GE Industrial Solutions Entellisys Installation - Manual (Page 15)

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Entellisys Low Voltage Switchgear
Chapter 3. Description
All of the primary circuit switching and protective devices,
Entellisys instrumentation, control fuses, and instrument
transformers are mounted in the enclosure. The breaker
compartments include drawout rails, stationary breaker
contacts, interlocks, and EntelliGuard Messengers. The
breakers are provided with self-aligning primary and
secondary disconnect contacts and a breaker mechanism
locking unit. The individual sections, compartments, and
devices are described in the following paragraphs.
Fig. 3-2 is an outline of a typical single-ended load center
unit substation illustrating the nomenclature used for all
equipment.
Fig. 3-2. Outline of a typical Entellisys Load Center Unit Substation