Timing Test for Vacuum Circuit Breaker

VCB for switchgear operation testing What's the test order for VCB operation testing? 1. Vacuum circuit breaker (VCB) mounting into switchgear cubcile testing equipment, VCB in testing position; 2. Draw-in the VCB into running position and testing operation; 3. Draw-out the VCB again into testing position, and testing operation; 4. Put on the front cover, to testing operating again; 5. Finished operating testing, turn off the low voltage control wire; 6. Taken off the VCB from testing equipment,

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