Siemens 3AH Manuale di istruzioni - Pagina 8

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Vacuum Interrupter/Operator Description

The Type 3AH vacu u m circuit breaker operator is intended

for application in a d rawout truck for use in medium voltage

metal-clad switchgear. The 3AH circuit breaker conforms

to the requirements of ANSI Standards, including C37.20.2,

C37.04, C37.06, C37.09 and C37.010.

The circuit breaker consist of three vacuum interrupters, a

stored energy operating mechanism, necessary electrical

control s and interlock devices, disconnect devices to

Pole Head ---- --,

Upper Camectbn Pad

Lov.er Connectbn Pad

Pole

Figure 2. Vacuum Circuit Breaker Module

connect the circuit breaker to both primary and control

power and an operator housing. In a typical installation in

a drawout truck, insulating barriers a re located between the

vacuum interrupters and along the sides.

This section describes the operation of each major subas

sembly as an aid in the operation, instal lation, maintenance

and repair of the circuit breaker.