Air circuit breakers and magnetic blow pilot project cycle and standard serial

Air circuit breakers  mcb circuit breaker  blow pilot project cycle and standard serial number and description of the project cycle test standard 1 40.5kV and above support ceramic casing and lift lever leakage current (a) when the transfer; (2) 1 to 3 years; (3) after overhaul (1) transfer: 35kV air above the pillars and magnetic blow  power transformers  porcelain sets and DC leakage current of each fracture test voltage shall be 40kV, and the high-pressure side of the leak when reading 1min current value, the measured leakage current value should not be greater than 10μA; 220kV leakage current value of not more than 5μA.