Interlock locking structure for vacuum circuit breakers

Abstract

The invention discloses an interlock lock mechanism for a vacuum circuit breaker, which comprises a positioning releasing rod. The positioning releasing rod is connected to an interlock rod so as to release the breaker main body by elevating the interlock rod and allowing the interlock rod to leave a position hole. The positioning releasing rod is arranged below the breaker main body so as to rotate to a first position corresponding to the locking device of the interlock rod or a second position corresponding to the releasing position of the interlock rod. The positioning releasing rod falls on the first position. The positioning releasing rod rises on the second position. The interlock lock mechanism further comprises a lock magnetic structure having a lock pin. The lock pin can move straightly to the locking position and the releasing position. On the locking position, the positioning releasing rod is locked on the first position. On the releasing position, the positioning releasing rod is released and can move to the second position.

Description

technical field [0001] The present disclosure relates to a vacuum circuit breaker, in particular to an interlocking locking mechanism for a vacuum circuit breaker. Background technique [0002] In general, a vacuum circuit breaker is an electrical device that is connected to a distribution line with a high voltage of several thousand volts or an extra high voltage of tens of thousands of volts so as to pass Automatically cut off the corresponding power distribution circuit, so as to protect the equipment and lines on the electric load side. [0003] A vacuum circuit breaker is generally used in that it is housed in a switchboard together with various electric devices including monitoring relays, molded case circuit breakers, etc., in order to control the operation of motors, etc. [0004] In the following, reference will be made to Figure 1 to Figure 5 to describe an example of a vacuum circuit breaker. [0005] The vacuum circuit breaker 100 includes a bracket 20 and a c...

AI Technical Summary

Problems solved by technology

[0052] In the case where the rated control power (for example, a DC voltage of tens of volts to 220 volts or an AC voltage of several tens of volts to 250 volts) is not normally supplied to the circuit breaker main body, it may not be possible to carry out the control of the power generated in the vacuum circuit breaker. Detection of fault current such as overcurrent or short-circuit current, and automatic circuit breaking (tripping) operation of the circuit breaker body based on detection of fault current, which can cause serious electrical accidents

Images