GE AK-50 installation instructions Equipment Conversion, Installing Mounting Brackets

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SECTION 7. EQUIPMENT

CONVERSION

Installing Mounting Brackets

The equipment compartment contains the mating portions of the fourth-wire disconnect and the neu- tral sensor. The same disconnect assembly is used for types AKD, AKD-5, and AKD-6 switchgear. Mounting brackets for AKD, AKD-5, AKD-6, and AKD-8 switchgear applications are included in the conversion kit. Figures 31, 32, 33, 34, and 35 are mounting diagrams for the various applications. Table 1 is a key to the numbers used in these figures to indicate various hardware items.

Legend

Description

225

Breaker portion of fourth-wire disconnect

226

Equipment portion of fourth-wire disconnect

229

Mounting bracket for AK-100 for AKD

compartments

 

230

10-32 x 1.375 inch mounting screw

231

Insulation

232

#10 lock washer

233

#10 flat washer

235

1/8-20 flat washer

236

1/8-20 lock washer

237

1/4-20 nut

238

1/4-20 x 1.25 inch mounting screw

239

Bracket

Table 1. Legend for number symbols appearing in Figures 31–

35.

Figure 31. AK-50 & AKS-50 fourth-wire disconnect for AKD.

Figure 32. AK-75 & AK-100 fourth-wire disconnect for AKD-5 &

AKD-6.

Figure 33. AK-100 fourth-wire disconnect for AKD.

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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 BracketInstalling the Trip Paddle Adjusting the Flux ShifterBreakers with ECS or SST Trip Systems Installing the Trip Unit Mounting Bracket EC or Power Sensor Trip SystemECS or SST Trip System Trip unit mounting bracket attached to the mounting Plate Crossbar Modification Back Frame ConversionRemoving the Existing Trip Devices AK-50 & AKS-50 Breakers with SST Trip SystemsAK-75 & AK-100 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 UnitFOUR-WIRE Ground Fault Option Installing the Fourth-Wire DisconnectAK-50 & AKS-50 Stationary Breakers 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