40.5kv middle disposed armored withdraw type metal enclosed switch cabinet

Abstract

The invention discloses a 40.5kV middle-mounted armored removal metal enclosed switch cabinet which comprises a cabinet main body, a circuit breaker handcart and a locking device. A static contact is arranged in the cabinet main body; the circuit breaker handcart is provided with a moving contact and a chassis, wherein a static vehicle frame and a screw rod push mechanism are arranged on the chassis, a front and rear sliding connection relation is formed between the circuit breaker handcart and the cabinet main body after the circuit breaker handcart enters in the cabinet main body, and the screw rod push mechanism can be used to push the circuit breaker handcart back and forth to cause the circuit breaker handcart to slide between the working position and the test position; the locking device is arranged between the cabinet main body and the chassis and can be locked or released, and the locking device is in locked state after the circuit breaker handcart enters in the cabinet main body; and the circuit breaker handcart is limited up and down, back and forth and left and right, and the moving contact is in a contacted stable state when the static contact is meshed with the moving contact, so that the static contact is reliably meshed with the moving contact, therefore, the negative effects caused by poor meshing between the static contact and the moving contact due to the electric power during the running process can be effectively avoided.

Description

technical field [0001] The invention relates to a 40.5kV mid-mounted armored removable metal-enclosed switchgear. Background technique [0002] The 40.5kV armored removable AC metal-enclosed switchgear is currently used in the market as a floor-standing design. The floor-standing design method is adopted. The circuit breaker handcart has a large size, high height, and high center of gravity. It cannot be positioned up and down, left and right, and cannot be locked forward and backward. There are the following disadvantages: First, the coordination with the switch cabinet is not good, the force arm is large and the electric torque is large in the working position, which will make the moving contact in an unstable state of contact, resulting in unpredictable swing force, and the circuit breaker handcart is tilted back. After being pushed out, it is easy to be crushed to people, and it is unsafe to operate and use; second, the temperature of the moving and static contacts rise...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a 40.5kV center-mounted armored and removable metal-enclosed switchgear, which overcomes the problems of the switchgear in the background technology, such as the handcart of the circuit breaker leaning back, easy to press on people after being pushed out, unsafe to operate, and static and dynamic. Bad coordination of contacts, easy burning of contacts, paralysis of power supply circuit, failure to work

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