switch disconnector

2 year ago

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Henan New Electric Power Co.,Ltd.

 1 min year

Video details

The high-voltage isolation switch ensures the safety of high-voltage electrical appliances and devices during maintenance work, playing the role of isolating voltage. It cannot be used to cut off, input load current, or break short-circuit current, but can only be used for certain switching operations that do not generate strong arcs, which means it does not have arc extinguishing function; According to different installation locations, it can be divided into indoor and outdoor types. According to the number of insulation pillars, it can be divided into single column, double column, and three column types. Each voltage level has optional equipment. It is also possible to reliably isolate the parts in the high-voltage distribution device that require power outage from the live parts to ensure the safety of maintenance work. The contacts of the high-voltage isolation switch are all exposed in the air, with obvious disconnection points. The isolation switch does not have an arc extinguishing device, so it cannot be used to cut off 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 on its own, and may even cause arcing (phase to ground or phase to phase short circuit), burn equipment, and endanger personal safety, This is a serious accident called "pulling the isolation switch with load". High voltage isolation switches can also be used to switch certain circuits to change the operation mode of the system. For example, in a dual bus circuit, a high-voltage isolation switch can be used to switch the running circuit from one bus to another.

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Henan New Electric Power Co.,Ltd.

 Audited supplier

1 min

Address: Zhengzhou, China

Main Product: Oil Immersed Transformer, Dry Type Transformer, Isolation Transformer, Auto Transformer , Control Transformer, Distribution Transformer

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