Cabinet door interlocking device for switch equipment and switch equipment

Abstract

The invention discloses a cabinet door interlocking device for switch equipment and the switch equipment. The interlocking device comprises an interlocking device box and an interlocking mechanism fixed in the interlocking device box; the interlocking mechanism comprises an opening limiting plate, an interlocking plate, a position switch, an interlocking limiting block, a grounding / isolating switch interlocking rod and a circuit breaker mechanism interlocking rod; the opening limiting plate, the interlocking plate and the position switch are arranged in sequence; the interlocking limiting block is arranged near the interlocking plate, and the interlocking plate limits the interlocking limiting block; the interlocking plate is adjacent to the grounding / disconnecting switch interlocking rod and the circuit breaker mechanism interlocking rod, and the grounding / disconnecting switch interlocking rod and the circuit breaker mechanism interlocking rod limit the interlocking plate; the rotation of the interlocking limiting block limits the cabinet door or relieves the limit of the cabinet door, so that the cabinet door is in an openable state or a non-openable state. According to the interlocking device, forward and reverse locking integrated modular design can be achieved, and the effects that a forward locking device is high in strength and reverse locking is reliable are achieved.

Description

technical field

[0001] The invention relates to the field of electrical switchgear, in particular to a cabinet door interlocking device system and switchgear for switchgear. Background technique

[0002] Five preventions usually refers to the abbreviation of five anti-mistake functions for high-voltage electrical equipment to ensure personal safety, and is one of the important measures for electric safety. The specific connotations of the five preventions are: 1. Prevent opening and closing of the isolating switch with load; 2. Prevent wrong opening and closing of the circuit breaker; into the electrified interval.

[0003] In switchgear, the main circuit consists of a disconnector or earthing switch or a circuit breaker. In the main circuit system, the cable room door, circuit breaker, disconnector or grounding switch must be interlocked to reflect the above five defenses.

[0004] At present, most of the measures taken by the five defenses are to install live indicators...

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