What testing items will be done for Vacuum Circuit Breaker and its recloser?

Now introduce 100% finished product testing:

Finished product test items mainly include the following:

1. Circuit resistance;

2. Mechanical operating performance;

3. The accuracy of the Current Transformer & Voltage Transformer, because when the vacuum circuit breaker is combined with the FTU re-closer controller, it’s signal will be provided by the Current transformer & Voltage Transformer;

4. Power frequency withstanding voltage;