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DEH-41473
Summary Description
General Electric low-voltage switchgear is a freestanding
assembly of metal-enclosed sections containing low-voltage
power circuit breakers, bus bars, cable termination provisions,
auxiliary power circuit protective devices, controls, and
instrumentation.
All of the primary circuit switching and protective devices,
secondary control and metering devices, control fuses,
instrument transformers, and instrumentation are mounted in
the enclosure.
The minimum ceiling space required for an assembly of arc
resistant low-voltage switchgear is 10 feet from the base of
the assembly.
Figure 3.2 Outline of typical arc resistant low-voltage switchgear (front view)
Exhaust Plenum Section, 38" Stack
(1)
Exhaust Plenum Section, 30" Stack
(2)
Exhaust Plenum Section, 22" Stack
(3)
Transition Adaptor Section (Typical)
(4)
End Cap
(5)
Exhaust Plenum End Portal
(6)
Exhaust Plenum Access Cover (Typical)
(7)
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Courtesy of NationalSwitchgear.com
AKD-20 AR / Entellisys AR Low-voltage Switchgear
Section 3. Switchgear Description
The breaker compartments include draw-out rails, stationary
breaker contacts, interlocks, and necessary control and
indicating devices. The breakers are provided with self-
aligning primary and secondary disconnecting contacts,
breaker locking mechanism, and integral trip unit. The
individual sections, compartments, and devices are described
in the following paragraphs. Figure 3.2 and Figure 3.3 provide
an outline of a typical single-ended load center illustrating the
nomenclature used for all equipment.
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