Planning Of Inspection And Maintenance; Inspection Interval - Siemens SENTRON 3WA1 Manual

Inspection and maintenance

5.3 Planning of inspection and maintenance

5.3 Planning of inspection and maintenance
5.3.1

Inspection interval

Malfunction due to insufficient inspection or maintenance
The circuit breaker may not function properly if inspection intervals are not adhered to
or if maintenance measures are not performed.
It is absolutely necessary to adhere to the prescribed inspection and maintenance
intervals and the instructions on repair and replacement in order to avoid personal
injury and damage to equipment.
The operator defines the inspection intervals within the following constraints based on
the operating conditions of the circuit breaker:
• At least once a year.
• After each short-circuit trip
• After five overload trips
• After 1000 rated current trips up to 1000 V
• After 500 rated current trips at 1150 V
390
WARNING
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06