Siemens 3AH Instrukcja obsługi - Strona 8
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Vacuum Interrupter/Operator Description
Introduction
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.
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