GE installation instructions AK-50 & AKS-50 Draw-Out Breakers, AK-75 & AK-100 Draw-Out Breakers

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AK-50 & AKS-50 Draw-Out Breakers

The fourth-wire disconnect for AK-50 and AKS-50 draw-out breakers mounts to the lower back frame, as shown in Figure 25.

If the terminal board is already present on the breaker, just replace the control harness. Main- tain the following color code: white wire to common, black wire to the tap.

If the disconnect must be added, mount it as shown in Figure 25.

AK-75 & AK-100 Draw-Out Breakers

There are two fourth-wire disconnect designs used with these breakers. One design is used on breakers for GE type AKD switchgear, while the other applies to breakers for GE types AKD-5 and AKD-6 equipment. The only difference is the bracket used for mounting the disconnect to the breaker. Figures 26 and 27 show these two designs.

The conversion kit contains an assembled, ready-to- install mounting block and bracket for AKD-5 and AKD-6 installation, plus an addition bracket only for type AKD equipment installations. For AKD equip- ment, remove the bracket from the assembled dis- connect and replace it with the AKD bracket.

The fourth-wire disconnect for AK-75 and AK-100 draw-out breakers mounts to the lower back frame as shown in Figure 28.

If the terminal board is already present on the breaker, just replace the control harness. Main- tain the following color code: white wire to common, black wire to the tap.

If the disconnect must be added, mount it as shown in Figure 28.

Figure 25. Fourth-wire disconnect installed on AK-50 & AKS-50

draw-out breakers.

Figure 26. Fourth-wire disconnect assembly for AKD-5 or AKD-6

equipment.

Figure 27. Fourth-wire disconnect assembly for AKD equipment.

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Contents Introduction Table of Contents List of Figures General Information Before InstallationRelocating and Remounting the W and X Relays Front Frame Breaker ConversionBreakers with EC or Power Sensor Trip Systems Installing the Flux Shifter AssemblyAKU-50 Breakers Only Breakers with a Side BracketBreakers with ECS or SST Trip Systems Installing the Trip PaddleAdjusting the Flux Shifter ECS or SST Trip System Installing the Trip Unit Mounting BracketEC or Power Sensor Trip System Trip unit mounting bracket attached to the mounting Plate Crossbar Modification Back Frame ConversionAK-75 & AK-100 Breakers with SST Trip Systems Removing the Existing Trip DevicesAK-50 & AKS-50 Breakers with SST Trip Systems AK-50 & AKS-50 Breakers Installing the Phase SensorsAK-75 & AK-100 Breakers Phase sensor installation on AK-75 & AK-100 breakersConfiguring the Trip Unit Installing the Trip UnitAK-50 & AKS-50 Stationary Breakers FOUR-WIRE Ground Fault OptionInstalling the Fourth-Wire Disconnect AK-75 & AK-100 Draw-Out Breakers AK-50 & AKS-50 Draw-Out BreakersAK-75 & AK-100 back frame conversion Outline of the neutral sensor for AK-50 breakers Installing the Neutral SensorOutline of the neutral sensor for AK-75 and AK-100 breakers Equipment Conversion Installing Mounting BracketsFourth-wire disconnect for AKD-5 & AKD-6 Testing Testing and TROUBLE- ShootingTrouble-Shooting Nuisance Tripping on Ground Fault-Equipped BreakersAK-50 Page Page Appendix 1. Drill Template for Flux Shifter Mounting Appendix Drill TemplatesPage Page Page Page GE Industrial Systems