Misoperation-preventing interlocking apparatus

Abstract

The invention discloses a misoperation-preventing interlocking apparatus. A grounding switch is connected with a grounding switch rotary shaft through a grounding switch connecting lever; a main bent plate is arranged in the cabinet body; the main bent plate moves up and down to drive an interlocking rotary shaft to rotate; the main bent plate is provided with a grounding switch rotary shaft baffle; when the main bent plate is positioned at the upper position, the front end part of the grounding switch rotary shaft is blocked by the grounding switch rotary shaft baffle; when the main bent plate is positioned at the lower position, the front end part of the grounding switch rotary shaft is exposed; the interlocking rotary shaft is equipped with an interlocking baffle and an interlocking propping plate which rotate along with the interlocking rotary shaft; and a handcart of a circuit breaker is provided with a handcart interlocking bent plate and a handcart limiting tongue-shaped plate. The misoperation-preventing interlocking apparatus provided by the invention is high in integration function, less in parts, compact in structure, and small in occupied space; the interlocking schemes are well arranged and closely linked, so that the interlocking reliability is high; and in addition, the ''five preventions'' interlocking requirement of the switch equipment is fully satisfied, so that the interlocking apparatus is high in safety in use.

Description

technical field [0001] The invention relates to the technical field of interlocking mechanisms of switchgear, in particular to an interlocking device for preventing misoperation. Background technique [0002] High-voltage switchgear is commonly used electrical equipment in the field of grid power supply. High-voltage switchgear should be equipped with circuit breakers to prevent mis-opening and closing, to prevent opening and closing isolating switches (or isolating plugs) with loads, and to prevent transmission with grounding switches (or grounding wires). "Five defenses" functions such as preventing electrification and closing the grounding knife switch (or connecting the grounding wire). At present, the commonly used high-voltage power supply matching switch is the handcart vacuum circuit breaker, and this series of circuit breakers is used in conjunction with the metal armored removable switchgear. [0003] Most of the current interlocking devices are equipped with two ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology, provide an interlock device for preventing misoperation, and solve the problem that the traditional interlock device in the current technology has a complex structure, many parts, and takes up a large space. It is easy to interfere with the parts of the mechanism itself, causing problems such as live grounding and other misoperations

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