-) inputs Power = maximum value of V for the Input 1(+) and BASE BASE BASE input 2(-) inputs Power Factor = 1.00 BASE 4–388 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 519 Aux VT Secondary: 115 V • Aux VT Ratio: 120:1(phase-phase primary voltage = 13800V) • Phase CTs Primary: 2000 A • Ground CT Primary: 500 A • Frequency: 60Hz Detecting voltage difference: 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–389...
Page 520 The FlexElement can be set to detect under-power conditions and produce alarm, or trip if the apparent power is less than 500kVA. In this case the pickup setting for the FlexElement can be computed as follows: 4–390 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 521 = 1.00High V/Hz ratios in the power system are harmful for the insulation of the BASE protected equipment – transformer, generator, or elsewhere in the power system. If not detected, it can lead to excessive heat and degradation of the insulation which will 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–391...
Page 522 Hysteresis: 0.0 % To configure the pickup setpoint for a total arcing current of 5000kA /cycle, the per-unit pickup value can be calculated as follows: Pickup = 5000kA *cycle/2000 kA *cycle = 2.500 pu 4–392 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 523: Testing
The 8 Series can simulate current and voltage inputs when the Simulation feature is enabled. Other test operations are also possible such as the LED lamp test of each color, contact input states and testing of output relays. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–393...
Page 524: Simulation
When in test mode, and Force Relays is “Disabled”, the relay states maintain their normal operation. Forcing of output relay states is not performed when the Simulation State is “Disabled”. 4–394 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 525: Pre-Fault
CT Bank GROUND CT PRIMARY setpoint. For Sensitive Ground CT, the magnitude is entered as a multiple of the corresponding CT Bank SENS GROUND CT PRIMARY setpoint. J1(K1,K2) Prefault la(lb,lc,lg) Angle: Range: -359.9° to 0.0° in steps of 0.1 Default: 0.0° 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–395...
Page 526: Fault
Default: 0.0° J2(K2) Fault Van(Vbn,Vcn,Vx) Voltage: Range: 0.00 to 300.00 V in steps of 0.01 Default: 0.00 V J2(K2) Fault Van(Vbn,Vcn,Vaux) Angle: Range: -359.9° to 0.0° in steps of 0.1 Default: 0.0° 4–396 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 527: Post-Fault
Selects the color of each LED when the relay is in test mode (Simulation State is not set to “Disabled”) and Force LEDs is “Enabled”. The setpoints Simulation State and Force LEDs are found under Setpoints > Testing > Simulation > Setup 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–397...
Page 528: Contact Inputs
This setting is used to enter the number of iterations of the loop-back test. TEST START Range: No, Yes Default: No This setting is used to initiate the test when the command is set to “Yes”. ACTUAL VALUES 4–398 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 529 Actual Value, 16 bit enumeration 0XF214 0XF21A Tests to Run Actual Value, 16 bits 0xF215 0XF21B Tests Passed (Count) Actual Value, 16 bits 0xF216 0XF21C Tests Failed (Count) Actual Value, 16 bits 0xF217 0XF21D 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–399...
Page 530 TESTING CHAPTER 4: SETPOINTS 4–400 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 531 Grid Solutions 889 Generator Protection System Chapter 5: Status Status Figure 5-1: Main Status Screen 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–1...
Page 532: Configurable Sld
Upon pressing the Enter key, the tab labels change to the programmable tab pushbutton labels and a flash message for the breaker selected appears (Flash Message: “BKR1 Selected”). Pressing Escape de-selects the breaker/switch and the tab pushbutton labels. 5–2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 533: Annunciator
The initial view of the Tab Pushbutton controls is the Summary page, which shows the status of all 20 pushbuttons. To operate the pushbuttons, the user must navigate to the individual pages where the tab pushbuttons can be used to activate them. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–3...
Page 534: Generator
Terminal voltage and breaker status is used to determine if generator is online. The status is also available as FlexLogic operands, and only one status is possible at a time. Refer to the generator status logic diagram. 5–4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 535 (in seconds) from the thermal overload model assuming that the generator current remains at its current level. By default the value is 'Never' which indicates that the Thermal Overload element never operated. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–5...
Page 536: Breakers
EVENT Range: 0 to 4294967295 in steps of 1 Default: 0 DATE Range: MM/DD/YYYY HH:MM Default: 01/01/08 00:00:00 PARAMETER 1 to 64 Range: -2147483648 to 2147483647 in steps of 1 Default: 0 5–6 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 537: Arc Flash
The state of all virtual inputs is shown here, see next figure. The value for each Virtual Input is shown on the control panel graphically as a toggle switch in either the On (|) state or the Off (O) state. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–7...
Page 538: Virtual Outputs
The state of all virtual outputs is shown here, see next figure. The value for each Virtual Output is shown on the control panel graphically as a toggle switch in either the On (|) state or the Off (O) state. Figure 5-7: Status of Virtual Outputs 5–8 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 539: Flex State
GOOSE message can be a digital or analog value. Messages are launched within one scan of a digital point status change or an analog exceeding its deadband. The 889 server supports a subset of the server features described in part 7.2 of the IEC61850 standard.
Page 540 MAIN NOT VALIDATED OK Range: NO, YES Default: NO MAIN NOT VALIDATED DONE Range: YES, NO Default: YES MAIN VALIDATED OK Range: YES, NO Default: YES MAIN VALIDATED DONE Range: YES, NO Default: YES 5–10 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 541 Range: NONE, ACTIVE Default: NONE ETHERNET DNP Range: NONE, ACTIVE Default: NONE ETHERNET IEC104 Range: NONE, ACTIVE Default: NONE ETHERNET IEC61850 Range: NONE, ACTIVE Default: NONE ETHERNET GOOSE Range: NONE, ACTIVE Default: NONE 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–11...
Page 542 Range: 0 to 99 in steps of 1 Default: 0 SFTP - Maximum Range: 0 to 99 in steps of 1 Default: 0 SFTP - Remaining Range: 0 to 99 in steps of 1 Default: 0 5–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 543: Information
MAC Address 1: The MAC address for Ethernet port 4 • MAC Address 2: The MAC address for Ethernet port 5 Hardware Versions Path: Status > Information > Hardware Versions The Information related to the relay hardware is displayed here. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–13...
Page 544: Environment
EAM stayed in the ranges specified. • Surge Count: The number of surge (>500 V/1.2/50 µS) events that have occurred since the EAM started recording data. 5–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 545: Device Status
Default: NO BREAKER TRIPPED Range: YES, NO Default: NO ALARM Range: YES, NO Default: NO TRIP Range: YES, NO Default: NO ACTIVE GROUP Range: SP Group 1-6 Active Default: SP Group 1 Active 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–15...
Page 546: Clock
If an active master has been selected but lock is not at present established • SYNCH’D (NO PDELAY) If the port is synchronized, but the peer delay mechanism is non-operational • SYNCHRONIZED If the port is synchronized 5–16 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 547: Metering
The phase angles in 8 Series relays are always presented as negative values in the lagging direction as illustrated in the following. Figure 6-1: Phase Angle Measurement 8 Series Convention METERING 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–1...
Page 548 The measured values can also be displayed in the PC (EnerVista 8 Series) program. The same example of actual currents displayed in the EnerVista 8 Series program is shown as follows. 6–2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 549 CHAPTER 6: METERING Figure 6-3: Current Metering Screen (EnerVista 8 Series) The complete list of actual values available in the Metering menu is covered in the following sections. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–3...
Page 550: Metering Summary
SUMMARY CHAPTER 6: METERING Summary Path: Metering > Summary The Metering Summary menu consists of display screens, including a graphical presentation of key phasor quantities. 6–4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 551: Generator
Range: 0.000 to 120000.000 A Phase A restraint (Ia Restr) Range: 0.000 to 120000.000 A Phase B restraint (Ib Restr) Range: 0.000 to 120000.000 A Phase C restraint (Ic Restr) Range: 0.000 to 120000.000 A 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–5...
Page 552: Overall Differential Current
(base CT) used for estimating the differential and restraint currents. The winding reference is explained in the Transformer Setup section. Speed Path: Metering > Generator > Speed SPEED Range: 0 to 8640 RPM in steps of 1 Default: 0 6–6 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 553: Frequency Oob Accumulation
This value represents the vectorial sum of the ‘3rd Harm VN in Sec’ and ‘3rd Harm V0 in Sec’. “Sec” in metering values: “3rd Harm VN in Sec”, “3rd Harm V0 in Sec” and “3rd Harm VN+V0 NOTE: in Sec” specifies the secondary voltage quantity. NOTE 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–7...
Page 554: Impedance
Phase A (Ia RMS) Range: 0.000 to 12000.000 A Phase B (Ib RMS) Range: 0.000 to 12000.000 A Phase C (Ic RMS) Range: 0.000 to 12000.000 A Ground (Ig RMS) Range: 0.000 to 12000.000 A 6–8 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 555 Range: 0.0 to 359.9° Positive Sequence Angle (I_1 Angle) Range: 0.0 to 359.9° Negative Sequence Angle (I_2 Angle) Range: 0.0 to 359.9° Load (I%) (Only for CT Bank 1-J1) Range: 0.0 to 100.0 % 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–9...
Page 556: Voltages
Range: 0.0 to 359.9° Phase C Angle (Vcn Angle) Range: 0.0 to 359.9° Phase to Phase AB Angle (Vab Angle) Range: 0.0 to 359.9° Phase to Phase BC Angle (Vbc Angle) Range: 0.0 to 359.9° 6–10 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 557 Metering > Ax VT Bnk-J2 Auxilary Voltage (Vaux) Range: 0.00 to 600000.00 V Auxilary Voltage RMS (Vaux RMS) Range: 0.00 to 600000.00 V Auxilary Voltage Angle (Vaux Angle) Range: 0.0 to 359.9° 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–11...
Page 558: Frequency
Frequency (Auxiliary Voltage Input J2-Vx) Range: 2.000 to 90.000 Hz Volts Per Hertz Path: Metering > Volts per Hertz VOLTS PER HERTZ 1 (2) Range: 0.00 to 4.00 V/Hz in steps of 0.01 Default: 0.00 V/Hz 6–12 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 559: Harmonics 1(Harmonics 4)
Phase A Twenty Fifth Harmonic (Phase A 25) Range: 0.0 to 100.0 % Phase B Twenty Fifth Harmonic (Phase B 25) Range: 0.0 to 100.0 % Phase C Twenty Fifth Harmonic (Phase C 25) Range: 0.0 to 100.0 % 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–13...
Page 560: Harmonic Detection
Range: 2.000 to 90.000 Hz Voltage Difference (Volts Difference) Range: 0.00 to 600000.00 V Voltage Angle Difference (Angle Difference) Range: 0.0 to 359.9° Voltage Frequency Difference (Frequency Difference) Range: 2.000 to 90.000 Hz 6–14 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 561: Power
3-phase K1 Currents & 3-phase J2 Voltages. NOTE Figure 6-4: Flow direction of signed values for watts and VARs Path: Metering > Power 1(X) Real Total (Real) Range: - 214748364.8 kW to 214748364.7 kW 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–15...
Page 562: Energy
Negative Watt Hours (Neg WattHours) Range: 0.0 MWh to 214748364.7 MWh Positive Var Hours (Pos VarHours) Range: 0.0 Mvarh to 214748364.7 Mvarh Negative Var Hours (Neg VarHours) Range: 0.0 Mvarh to 214748364.7 Mvarh 6–16 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 563: Power Factor
Date/Time Phase A Demand (J1 Date/Time Ph A Demand) MM/DD/YY HH:MM:SS Date/Time Phase B Demand (J1 Date/Time Ph B Demand) MM/DD/YY HH:MM:SS Date/Time Phase C Demand (J1 Date/Time Ph C Demand) MM/DD/YY HH:MM:SS 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–17...
Page 564: Power Demand
Default: 0.0 kW Directional Power 2 (Directional Power 2) Range: -214748364.8 kW to 214748364.7 kW Default: 0.0 kW Directional Power X (Directional Power X) Range: -214748364.8 kW to 214748364.7 kW Default: 0.0 kW 6–18 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 565: Arc Flash
This value shows the hottest RTD temperature from the group of RTDs when setpoint Application is programmed as Bearing. RTD 1(13) Range: -40 to 250°C (temperatures < -40°C are displayed as “Shorted” and temperatures > 250°C are displayed as “Open RTD”) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–19...
Page 566: Rtd Maximums
FlexEI 1 Op Signal FlexEI 2 Op Signal FlexEI 3 Op Signal FlexEI 4 Op Signal FlexEI 5 Op Signal FlexEI 6 Op Signal FlexEI 7 Op Signal FlexEI 8 Op Signal 6–20 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 567: Records Events
Records Events The 889 has an event recorder which runs continuously. All event records are stored in flash memory such that information is permanently retained. The events are displayed from newest to oldest event. Each event has a header message containing a summary of the event that occurred, and is assigned an event number equal to the number of events that have occurred since the recorder was cleared.
Page 568: Transient Records
Viewer” button to view the waveform. Data Logger The 889 Data Logger record can be retrieved and seen from this window. It displays the oldest and newest timestamps, and the total number of samples captured for all channels programmed in Setpoints > Device > Data Logger menu.
Page 569: Breakers
(the count units label also appears). Also included, is the date and time stamp for the frozen count. The Counter microseconds frozen value refers to the microsecond portion of the time stamp. Path: Records > Digital Counter 1 (16) 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 7–3...
Page 570: Remote Modbus Device
FlexLogic name defined in the Generic Modbus Device Setpoint label field in the CID file. The value displayed is based on the Format Code field defined in the Generic Modbus Device Setpoint for a specific digital value in the CID file. 7–4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 571 FlexAnalog name defined in the Generic Modbus Device Setpoint label field in the CID file. The value displayed is based on the Data Type and the Units field defined in the Generic Modbus Device Setpoint for a specific analog value in the CID file. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 7–5...
Page 572: Clear Records
The Clear Records command is accessible from the front panel and from the EnerVista 8 Series Setup software. Clear records from here. Path: Records > Clear Records Records can be cleared either by assigning “On” to the appropriate setting or by assigning a FlexLogic operand. 7–6 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 573 Relay Firmware in Chapter 3, Interfaces > Software Interface > Upgrading Relay Firmware. Path: Maintenance > Environmental Awareness Health Report Over the life of the 889 product remedial action can be required. The 889 has a module which can record environmental data. 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 574: Environmental Health Report
Prolonged exposure to harsh environments and transient conditions that exceed those stated in Section 1 - Specifications reduce the life of electronic products. The 889 has an Environmental Awareness Module (EAM) to record environmental data over the life of the product.
Page 575: Maintenance Environmental Health Report
CHAPTER 8: MAINTENANCE ENVIRONMENTAL HEALTH REPORT 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 8–3...
Page 576: General Maintenance
General Maintenance The 889 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time. The expected service life of a 889 is 20 years when the environment and electrical conditions are within stated specifications. While the 889 performs continual self-tests, it is recommended that maintenance be scheduled with other system maintenance.
Page 577: Revision History
Appendix A includes the warranty and revision history. Warranty For products shipped as of 1 October 2013, GE Grid Solutions warrants most of its GE manufactured products for 10 years. For warranty details including any limitations and disclaimers, see the GE Digital Energy Terms and Conditions at https:// www.gridsolutions.com/multilin/warranty.htm...
Page 578: Major Updates
Added new Switch Control (for disconnect switch control) section to Setpoints > Control > Switch Control Added new Pole Discordance section to Setpoints > Control Added new CT Supervision section to Setpoints > Control A–2 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...
Page 579 Updated the FlexLogic Operands table 4-342 Added new Speed Protection section to Setpoints>Monitoring Revised Generator Status logic diagram: 894137A1.cdr for status offline and status unknown Table 4: Major Updates for 889-A1 PAGE NUMBER CHANGES Initial release 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL A–3...
Page 580 REVISION HISTORY CHAPTER A: APPENDIX A A–4 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL...

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