Low-voltage switch cabinet 1/2 drawer unit capable of effectively preventing mis-operation

Abstract

The invention provides a low-voltage switch cabinet 1 / 2 drawer unit (9) capable of effectively preventing mis-operation. The 1 / 2 drawer unit (9) is arranged on a holding plate (5) of a low-voltage switch cabinet. The holding plate, a drawer main plate (6) and a drawer panel (7) form a framework. A switch handle (8) is installed on the drawer panel. An operation through hole is arranged in the drawer panel. An operation module (1), a pushing module (2), an isolation limiting module (3) and a switch linkage module (4) are installed in the 1 / 2 drawer unit (9). The operation module is fixed on the back of the drawer panel. The pushing module is arranged on the drawer main plate and one end of the pushing module is connected with the operation module. The isolation limiting module is arranged under the operation module. The switch linkage module is arranged behind the drawer panel and in the position opposite to the operation module. According to the invention, a three-position switching function and orderly operation of all states of the 1 / 2 drawer unit can be achieved; and a locking function is arranged in the isolation position, so it is ensured that when a switch is in a closing state, switching in different positions cannot be performed and load separation is avoided.

Description

technical field [0001] The invention relates to a drawer unit of a low-voltage power distribution switch cabinet in the electric power industry, in particular to a 1 / 2 drawer unit of a low-voltage switch cabinet that can effectively prevent misoperation. Background technique [0002] Low-voltage switchgear is a control equipment used in the fields of industry, tertiary industry and infrastructure construction. It is commonly used in petrochemical, metallurgical manufacturing, textile processing and other industries, and is used for control and protection of power transmission, power distribution and power conversion. There are many classification methods for low-voltage switchgear, such as classification according to different structures or classification according to different connection forms. The drawer cabinet in the low-voltage switchgear, as the terminal electrical equipment, is the hub of power distribution, control, conversion, protection and measurement, which is d...

AI Technical Summary

Problems solved by technology

However, the existing drawer technology does not have an obvious specification for the operation of the three-position switch, and there is no interlock mechanism to prevent the occurrence of misoperation

Modern switchgear basically realizes modular design. The drawer units are basically the same in shape but may have completely different functions or load capacities. Different drawer units may cause safety accidents due to mixed use. 2 or 1 / 4 units are especially noticeable

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