Brief Introduction of High Voltage Vacuum Circuit Breaker

The high-voltage vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance for arc extinguishing. The application in the network is more popular.

The high-voltage vacuum circuit breaker mainly includes three parts: vacuum interrupter, electromagnetic or spring operating mechanism, bracket and other components.

The following is a detailed introduction to the basic terms and parts:

High-voltage vacuum circuit breaker technical standard Vacuum circuit breaker has developed vigorously in my country in the past ten years, and it is still in the ascendant. The products have developed from several varieties of ZN1 to ZN5 in the past to dozens of models and varieties. The rated current reaches 5000A, the breaking current reaches a good level of 50kA, and the voltage has reached 35kV.

High voltage vacuum circuit breaker energy storage and manual opening

1. Energy storage of high voltage vacuum circuit breaker:

Close the auxiliary power switch in the intelligent control unit to charge the battery in the intelligent control box. If the battery is already charged, close the battery switch in the intelligent control box and wait for 20s. At this time, the energy storage capacitor is charged and the circuit breaker is in Ready to operate state.

2. Manual opening operation of high voltage vacuum circuit breaker:

When the vacuum circuit breaker is in the closing position, hook the pull ring on the manual opening handle of the circuit breaker with an insulating operating rod, and pull it downward, the circuit breaker can be opened, and still has a certain opening speed, which can ensure The circuit breaker can reliably interrupt the rated load current.