Users Manual
Table Of Contents
- 1 Introduction
- 2 Description
Description
2.2 Circuit breakers and non-automatic circuit breakers
3WA Air Circuit Breakers
Equipment Manual, 05/2021, 92310000002-03
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2.2.4.2 Closing and opening
Note
The minimum time difference between ON and OFF command should be at least 100 ms.
Conditions for ready-to-close status
The conditions for the breaker’s ready-to-close status can be found in Chapter Commissioning
checklist (Page 43).
The circuit breaker is ready for closing when the READY window displays OK.
Automatically charging the stored-energy spring
If a spring charging motor is integrated, immediately after switching on, the stored-energy
spring is charged again by the spring charging motor. This can be prevented by an optional
motor disconnect switch.
Switching on and off on the operator panel
Switching on and off without spring charging motor and motor disconnect switch