Universal change-over switch capable of being rapidly replaced

Abstract

The invention provides a universal change-over switch capable of being rapidly replaced, an existing universal change-over switch is improved into an aviation plug type universal change-over switch by adopting a mode of additionally installing the shell, and the purpose that the universal change-over switch is safely, rapidly and reliably replaced by plugging and unplugging the male head and the female head under the condition that normal power supply is not affected is achieved. The switch is convenient and visual, is high in safety and reliability, and is not likely to cause DC grounding or short circuit. According to the invention, human input is reduced, the fault processing efficiency is higher, the workload of workers is reduced, the power supply reliability of a power grid is ensured, and safe and stable operation of the power grid is facilitated.

Description

technical field [0001] The invention belongs to the technical field of electrical connectors, and in particular relates to a quickly replaceable universal transfer switch. Background technique [0002] The universal transfer switch is a multi-gear, multi-stage, multi-circuit master electrical appliance. When the operating handle is rotated, the cam inside the switch is driven to rotate, so that the contacts are closed or disconnected in a prescribed order. It is mainly suitable for AC 50Hz, rated working voltage 380V and below, DC voltage 220V and below, rated current 160A electrical circuit, the universal switch is mainly used for the conversion of various control circuits, commutation measurement control of voltmeters and ammeters, and distribution device circuits. Conversion and remote control, etc., are often used in substations to open and close circuit breakers (switches), and operate remotely / locally. [0003] The universal transfer switch is a multi-circuit control ...

AI Technical Summary

Problems solved by technology

[0008] Substation operators need to operate the switch or knife switch through the universal transfer switch. The operating frequency is relatively high, and some intervals have a long operating life, which makes the universal transfer switch easy to damage, which affects the reliable operation of the power grid and the normal operation of maintenance personnel.

According to the investigation and statistics, the main reasons for the damage of the universal transfer switch are as follows: 1) The rotating part of the universal transfer switch is stuck to the rotating shaft and cannot rotate correctly; 2) The traffic light at the upper end of the universal transfer switch is damaged; 3) The rotating shaft is damaged; 4 ) The wiring pile head of the universal transfer switch slipped and the wiring fell off; 5) The spring connected to the rotating shaft of the universal transfer switch was damaged

Because the universal transfer switch is connected in series in the operation circuit, once the universal transfer switch fails, it must be replaced with a power outage. The replacement process has a narrow space, a long replacement time, and there is a hidden danger of accidentally touching the wires.

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