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Summary of Contents for GE MicroVersaTrip AKSU-50
- Page 1 • G EK-64468 Installation MicroVer s aTri Manual Conver s ion Kit s Breaker Types AK/AKU/AKT-50, AKS/ AKSU/ AKST -50, AK/AKR-75, AK/AKR-100 GENERAL ELECTRIC...
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Page 2: Table Of Contents
MicroVersaTrip™ Conversion Kits Table of Contents CONT ENTS Page SECTION 1-lntroduction SECTION 4-Four-wire Ground Fault General Information ......13 General Information ......Breaker Conversion-AK/AKS-50 Drawout .. -
Page 3: Section 1-Lntroduction
SECTION 1-lntroduction 1.1-General lnformation installing the kit on the breaker, an associated neutral sensor (CT) is required for separate mounting in the equipment. These instructions cover installation of the MicroVersaTripTM Insure also that retrofitted breakers are applied within their solid-state, trip-device, conversion kits on the AK/AKR-75/1 00 short circuit ratings;... - Page 4 SECTION 1 (CON T'D}-Introduction Table 1-4-Basic Programmer Table 1-3-Current Sensors Catalog No. Sensor Ampere Breaker Type Cat. No. Range Breaker Frame Cat. No. 300-800 1 93A1 439G 1 4 Size AK/AKS-50 AKU/AKSU-50 600-1600 1 93A1 439G 1 5 1 600 TA9VT20 AKT/AKST-50 800-2000...
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Page 5: Section 2-Front Frame Conversion
SECTION 2-Front Frame Conversion 2.3-Remounting W and X Relays 2.1-General lnformation The Front Frame Conversion consists of the following: Type AK-2/2A Breakers (EC trip devices) electrically operated with quick-close may require the relocation of 1. Relocating the W Relay on quick-close, electrically their anti-pump, W-Relay to insure proper space for the operated, Type AK-50/75/1 00 breakers equipped with EC MicroVersaTriprM programmer unit. - Page 6 SECTION 2 (CON T'D}-Front Frame Conversion Fig. 2-2. New Wand X relay mounting brackets 1. Actuator 2.4-Fiux Shifter Installation 2. Actuator arm 3. Trip rod The Flux Shifter device is shown in Fig. 2-3. For breakers 4. Trip rod adjuster end equipped with an ECS or SST Trip Device system: 5.
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Page 7: Trip Paddle Installation
2.4.2-Adjustments Once the flux shifter and its trip paddle are installed and the breaker frames are reassembled, the following adjustments must be made. With the mechanism in the RESET position set the gap between the trip paddle and the end of the flux shifter 7.56 0.28 EXISTING... -
Page 8: Programmer Mounting Installation
pattern for these holes is given in Fig. 2-8. Once the plate is trip rod to 0.100 inches. Use a 0.100 inch diameter rod as shown in Fig. 2-6. Set the adjuster end of the trip rod and installed, assemble the mounting bracket to the plate using lock it in place with the jam nut. -
Page 9: Section 3-Back Frame Conversion
SECTION 3-Back Frame Conversion 3.1-Generallnformation 3.2-Crossbar Modification The back frame conversion consists of the following: The flux shifter's reset linkage is driven by the actuator bracket. See Fig. 2-3. The actuator bracket must be assem 1. Modifying the crossbar assembly for the flux shifter bled to the left side link of the left pole, as shown in Fig. -
Page 10: Phase Sensors-Ak/Aks-50
SECTION 3 (CONT'D)-Back Frame Conversion 3 .3-Phase Sensors-AK/AKS-50 3.4-Phase Sensors-AKR-75/1 00 For EC and Power Sensor equipped breakers: For SST and ECS equipped breakers: 1. Remove the existing trip devices and harnesses. 1. Remove the back frame harness from the sensor terminal boards. -
Page 11: Phase Sensors-Ak-75/1 00
3.5-Phase Sensors-AK-75/1 00 3.6-Backframe Harness Installation 3-7. For EC and Power Sensor equipped breakers: Install the Backframe Harness as shown in Fig. or Fig. Wire ties used to form and secure the harness are provided. 1. Remove the existing trip devices and harnesses. 2. - Page 12 ROUTE LEADS BETWEEN POLE BASES PHASE SENSOR LEFT I 11 '-'- -- --t CENTER RIGHT POLE POLE POLE MOUNTING HOUSING HOUSING WHEN USED, THE 4TH-WIRE NEUTRAL SENSOR MAKE ONE COMPLETE WRAP DISCONNECT BLOCK MOUNTS ON TOP OF AND SOLDER IN PLACE TAP TERMINAL BOARD VIA ITS TWO (5 TERMINALS) LOWER MOUNTING SCREWS.
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Page 13: Section 4-Four-Wire Ground Fault
SECTION 4-Four Wire Ground Fault 4.2-Breaker Conversion 4.1-General lnformation AK/AKS-50 Drawout The MicroVersaTripTM Ground Fault option requires an addi tional neutral sensor when used on a four-wire system having The 4th-wire disconnect for the AK/AKS-50 Drawout breaker its neutral grounded at the transformer. The phase sensors mounts to the lower-back frame as shown in Fig. -
Page 14: Breaker Conversion-Ak/Aks-50 Stationary
SECTION 4 (CONT'D}-Four-wire Ground Fault 4.3-Breaker Conversion- 4.4-Breaker Conversion AK/AKS-50 Stationary AK/AKR-75/100 Drawout The 4th-wire disconnect for stationary breakers is a terminal There are two 4th-wire disconnect designs used with these board which is mounted to the lower front channel as shown breakers. -
Page 15: Breaker Conversion-Akr-75/100 Stationary
AKD Type AKD-5 Type -- - 2 39 As received in kit, For AKD installation, block is assembled remove block from AKD-5 to the AKD-5 type bracket and remount 239. bracket. on bracket Fig. 4-3. 4th-wire disconnects for AK/AKR-75/100 drawout breakers 4.6-Equipment Conversion The 4th-wire disconnect for the AKR-AKR-75/1 00 Drawout breaker mounts to the lower-back frame as shown in Fig. - Page 16 CENTER LEFT POLE POLE j-- 6 . 0 0 ( 2 ) 0. 2 24 DRILL DIAMETER HOLES IN 24 5 c COMPARTMENT OF BRACKET (DIMENSIONS IN INCHES) 225. Breaker portion of 4th-wire disconnect 232. 10# lock washer 226. Equipment portion of 4th-wire disconnect 233.
- Page 17 PHASE SENSOR REAR OF TE � MINAL BOARD CENTER LEFT POLE POLE BREAKER � AK75-7.00 AK100-9.75 DRILL (2) 0.224 DIAMETER ACKET HOLES IN COMPARTMENT COMPARTMENT VIEW LOOKING AT REAR OF COMPARTMENT SIDE VIEW OF COMPARTMENT (DIMENSIONS IN INCHES) 225. Breaker portion of 4th-wire disconnect 232.
- Page 18 PHASE SENSOR TERMINAL BOARD 0.44 VIEW LOOKING AT REAR OF COMPARTMENT SIDE VIEW OF COMPARTMENT (DIMENSIONS IN INCHES) 233. 10# flat washer 225. Breaker portion of 4th-wire disconnect 235. '1•-20 flat washer 226. Equipment portion of 4th-wire disconnect 236. '1.-20 lock washer 229.
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Page 19: Neutral Sensors
NOTE: EXISTING HOLES IN SUBSTRUCTURE ARE 0.272 DIAMETER 4TH CIT DISCONNECT BREAKER PORTION BREAKER SUBSTRUCTURE & ! _l �����tR FRAM SUBSTRUCTURE (DIMENSIONS IN INCHES) 110. (2) Screws (#10-32 1'/a-inch) 114. (2) Flat washers 111. (2) Lock washers 115. (2) lock washers 112. - Page 20 :!:0.032 10.75 1.75 $--$- -EFT-fi7 SENSOR CAT. NO. AMPERES TSVG830BK 1200-3000 TSVG940BK 1600-4000 (DIMENSIONS IN INCHES} Fig. 4-11. Outline of the AKR-75/1 00 and AK-75/1 00 neutral sensor...
- Page 21 � LINE GEN. ELECTRIC 0.562 DIAMETER HOLES MAXIMUM 1.25 MAXIMUM OBSERVE STRAP f--- - 1 .25 " D " LINE ANO LOAD STRAP CONNECTIONS BOND OR GROUND ON LINE SIDE ONLY " E " " C " 1.75 (DIMENSIONS IN INCHES) Sensor Ampere Cat.
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Page 23: Section 5-Programmer Installation
SECTION 5-Programmer Installation 5.1-General lnformation To remove the programmer: 1. Move locking lever to horizontal position, thus The programmer is attached to the bracket mounted to releasing the programmer pin. the left side of the breaker's center channel as shown in Fig. -
Page 24: Section 6-Testing And Troubleshooting
SECTION 6- Testing and Troubleshooting 6.1-General lnformation 6.3-Troubleshooting Once the breaker has been converted and before it is ener When malfunctioning is suspected, the first step in trouble gized, it must be tested as described in Section 6.2 . If any shooting is to examine the circuit breaker and its power problems develop with the trip device system, refer to Sec... -
Page 25: False Tripping-Breakers Equipped With Ground Fault
4. On Ground Fault breakers serving four-wire loads, 6.4-False Tripping-Breakers check that the neutral sensor is properly connected. See Equipped With Ground Fault cabling diagram Fig. 6-3. In particular, the following: When nuisance tripping occurs on breakers equipped with A. Verify that the neutral sensor has the same rating the Ground Fault trip element, a probable cause is the exis... - Page 26 SECTION 6 (CO NT' D)-Testing and Troubleshooting PROGRAMMER UNIT ------, HARNESS LOAD CONNECTOR - - _. (A M P 1 - 3 5 03 5 6 - 9 ) PR OG RA M M E R CONNECTOR Fig. 6-2. Cabling diagram- MicroVersaTrip™ with ground fault on 3-wire load cpA cpB cp PROGRAMMER FLUX SHIFT...
- Page 27 4-WIRE LOAD PROGRAMMER UNIT TRIP DEVICE -------, BREAKER BACK FRAME-., LEFT POLE CURRENT I SENSOR HARNESS CONNECTOR ( AM P 1- 13 5035 6- 9 ) PROGRAMMER LOAD CONNECTOR Fig. 6-4. Cabling diagram- MicroVersaTrip™ with ground fault on 4-wire load-breaker reverse feed GROUND FAULT DEFEAT MODULE PROGRAMMER CAT.
- Page 28 cf>B q,c PROGRAMMER �AA UNIT iT-t-t-1 -----, BREAKER BACK FRAME "'-'1 YELLOW PARTIAL LEFT POLE YELLOW CURRRENT SENSOR YELLOW I lA YELLOW YELLOW YELLOW HARNESS PROGRAMMER CONNECTOR CONNECTOR LOAD Fig. 6-6. Partial cable diagram- "H" option winding connections PROGRAMMER REMOTE FAULT MICROVERSATRIP SECONDARY INDICATION...
- Page 29 PROGRAMMER PROGRAMMER MICROVERSATRIP™ SECONDARY HARNESS PROGRAMMER DISCONNECT CONNECTOR EQUIPMENT BREAKER SHORT TIME INPUT SHORT TIME OUTPUT GROUND FAULT INPUT GROUND FAULT OUTPUT (1-350239-9)( 1-350246-9) Fig. 6-8. Cabling diagram- zone selective interlock...
- Page 30 5 I 7 I I 1 • • • MULTIPLES OF CURRENT SETTING, C \.ong Time Pickup O.BC to 1.1C 50 ID 70 1010! 1111 Fixed at 1. iC Hi-Range Instantaneous "H" Su ffix Adj. Element Not 60 Hz Operation Only_ Provided •••...
- Page 31 ! ! I U U - · · 7 1 1 1 50 10 70 101011 1000 ·- "" ! • LVPCB MC & ICCB LVPCB MC & ICCB LVPCB MC & ICCB "' " z .. _ . II .
- Page 32 These instructions do not purport to cover all details or variations in equipment General Electric Co. For f u rther i nformation nor to provide for every possible contingency to be met i n connection with instal D i stribution Eq u i pment call o r write your local lation operation or maintenance.