Function of high-voltage disconnector

March 28, 2023

1. The high-voltage isolation switch can ensure the safety of high-voltage electrical appliances and devices during maintenance work, and can isolate voltage. It cannot be used to cut off or input load current or break short circuit current. It can only be used for certain switching operations that do not generate strong arcs, which means it has no arc extinguishing function.

2. According to the different installation locations of high-voltage disconnectors, they can be divided into indoor and outdoor types. According to the number of insulation poles, they can be divided into single column type, double column type, and three column type. Optional equipment is available for each voltage level.

3. The contacts of the high-voltage disconnector are all exposed to the air, with obvious disconnection points. The disconnector has no arc extinguishing device, so it cannot be used to cut off the load current or short circuit current. Otherwise, under the action of high voltage, the disconnection point will generate a strong arc, which is difficult to extinguish by itself, and may even cause arcing.

4. High voltage disconnectors can also be used to switch certain circuits to change the operation mode of the system. For example, in a dual bus circuit, high voltage disconnectors can be used to switch the operating circuit from one bus to another.

Single Pole 10kv Ac Pole Switch

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