Anti-misoperation device for air switch

Abstract

The invention discloses an air switch anti-misoperation device which is installed on an air switch, the air switch comprises a front shell and a switch wrench extending out of the front shell, the air switch comprises an elastic connecting piece and two pressing pieces, the tail ends of the two pressing pieces are fixed to the two ends of the elastic connecting piece respectively, and the elastic connecting piece is connected with the switch wrench. The distance between the front ends of the two pressing pieces is smaller than the height of the front shell. The air switch can be completely covered, so that the air switch is completely prevented from being switched on by a worker by mistake, the phenomena of personnel injury and equipment burning caused by the fact that the air switch is switched on by mistake during secondary line maintenance are effectively prevented, and potential safety hazards to people and equipment are eliminated. And the electric quantity loss caused by mistakenly touching the air switch is greatly reduced.

Description

technical field [0001] The invention relates to a protection device for electric power construction, in particular to an anti-misoperation device for an air switch. Background technique [0002] Air switch, also known as air circuit breaker. The air switch is a very important electrical appliance in the low-voltage power distribution network and power system. It integrates control and multiple protection functions. Overload and undervoltage protection. [0003] Air switches are widely used in substations for secondary AC and DC power supply protection, secondary voltage protection, etc. It is mainly installed in various screen cabinets such as protective screens, measurement and control screens, DC screens, station screens, etc. in substations, terminal boxes in switch rooms and switch cabinets in switch rooms, and secondary circuits for line pressure transformation. However, the air switch lacks a corresponding warning device when it is in use. When the air switch is und...

AI Technical Summary

Problems solved by technology

One is that when the insulating tape is attached too tightly, it is easy to cause the air switch to refuse to move. If there is a fault in the circuit, the air switch will fail to open, and it will leapfrog the upper air switch to expand the scope of the fault; Adhesive force, improper force will cause the air switch to be disconnected by mistake, which may cause unprotected operation events such as disconnection of the control circuit and power failure of the protection device

[0006] The aluminum prohibition closing warning sign is generally hung on the handle of the primary equipment when the power is cut off, but the design of the air switch itself has no place to hang the sign. The warning sign can only be hung on the ground of the screen cabinet or on the terminal box, and the warning sign It only serves as a warning reminder, and cannot prevent the operator from closing the switch from the hardware, causing great safety hazards to on-site maintenance personnel and electrical equipment

[0007] If someone is sent to guard the site, this management method is time-consuming and laborious, which reduces the overall efficiency and affects the smooth development of the substation

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