Vacuum circuit breaker: AC withstand voltage test, loop resistance test, mechanical characteristic test, low voltage opening and closing test.
SF6 circuit breaker: AC withstand voltage test, loop resistance test, mechanical characteristic test, low voltage opening and closing test, SF6 water test, SF6 density relay verification report, secondary circuit withstand voltage test.
What project tests should be carried out after circuit breaker overhaul
1) Opening and closing time.
2) Opening and closing speed.
3) Measure the insulation resistance.
4) Measure the contact resistance.
5) The oil-rich circuit breaker measures the casing dielectric loss and the leakage test of the oil-less circuit breaker.
6) AC withstand voltage.
7) Insulating oil test.
8) Operation test.
