Double-isolation operation interlocking mechanism for double-bus middle-placed switch cabinet

Abstract

The invention relates to an interlocking device. The technical scheme adopted by the invention is that the double-isolation operation interlocking mechanism for a double-bus middle-placed switch cabinet is characterized by comprising a first operation shaft and a second operation shaft which are respectively linked with main shafts of two isolating switches in the middle-placed switch cabinet, as well as a front-door first operation hole, a front-door second operation hole, a rear-door first operation hole and a rear-door second operation hole which are formed on a front door and a rear door and can be inserted by tools so as to operate the first operation shaft and the second operation shaft; two sets of interlocking devices are arranged between the first operation hole and the second operation hole on the rear door of the middle-placed switch cabinet; and when the second operation shaft is operated on the front door, the first operation hole interlocking device on the rear door can be controlled to lock or unlock the rear door first operation hole. According to the technical scheme, the interlocking mechanism has a compact structure, and can realize mutual constraint of the operation holes on the rear door and the front door and mutual constraint of the upper and the lower operation holes on the same door.

Description

technical field [0001] The invention relates to an interlocking device, in particular to a double-isolation operation interlocking mechanism for central cabinets with double busbars. Background technique [0002] The central switchgear is mainly used for power transmission and distribution, and can also be used for power outage during load maintenance. The central switch cabinet is equipped with an isolation operating mechanism. When the power supply line or equipment fails and normal maintenance, the isolation operating mechanism must be disconnected to protect human safety. [0003] At present, there is no interlocking device between the front and back of the central switchgear that appears on the market or in the data, which is prone to misoperation and seriously affects the life safety of the operator; in addition, when the circuit breaker is in the swing-in working state , both main shafts of isolating switches can be operated, which is also very unreasonable. Conten...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no interlocking device between the front and back of the central switchgear that appears on the market or in the data, which is prone to misoperation and seriously affects the life safety of the operator; in addition, when the circuit breaker is in the swing-in working state , both main shafts of the isolating switch can be operated, which is also very unreasonable

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