GE Industrial Solutions AKD-20 Low Voltage Switchgear - Manuel (Page 25)

AKD-20 Low Voltage Switchgear
Chapter 3. Description
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1. Cable lugs - mechanical type
Fig. 3-24. Cable termination provisions
See Fig. 3-25. When furnished, the terminal boards (2), Fig. 3-25, for
such connections are located in an enclosed vertical wiring trough
mounted on the side of the cable compartment. The trough is of
steel construction with bolted covers to provide an isolation barrier
between the control wiring (1) and the adjacent power cables.
A neutral bus, insulated from ground, is provided in the bus area on
switchgear designed for four-wire systems. The neutral bus is
located near the top of the cable compartment. It includes
provisions for terminating the neutral conductor of four-wire feeder
cables and also direct mounting of the neutral CT or neutral
Rogowski as required for those feeder system circuit breakers
having a ground fault trip function.
1. Internal equipment control wiring
2. Terminal boards
3. Space for purchaser's field control wiring
Fig. 3-25. Control wiring termination trough
3-12 Ground Bus
All General Electric AKD-20 switchgear sections are grounded to the
internal equipment ground bus (4), Fig. 3-26, located at the bottom
of the cable compartment.
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