GE AKD-10 Application Manual page 8

• Key interlocks
This option allows locking of the circuit breaker in the open, trip-free position
when fully connected. Applicable schemes would be mechanical interlocking of
two breakers so only one can be closed at a time, or, in load center unit substa-
tions, interlocking of the primary switch and secondary main breaker such that
the secondary main must be open before the primary switch can be operated.
Single and double key locks are available. Key locking does not prevent operation
when the breaker is in the test or disconnect position.
Installation and maintenance are made easy with these design features:
• Accessibility
Accessibility to equipment compartments provides easy maintenance of the
breaker cubicle and control circuit elements (located in instrument panel), as well
as convenient inspection of the bolted bus connections.
• Cable space
Conduit entrance area meets NEC requirements. Extended depth frame options
are available in 7" and 14" sizes for applications requiring additional cable space.
Section width can also be increased (from 22" to 30" or 30" to 38") for additional
cable space.
• Breaker lifting device
Installed on top of the switchgear, this rail mounted hoist provides the means for
installing and removing breakers from the equipment. This is a standard feature
on outdoor walk-in construction and an optional feature on indoor construction.
• Control circuit isolation
Control wires are run between compartments in steel riser channels Œ.
Customer terminal blocks are located in metal enclosed wire troughs in the rear
cable area . Intercubicle wiring is run in a wireway on top of the switchgear
where interconnection terminal blocks are located Ž.
Œ

Ž
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