ABB VBF Series Instruction For Installation, Service And Maintenance page 33

PART C Operating Mechanism working principle & maintenance
PART C OPERATING MECHANISM WORKING PRINCIPLE AND MAINTENANCE
1.0 Spring charged mechanism
1.1 General
1.2 Construction
1.3 Operating mechanism - Working principle
1.3.1 Electrical spring charging
1.3.2 Manual spring charging
1.4 Breaker Operation
1.4.1 Closing operation
1.4.2 Tripping operation
1.5 Maintenance of Operating Mechanism
1.5.1 Maintenance Schedule.
1.5.2 Trouble shooting guide
1.5.3 Replacement of operating coils
1.5.4 Replacement of micro-switch
1.5.5 Replacement of motor
1.5.6 Replacement of operating mechanism
1.5.7 Recommended spares parts
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