Anti-reversing device of isolation switch

Abstract

The invention discloses an anti-reversing device of an isolation switch. A steering sensor is used for sensing the direction of the main shaft of the isolation switch, and according to the sensing signal, whether the rotation direction of the main shaft is consistent with the preset rotation direction is judged. If the actual rotation direction of the main shaft is opposite to the preset rotation direction, change of a motor power supply of the isolation switch is controlled, so the rotation direction of the motor is changed, and the actual rotation direction of the motor is allowed to be consistent with the preset rotation direction. Thus, the rotation direction of a cross rod of the isolation switch is allowed to be consistent with the operation of actual switching on or switching off of workers. The motor power supply are prevented from being connected wrongly to cause that the rotation direction of the cross rod of the isolation switch is inconsistent with the preset direction and cause a burning down phenomenon of the motor power supply. There is no need for workers to manually detect whether the wiring between the motor and the power supply is correct, so working intensity of the workers is reduced and working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of isolation switch control, in particular to an isolation switch anti-reverse device. Background technique [0002] As the switchgear of the power system, the isolating switch is widely used in various grades of lines, and plays an important role in power distribution. However, during the installation of the isolation switch, when the three-phase busbar of the power supply is connected to the drive motor in the transmission mechanism of the isolation switch, the motor reversal phenomenon caused by the phase sequence mismatch often occurs. Therefore, the current engineering requires the isolation switch after the installation is completed. It is necessary to monitor the power wiring, that is, first turn the isolation switch to the middle position of opening and closing through the manual operation lever, and then tap the "open" or "close" button to check whether the movement direction of the isolation switch...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-reversal device for a disconnector to solve the problem that the rotation direction of the crossbar of the disconnector is inconsistent with the preset direction due to the wrong wiring of the motor power supply, which easily leads to the burning of the motor power supply

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