Nader Circuit Breaker

Vacuum circuit breakers use vacuum as the arc extinguishing medium. The pressure in the arc extinguishing chamber under high vacuum is very low (only 1.310-4～1.310-5 Pa), only a few gas molecules exist, the insulation strength between the electrodes is high, and there is fast insulation Intensity r...

(1) The conductive parts and current transformers of the multi-oil circuit breaker are all placed in the iron shell oil tank, and transformer oil is used as the conductive part to insulate the ground, fracture, and phase (three-phase common box type). (2) The structure is simple, the operation is con...

High-voltage circuit breakers can be divided into four major components: conductive part, arc extinguishing part, insulating part, and operating part. The main structure and function of each component: (1) Conductive part. It mainly includes dynamic and static arc contacts, main contacts or intermedi...

The rated operating sequence of high-voltage circuit breakers is generally marked as O-0.3s-CO-180s-CO, or CO-15s CO. O represents an opening operation, and CO represents an opening operation immediately after a closing operation. 0.3s is the no-current interval time of the circuit breaker when the a...

The opening time of a high-voltage circuit breaker refers to the total time that the circuit breaker needs from receiving a trip command (that is, the tripping coil is applied with voltage) to the time the circuit breaker is opened until the three-phase arc is completely extinguished, called the full...