Mechanical interlocking device of high-voltage circuit-breaker and high-voltage disconnecting switch

Abstract

The invention relates to a mechanical interlocking device of a high-voltage circuit-breaker and a high-voltage disconnecting switch, comprising a high-voltage circuit-breaker body which is provided with a coilout end of a phase line for realizing the disjunction and switching-on of the phase where the high-voltage circuit-breaker body is located, a high-voltage disconnecting switch body connectedwith the high-voltage circuit-breaker body and provided with a coil-in connection block of a phase line and a mechanical interlocking device which is arranged between the high-voltage circuit-breakerbody and the high-voltage disconnecting switch body. In the invention, when the high-voltage circuit-breaker body is in an on-state, the switching-off and disjunction actions which can not be generated by the high-voltage disconnecting switch body is realized by mechanical actions.

Description

technical field [0001] The invention relates to a high-voltage power protection device, in particular to a mechanical high-voltage circuit breaker and a high-voltage isolating switch interlocking device. Background technique [0002] Among the high-voltage power equipment used on high-voltage lines, the high-voltage isolation switch is a relatively important device with obvious segmental gaps. Therefore, it is mainly used to isolate high-voltage power supplies, ensure safe maintenance, and can switch certain small currents. It does not have a special arc extinguishing device, so it is not allowed to cut off the normal composite power supply, let alone cut off the short-circuit current. Because the disconnector has a clear section gap, it is usually used in conjunction with a high voltage circuit breaker. [0003] According to the place where the high-voltage isolating switch is used, the high-voltage isolating switch can be divided into two categories: indoor and outdoor. ...

AI Technical Summary

Problems solved by technology

[0004] However, during the configuration and operation of some equipment, the staff of the electric power department may sometimes fail to adopt a safe operation sequence for some reason, resulting in danger, that is, when the high-voltage circuit breaker is not in the disconnected state, it will be The high-voltage isolating switch is disconnected, thereby generating high-voltage arc light, which greatly endangers the safety of power equipment and operators

[0005] At the same time, the existing high-voltage circuit breaker cannot handle the state of short-circuit fault in the power line from a functional point of view, so it is easy to burn out the corresponding electric equipment; Electrical equipment and high-voltage circuit breakers themselves cause great damage, and also affect the safety of electricity

Images