Vacuum circuit breaker test

The instrumentation is used to diagnose the vacuum contained in the “AMPOLLEs” during normal maintenance of the circuit breaker both in the field and on site.
The test consists of applying a voltage between 10 kv and 75 kv to the ends of the ampoule, with a test time ranging from 5 seconds to 2 minutes.
During the test time, the instrumentation checks the pre-set leakage current value, if this value is NOT exceeded, the instrumentation validates the test.
Vacuum monitoring, during routine maintenance of the equipment, is implemented to determine the efficiency of the ampoule itself.