Isolating switch

Abstract

The invention provides an isolating switch. The isolating switch comprises a first contact arm which is suitable for being electrically connected with a first contact and which is provided with a first contact part, a second contact arm which is suitable for being electrically connected with a second contact and which is provided with a second contact part, a grounding structure and a drive mechanism; the first contact and the second contact are a pair of movable and static contacts which are oppositely disposed; and the drive mechanism is used to drive the first contact arm so that the first contact part and an incoming line bus are connected or disconnected, and, after the first contact part and the incoming line bus are disconnected, the first contact arm is continuously driven until the first contact arm is connected with the grounding structure, and then the first contact arm is grounded; and the drive mechanism is used to drive the second contact arm so that the second contact part and an outgoing line bus are connected or disconnected, and, after the second contact part and the outgoing line bus are disconnected, the second contact arm is continuously driven until the second contact arm is connected with the grounding structure, and then the second contact arm is grounded. After the isolating switch is opened, the first contact arm and the second contact arm are not electrified, and people are very safe when repair and maintenance are performed.

Description

technical field [0001] The invention relates to the technical field of isolating switches for high-voltage vacuum circuit breakers, in particular to an isolating switch. Background technique [0002] High-voltage vacuum circuit breakers are electrical equipment often used in high-voltage power distribution systems. They usually include a circuit breaker and an isolation switch. The function of the circuit breaker is to close the circuit and open the circuit, and it is used for closing The contacts that connect the circuit or open the circuit are installed in the vacuum interrupter, and the arc generated when the contact is closed or opened can be reliably broken in the interrupter, and the safety performance is very high. The function of the isolation knife switch is to establish a reliable insulation gap and separate the lines with an obvious disconnection point to ensure the safety of operators and equipment. When operating the vacuum circuit breaker to open, you need to ...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the isolation knife switch in the prior art. When the switch is opened, the pole or copper bar is still electrically connected to the incoming busbar, and there is only one disconnection between the pole and the copper bar. point, leading to poor safety technical defects, thus providing a good safety performance isolating switch

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