35kv switch cabinet isolation baffle electric blocking device

Abstract

The embodiment of the invention provides a 35kv switch cabinet isolation baffle electric blocking device. The device mainly comprises: a body, a closed locking piece, a closed locking hole, an electromagnetic lock, a resetting spring II, an interlocking piece, a line contact isolation baffle, a bus contact isolation baffle, an interlocking pillar, a shaft, a resetting spring I, a lock plunger, a handcart auxiliary switch normally closed contact and an electrified display control relay normally closed contact; the closed locking piece is arranged in the resetting spring I and installed in the body, the closed locking hole and the closed locking piece are integrated, and the lock plunger is inserted into the closed locking hole for closing the lock; the electromagnetic lock and the body are installed on the switch cabinet; the electromagnetic lock is electrified only when the handcart auxiliary switch normally closed contact or the electrified display control relay normally closed contact is closed; and when the electromagnetic lock is out of power, the lock plunger cannot be separated from the closed locking hole, and the interlocking piece and the interlocking piece pillar cannot trip. Compared to the prior art, the 35kv switch cabinet isolation baffle electric blocking device is simple in structure, easy to operate and reliable in production performance, and can prevent workers from opening the isolation baffle of the switch cabinet without permission so as to reject the recapitulation of human electric shock accidents, ensure power transformation safety operation and personal safety and reach the requirement of safe and reliable power supply.

Description

technical field [0001] The invention mainly relates to the locking field of a switch cabinet isolation baffle, and mainly relates to an electrical locking device for a 35kV switch cabinet isolation baffle. Background technique [0002] The 35kV switchgear of the substation is installed with busbar contacts and line contacts respectively. When the handcart switch is overhauled, both the busbar contacts and the line contacts are live. On October 19, 2013, an electric power maintenance company prepared for the overhaul of a 35kV 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 one death and two injuries. In order to prevent the staff from accidentally opening the isolation baffle in the switch cabinet and accidentally touching the live equipment when working in the cabinet, rejecting the recurrence of similar personal electric shock accidents, and e...

AI Technical Summary

Problems solved by technology

[0002] The 35kV switchgear of the substation is installed with busbar contacts and line contacts respectively. When the handcart switch is overhauled, both the busbar contacts and the line contacts are live. On October 19, 2013, an electric power maintenance company prepared for the overhaul of a 35kV 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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