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SecoGear – Installation, Operation and Maintenance Manual 16 of 56

Circuit Breaker Compartment

The circuit breaker compartment is designed to house GE

SecoVac vacuum circuit breakers. These compartments can be

stacked for two-high switchgear configurations. Each circuit

breaker compartment has two physical positions, CONNECTED

and DISCONNECTED/TEST.

All of the protective devices, metering devices, secondary

control, and control fuses are located in the front area of the

circuit breaker compartment or they are located on the front

compartment door.

The compartment includes guide rails, stationary primary

contacts, automatic shutters, interlocks, MOC and TOC switches

and necessary control and indicating devices.

Window-type current transformers for protection and metering

circuits are mounted on the insulated bushings containing the

fixed primary contacts.

Closed-door Drawout

Closed-door drawout is a standard construction feature on

all circuit breaker compartments (Figure 3-2). The circuit

breaker compartment doors remain closed and latched while

the circuit breaker is racked to or from the CONNECTED and

DISCONNECTED/TEST positions.

3. SecoGear Construction

This section describes GE SecoGear Medium Voltage

Switchgear, along with the functions of the electrical and

mechanical systems. Figure 3-1 contains a typical side view of

dual feeder section, showing the major isolated compartments

as well as circuit breakers, CTs, and optional Surge Arrestors.

The switchgear consists of modules containing circuit breakers

and auxiliary equipment, which are stacked two high to form

vertical sections. Sections are arranged side by side and

connected mechanically and electrically to form complete

switchgear assemblies.

Figure 3-1: Section Contents

A = Main Busbar Compartment

B = Circuit Breaker Compartment

C = Cable Compartment

Optional Surge Arresters

GE SecoGear User Manual

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