Siemens 3AH Anleitungen, Installation, Betrieb, Wartung - Seite 7
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Interrupter/Operator Description
Introduction
The Type 3AH vacuum circuit breaker operator is intended
for application in a drawout truck for use in medium volt-
age metal-clad switchgear. The 3AH circuit breaker con-
forms to the requirements of ANSI Standards, including
C37.20.2, C37.04, C37.06, C37.09 and C37.010.
3AH circuit breakers consist of three vacuum interrupters,
a stored energy operating mechanism, necessary electri-
cal controls and interlock devices, disconnect devices to
Figure 2. 3AH Vacuum Circuit Breaker Module
connect the breaker to both primary and control power
and an operator housing. In a typical installation in a
drawout truck, insulating barriers are located between the
vacuum interrupters and along the sides.
This section describes the operation of each major sub-
assembly as an aid in the operation, installation, mainte-
nance and repair of the 3AH vacuum circuit breaker.
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