What is the use of high voltage vacuum circuit breaker?

"Vacuum circuit breaker" is named because both 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 maintenance required for arc extinguishing.It is widely used in the distribution network。

The vacuum circuit breaker is an indoor power distribution device in a 3~10kV, 50Hz three-phase AC system，It can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants and substations，Especially suitable for use places that require no oil, less maintenance and frequent operations，Vacuum circuit breakers can be configured in central cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment. Vacuum circuit breakers are divided into high voltage and low voltage,The following are its two important roles：

1.Control：

According to the needs of grid operation，Use a high-voltage vacuum circuit breaker to put part of the power equipment or lines into or out of operation。This effect is called control。

2.Protective effects：

High-voltage vacuum circuit breakers can also quickly remove faulty parts from the grid in the event of a power line or equipment failure。Guarantee the normal operation of fault-free parts of the grid。This effect is called protection。 Anyhow,High-voltage vacuun circuit breakers can open, close and carry the normal current of running lines.It can also carry, make and break the specified abnormal current within the specified time.,such as overload current and short circuit current.

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