Nader Circuit Breaker

The high-voltage circuit breaker (or high-voltage switch) can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the function of the relay protection device when the system fails. The perf...

At present, circuit breakers have very little maintenance during normal use, especially SF6 circuit breakers, vacuum circuit breakers, etc., which are basically maintenance-free, and the body and hydraulic mechanism are not disassembled. However, the site still needs regular maintenance in accordance...

Because the faults of high-voltage circuit breakers are not only diverse, they are also cumbersome and complicated. Therefore, in order to find the fault points and specific causes, scientific and appropriate methods must be used for diagnosis, and the diagnosis must be based on actual conditions. 1....

Vacuum circuit breakers, like other types of circuit breakers, are inevitably subjected to the test of electricity, heat, machinery, atmosphere and time during operation. Therefore, the vacuum circuit breaker should meet the following requirements: (1) The insulation is safe and reliable. Vacuum circ...

The rated voltage of a high-voltage circuit breaker refers to the upper limit of the highest voltage of the power system where the circuit breaker is located. In order to achieve consistency with the IEC standard, the my country Standards Committee proposed in 1994 to change the highest voltage used ...