Circuit breaker interlocking device

Abstract

The invention discloses a circuit breaker interlocking device which comprises a closing shaft, a closing baffle block, a closing crank arm, a closing bent plate and a latching electromagnet; the closing shaft is connected with the closing baffle block and the closing crank arm; the closing crank arm and the crank bent plate are connected through an articulated shaft; the closing bent plate is provided with a guide long hole and a baffle plate; the guide long hole is internally provided with a spacing screw rod; a latching electromagnet is arranged on the baffle plate of the closing bent plate along the motion trail of the guide long hole; when the latching electromagnet is not electrified, the lower end of an iron core of the latching electromagnet is positioned on the motion trail of the baffle plate; the terminal of the motion trail of the electrified motion of the iron core is provided with a micro switch; the micro switch controls the closing electromagnet to move; and terminal of the motion trail of the baffle plate of the closing bent plate is provided with another micro switch which controls an energy storage motor to operate. Compared with the prior art, the circuit breaker interlocking device solves the problem that the current circuit breaker interlocking device can not latch an energy storage branch and can prevent a circuit breaker from jumping, thereby reducing safety hazard.

Description

technical field [0001] The invention relates to the technical field of manufacturing switchgear for power transmission and transformation, in particular to a spring-operated circuit breaker interlocking device for medium and high voltage switchgear. Background technique [0002] The high-voltage switchgear currently produced and used is equipped with a high-voltage circuit breaker. In order to prevent the circuit breaker from being closed by mistake, a mechanical interlock device needs to be installed inside the operating mechanism of the high-voltage circuit breaker. The Chinese patent authorization announcement number CN201498907U discloses a circuit breaker interlock device. The interlocking device includes a closing electromagnet, a closing shaft, a closing block, a closing arm, a closing bent plate, etc., but this interlocking device is only suitable for a removable circuit breaker, so that the When the trolley is in the non-working position or test position, it is for...

Images