ABB AMVAC Technical Manual page 5

AMVAC breaker
Construction
Electronic control board
The electronic control board technology for the AMVAC breaker
provides improved reliability due to its self-monitoring functions
and features. Featuring coil monitoring, sensor monitoring,
optional under-voltage trip and optional energy failure trip, the
AMVAC breaker is customizable for any application.
By managing the 45 ms current limited pulse delivered to the
mechanism by the on-board capacitors, the electronic control
board eliminates one cause of common failures in typical spring
mechanism breakers – the burning of trip and close coils.
1 Electronic control board| 2 Breaker lift truck
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Breaker racking truck
ABB's breaker racking truck for switchgear is integral to the
breaker itself in lieu of being inside the switchgear breaker cell.
Rated for 180 foot-pounds of torque, the breaker racking truck
exceeds the industry standard of 50-60 foot-pounds by a factor
of three, greatly reducing the possibility of an over-torque con-
dition.
The breaker racking truck is rated for 1000 rack in-rack out
operations, exceeding the ANSI Standard of 500 operations.
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AMVAC | SafeGear HD 5