The common reasons for the burnout of the opening and closing coil of the vacuum circuit breaker are as follows

Fault phenomenon and cause The vacuum circuit breaker is characterized by arc extinguishing in vacuum, but it is not possible under any vacuum degree, but has good insulation and arc extinguishing performance within a certain vacuum degree range.

Pull the mechanism to manually charge the energy storage ring, or give the mechanism an electric energy storage signal, the motor drives the energy storage arm to store energy for the energy storage spring, and maintains this energy through the energy storage holding link.

The shielding system of the vacuum interrupter is mainly composed of shielding cylinder, shielding cover and other parts.

The bellows of the vacuum interrupter is mainly responsible for ensuring that the moving electrode moves within a certain range and maintains a high vacuum for a long time, and ensures that the vacuum interrupter has a high mechanical life.

The fixed conductive rod, the fixed arc surface, the fixed contact, the movable contact, the movable arc surface and the movable conductive rod constitute the conduction system of the arc extinguishing chamber.