Electrical locking device of 10kV handcart switch isolation baffle

Abstract

An embodiment of the present invention provides an electrical locking device of a 10kV handcart switch isolation baffle. The electrical locking device mainly comprises a body, a locking piece, a locking hole, an electromagnetic lock, a reset spring II, an interlocking tablet, a line contact isolation baffle, a bus bar contact isolation baffle, an interlocking post, a shaft, a reset spring I, a locking bolt, a handcart auxiliary switch normally closed contact, and a live display control relay normally closed contact. The locking piece is disposed in the reset spring I and is mounted in the body. The locking hole and the locking piece are integral. The locking bolt is inserted into the locking hole so as to realize locking. The electromagnetic lock and the body are mounted on a switch cabinet. The electromagnetic lock is live only when the handcart auxiliary switch normally closed contact or the live display control relay normally closed contact is closed. When the electromagnetic lock is dead, the locking bolt and the locking hole cannot be separated, and the interlocking tablet and the interlocking post cannot be released. Compared with the prior art, the electrical locking device of the 10kV handcart switch isolation baffle has a simple structure, is convenient to operate, has reliable performance, can prevent an operator from opening the isolation baffle in the switch cabinet arbitrarily so as to prevent electric shock accidents, ensures safe running of power transformation and personal safety, and meets a demand of providing power safely and reliably.

Description

technical field [0001] The invention mainly relates to the field of handcart switch isolation baffle blocking, in particular to an electrical blocking device for a 10kV handcart switch isolation baffle. Background technique [0002] The busbar contacts and line contacts are installed in the 10kV switchgear of the substation. When the handcart switch is overhauled, the busbar contacts and the line contacts are charged. On October 19, 2013, a power maintenance company prepared for the overhaul of the 10kV switchgear in a substation. During work, Chen × opened the isolation baffle in the switch cabinet without authorization, resulting in a personal electric shock accident, causing 1 death and 2 injuries. In order to prevent the staff from opening the isolation baffles in the switchgear without accidentally touching the live equipment when working in the cabinet, rejecting the recurrence of similar personal electric shock accidents, and ensuring the personal and equipment safety...

AI Technical Summary

Problems solved by technology

[0002] The busbar contacts and line contacts are respectively installed in the 10kV switchgear of the substation. When the handcart switch is overhauled, the busbar contacts and the line contacts are both live. On October 19, 2013, an electric power maintenance company prepared for the overhaul of a 10kV switchgear in a substation. While working, Chen × opened the isolation baffle in the switch cabinet without authorization, causing a personal electric shock accident, resulting in 1 death and 2 injuries

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