Vacuum load switch

Vacuum load switch is a kind of electrical equipment, mainly used to monitor the current change in the circuit and cut off the circuit in the event of overload or short circuit.

Category: Vacuum load switch

key word : Vacuum load switch

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Product Details

The vacuum load switch is a variant of a high-voltage circuit breaker, usually used in DC or AC high-voltage circuits. Its main function is to protect the circuit. When the current in the circuit exceeds the set current value, the vacuum load switch will immediately cut off the circuit to prevent safety accidents caused by circuit overload or short circuit.

　　Working principle

The working principle of the vacuum load switch is based on the load switching characteristics of the arc in vacuum. When the current passes through the load, the current generates physical pressure on the load. This pressure will cause the air or other media in the current to ionize in a very short time, resulting in an arc. However, in vacuum, due to the lack of air, the arc will be quickly extinguished, thereby preventing the continuous damage and heat loss of the arc, ensuring that the vacuum load switch has a high cut-off capacity and a long service life.

　　Features

Long service life: Due to the existence of vacuum medium, the vacuum load switch has a long service life.

Switch contacts maintenance-free: reduce maintenance costs and workload.

Low operating overvoltage: improves the stability and safety of the power system.

Operation safety: Due to its unique working principle and structure, the vacuum load switch has high safety during operation.

　　Application Scenarios

Vacuum load switches are mainly used in the following scenarios:

High-voltage circuit protection: In high-voltage circuits, vacuum load switches can effectively protect circuits and equipment to prevent accidents.

Substation: In the substation, the vacuum load switch is used to control and protect the stable operation of the power grid.

Industrial power transmission: Vacuum load switches also play an important role in the production of electrical equipment and machinery and equipment in industrial and mining enterprises.

Railway electrification: In railway electrification systems, vacuum load switches are used to control and protect the power supply.

Mining industrial and mining enterprises: In these enterprises, vacuum load switches are also used to protect circuits and equipment.