Ge-industrial-solutions MicroVersaTrip Plus and MicroVersaTrip PM AK-1-15, Manuel d'utilisateur

INTRODUCTIONGE Conversion Kits are designed for upgradingexisting I-T-E®/ABB® low-voltage power circuitbreakers, rather than replacing the entire brea

10Solid State Trip Device Removal (K-3000Sand K-4000S only)1. Remove the seven mounting screws from thefront escutcheon, as shown in Figure 17, and li

114. Remove the retaining clip from the centermounting post of each line and load draw-outprimary contact finger assembly, as shown inFigure 20, then

12Installing the Phase Sensors (All Models)1. Slide the CT spacer over each load-side copperstab of the breaker, as illustrated in Figure 23.2. Slide

13SECTION 4. FRONT FRAMECONVERSIONThe front frame conversion of an I-T-E/ABB typeK-3000, K-3000S, K-4000, or K-4000S circuit breakerconsists of the

14Installing the Flux Shifter1. Remove and discard the existing hex-head boltand locking hex nut from the right-pole closingarm, as shown in Figure 27

154. Connect the flux shifter reset arm to the resetstud using the X washer provided, as shown inFigures 31 and 32.CAUTION: Seven X washers are suppli

16Adjusting the Flux ShifterWhen the trip paddle and flux shifter have beeninstalled, the following adjustments must be made:1. With the breaker in th

17Installing the Trip Unit Wiring HarnessThe wiring harness includes a 36-pin connector,shown in Figure 34, that must be assembled andinstalled onto t

183. Slide the adapter bracket and connector assem-bly over the guide pins of the trip unit bracket.Press the two steel push nuts provided onto thegui

19Installing the Trip Unit Bracket1. Secure the trip unit bracket assembly and theauxiliary switch mounting plate to the breakerwith the three 1/4-20

2TABLE OF CONTENTSSECTION 1. GENERAL INFORMATION...

203. When the communications and/or the neutral CTwiring are installed, tie these leads to the front ofthe breaker where they will be accessible in th

21SECTION 5. INSTALLING THE TRIPUNITThe trip unit is attached to the trip unit mountingbracket. Guide pins in the bracket mate with theholes on either

22SECTION 6. FOUR-WIRE GROUNDFAULT OPTIONThe ground fault option for four-wire installationsrequires the installation of an additional currentsensor o

23SECTION 7. TESTING AND TROUBLE-SHOOTINGWARNING: Do not change taps on the current sen-sors or adjust the trip unit settings while thebreaker is carr

243. Verify that the wiring harness connections to thesensors have the proper polarity (white lead tocommon, black lead to tap), as shown in thecablin

25Figure 46. Cabling diagram for MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units with ground fault on four-wire loads.

26NOTES

These instructions do not cover all details or variations in equipment nor do they provide for every possiblecontingency that may be met in connection

3LIST OF FIGURES1. I-T-E/ ABB breaker before conversion. ...

4SECTION 1. GENERAL INFORMATIONGE Conversion Kit installation is straightforward, butdoes require careful workmanship and attention tothese instructio

5SECTION 3. BACK FRAME BREAKERCONVERSIONThe back frame conversion of an I-T-E/ABB typeK-3000, K-3000S, K-4000, or K-4000S circuit breaker,as shown i

63. Remove the nine mounting screws securing theauxiliary switch mounting plate to the breaker, asshown in Figure 4. Remove the mounting plate.CAUTION

76. To remove the phase barriers on each phase,push the moving contact assembly and theadjustment screw toward the rear of the breaker,then pull the p

89. The stationary and moving contact assembliesmust be separated from the original molded baseassembly. Remove the eight hex-head mountingbolts, as s

95. Remove the two mounting screws securing thetrip paddle for the right pole assembly to thecommon trip shaft, as shown in Figure 15. Dis-card the tr