Interlocking device special for switch cabinet

Abstract

An interlocking device special for a KYN10-35kV switch cabinet comprises a grounding shaft and two door leaves, wherein the grounding shaft is arranged on the lower portion of one side of the inner cavity of a cabinet body and can carry out rotary movement, and the door leaves are hinged to the two side walls of a cable chamber on the back portion of the cabinet body respectively. The interlocking device is characterized in that a connecting lever is arranged at the inner end of the grounding shaft, the other end of the connecting lever is hinged to a connecting rod, and the other end of the connecting rod is connected with a plug through a hinge component; the end portion of the plug can carry out reciprocating movement relative to pin holes in a socket, and movable block sheets are arranged on the pin holes of the socket; the inner walls of the two door leaves are respectively provided with a locating sheet with a through hole, and when the two door leaves are closed, the locating sheets push the movable block sheets open to enter the socket, and the through holes are made to coincide with the pin holes. A set of interlocking device is additionally arranged at the inner end of the existing grounding shaft, and the interlocking function of the switching-on and switching-off state of a breaker and the opening and closing state of the cable chamber is achieved through shaft body rotation needed by switching-on and switching-off of the grounding shaft.

Description

[0001] 【Technical field】 [0002] The invention relates to an electric switchgear, in particular to a special interlocking device for a KYN10-35kV switchgear. [0003] 【Background technique】 [0004] Before the invention was made, in order to prevent the vacuum circuit breaker in the KYN10-40.5 high-voltage switchgear from entering the electrified interval by mistake, when the vacuum circuit breaker in the KYN10-40.5 high-voltage switchgear was closing, the back of the panel adopts a sealing plate structure to meet the requirements of "five defenses" and ensure safety. However, this has brought a lot of trouble for maintenance personnel to enter the cable room for daily emergency maintenance, cable wiring and other operations. Therefore, users call for changing the sealing plate structure of the cable room to a door structure under the "five defenses" conditions. However, because the grounding shaft (grounding knife operating shaft) of the cabinet is located at the bottom o...

AI Technical Summary

Problems solved by technology

However, this has brought a lot of trouble for maintenance personnel to enter the cable room for daily emergency maintenance, cable wiring and other operations. Therefore, users call for changing the sealing plate structure of the cable room to a door structure under the condition of meeting the "five defenses"

However, because the grounding shaft (grounding knife operating shaft) of the cabinet is located at the bottom of one side of the cabinet, there is a special structure, so that there is no set of interlocking device suitable for its installation, so it has been unable to meet the requirements of users. User inconvenienced

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