BOLT 6F7024 - Caterpillar

Description
Illustration 1 g01285975
Location of the Flywheel Inverter Assembly (1) Flywheel Inverter AssemblyThe Flywheel Inverter assembly is located in the upper right side of the flywheel cabinet. When online, the Flywheel Inverter is used to convert the DC voltage to AC Voltage in order to keep the flywheel at speed. During discharge, the Flywheel Inverter assembly converts the 3-phase AC voltage from the flywheels in order to keep the DC Bus charged. The regulated DC voltage is used by the Inverter Cabinet where the energy is converted back to AC voltage to supply the customer load.Each cabinet for the flywheel contains two inverter assemblies. Each Inverter assembly is made up of three Inverter modules. Each complete Inverter assembly includes the following components:
Flywheel Inverter module
DC capacitors
heat sinkIllustration 2 shows a complete Flywheel Inverter module.
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Complete Flywheel Inverter Module (2) DC Bus Connector (3) Ribbon Connector to SKI PWA J1 (4) Inverter Module (5) Inverter Module Bus Connections (6) Heat Sink (7) Shroud (8) DC Capacitors
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Flywheel Inverter AssemblyRemoval Procedure
Refer to Systems Operation, Testing and Adjusting, RENR7654, "Internal Component Preremoval Steps (Flywheel Cabinet)" in order to shut down the system and gain access to internal components.
Electrostatic discharge can damage integrated circuits or semiconductors if you touch bus connector pins. When not in use, keep the module in the static-shield bag. Follow these guidelines when you handle any module:Touch a grounded object to discharge static potential.Wear an approved wrist-strap grounding device.Do not touch the bus connector or connector pins.Do not touch circuit components inside the module.If available, use a static-safe work station.
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SKiiP Interface Board
Remove the tie wraps that hold the three SKiip Interface (SKI) wire toroids away from the bus work.
Disconnect the three connectors from each of the three SKI boards. Verify the labeling on each connector with the location of all connectors. Refer to Illustration 4.
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Inverter A (9) Fuse Switch Indicators for Inverter A
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Inverter B (10) Fuse Switch Indicators for Inverter B
Disconnect the wiring for the fuses from Inverter A (9). The wires run from the Field Coil Driver boards to the Field Coil Driver fuses.Refer to Systems Operation, Testing and Adjusting, RENR7654, "Field Coil Driver" for the location of the Field Coil Driver boards.
Disconnect the two wires from each of the Fuse Status Indicators on the front of each bus fuse for the Inverter to be removed. Refer to Illustration 5 for Inverter A (9) removal and Illustration 6 for Inverter B (10) removal.
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Inverter A (11) Wire and Cable Connections for Inverter A
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Inverter B (12) Wire and Cable Connections for Inverter B
Disconnect the wires and cables that connect to the front bus work on the Inverter that is to be removed. Refer to Illustration 7 for inverter A (11) and Illustration 6 for Inverter B (12) .
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(13) A and B Inverter Bus Work Connection Bolt
Remove the Inverter bus work connection bolt (13). Refer to Illustration 9.
Remove the ribbon cable from the top left side of the Inverter module. Refer to Illustration 4.
Remove the DC Bus