SecoGear – Installation, Operation and Maintenance Manual 16 of 56Circuit Breaker CompartmentThe circuit breaker compartment is designed to house GESecoVac vacuum circuit breakers. These compartments can bestacked for two-high switchgear configurations. Each circuitbreaker compartment has two physical positions, CONNECTEDand DISCONNECTED/TEST.All of the protective devices, metering devices, secondarycontrol, and control fuses are located in the front area of thecircuit breaker compartment or they are located on the frontcompartment door.The compartment includes guide rails, stationary primarycontacts, automatic shutters, interlocks, MOC and TOC switchesand necessary control and indicating devices.Window-type current transformers for protection and meteringcircuits are mounted on the insulated bushings containing thefixed primary contacts.Closed-door DrawoutClosed-door drawout is a standard construction feature onall circuit breaker compartments (Figure 3-2). The circuitbreaker compartment doors remain closed and latched whilethe circuit breaker is racked to or from the CONNECTED andDISCONNECTED/TEST positions.3. SecoGear ConstructionThis section describes GE SecoGear Medium VoltageSwitchgear, along with the functions of the electrical andmechanical systems. Figure 3-1 contains a typical side view ofdual feeder section, showing the major isolated compartmentsas well as circuit breakers, CTs, and optional Surge Arrestors.The switchgear consists of modules containing circuit breakersand auxiliary equipment, which are stacked two high to formvertical sections. Sections are arranged side by side andconnected mechanically and electrically to form completeswitchgear assemblies.Figure 3-1: Section ContentsA = Main Busbar CompartmentB = Circuit Breaker CompartmentC = Cable CompartmentABBCCOptional Surge Arresters