circuit breaker

 TESTING AND COMMISSIONING : TESTING OF CIRCUIT BREAKERS  1 . Insulation Resistance Measurement :- By 1KV to 5 KV (DC) Megger. Measure IR value between pole to Earth (when CB is open). IR value of HV CB is very high above 1000 Meg ohm. IR value of control, circuit, trip circuit, relay circuit, and secondary … Read more