Low-voltage drawer-type switch cabinet with interlocking mechanism and use method of low-voltage drawer-type switch cabinet

Abstract

The invention belongs to the technical field of electrical equipment, and particularly relates to a low-voltage drawer type switch cabinet with an interlocking mechanism and a using method of the low-voltage drawer-type switch cabinet. The low-voltage drawer type switch cabinet comprises a drawer, a linkage mechanism, an insulating rope, a tension adjusting mechanism and a circuit breaking mechanism, a door lock is rotationally installed at the front end of the drawer, and the linkage mechanism is installed on the inner side of the front end of the drawer; a first pulley in transmission connection with the linkage mechanism is fixedly connected with one end of an insulating rope, the insulating rope is in sliding connection with a second pulley, a third pulley, a fourth pulley and a fifth pulley, the other end of the insulating rope is connected with a sixth pulley rotationally installed on the circuit breaking mechanism, and the tension adjusting mechanism is installed on the inner side face of the drawer on one side of the linkage mechanism. The linkage mechanism can be adjusted to adapt to the circuit breaking mechanisms of the circuit breakers of different specifications through linkage of the insulating rope, and physical circuit breaking operation is carried out on the circuit breakers of different specifications under the adjustment of the tension degree adjusting mechanism.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a low-voltage drawer-type switch cabinet with an interlocking mechanism and a use method thereof. Background technique [0002] The rated current of the low-voltage power distribution cabinet is AC 50Hz, and the power distribution system with a rated voltage of 380v is used for power conversion and control of power, lighting and power distribution. [0003] At present, the anti-misoperation interlocking mechanism of most of the drawer units that adopt the pull-out type is designed based on the manual operation mode, which is not applicable to the anti-misoperation interlocking mechanism under the electric operation mode. Because the electric operation drawer has no handle and its supporting interlocking mechanism measures, it is very unsafe. Some users do not know the precautions. The electric operation drawer can be pulled out directly when it is charged...

AI Technical Summary

Problems solved by technology

Because the electric operation drawer has no handle and its supporting interlocking mechanism measures, it is very unsafe. Some users do not know the precautions. The electric operation drawer can be pulled out directly when it is charged, which is very dangerous and has a great potential safety hazard.

However, due to structural problems, the electric control circuit of the drawer is easy to operate with power on, and there is no mechanical lock. Therefore, the closing and opening can only be operated through the electrical circuit, so there is no way to prevent the electric control from being pulled out to the test position when it is in the working position closing state , when the electric control circuit of the drawer is drawn out under the closing condition, the live operation does not conform to the maintenance test regulations at this time, and there are unsafe operations and unstable operation of the power circuit, which may easily cause low-voltage power distribution system failure or personal accidents.

[0004] For the electric drawer unit made by the existing manufacturer, due to the difference in circuit breaker specifications and installation positions in the actual use process, only one set of interlocking mechanisms cannot achieve universally applicable interlocking circuit breaking operations, and a miniature circuit breaker connection must be added. The control circuit in the drawer unit increases the purchase and maintenance cost of multiple sets of circuit breakers for the low-voltage power distribution cabinet, which does not conform to the mainstream sustainable development concept of saving today, and also reduces the market competitiveness of the power distribution cabinet

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