A handcart for a central switch cabinet

Abstract

The invention discloses a middle-set-type switch cabinet handcart, comprising a chassis, an insulation contact arm, an aviation plug and a voltage transformer; a frame is arranged on the chassis; a connected insulator is fixedly arranged at the upper end of the frame; the insulation contact arm is installed on the frame through the connected insulator; the aviation plug is installed at the upper end of the frame and is opposite to the connected insulator; the voltage transformer is installed on the frame; and a heat radiation mechanism is arranged on the frame. The handcart disclosed by the invention is advantaged by that the integral size of the handcart is not influenced; the structure is rational; secondary wire arrangement and wire connection are convenient; the potential quality hazard of loose wiring resulted from shake is avoided; the occupied installation position of the voltage transformer is reduced; the integral size of the frame of the handcart is optimized; the whole handcart is minimized; greater space is reserved for designing the cabinet; the heat radiation effect of the handcart and the cabinet can be greatly improved; and the service life of the whole middle-set-type switch cabinet is improved.

Description

technical field [0001] The invention relates to the related technical field of power transmission and distribution switchgear, in particular to a handcart for a central switch cabinet. Background technique [0002] The lower handcart of PT central switchgear is used for removable switchgear or central switchgear, and components such as PT, capacitors, isolation, etc. are assembled on a movable frame, and the handcart can be pushed through the guide rails in the cabinet Push into the cabinet for protection and control. The advantage of the handcart placed under the PT center switch cabinet is that it is safe and convenient to overhaul, and it can be easily pulled out for maintenance during maintenance, forming an obvious fracture with the switch cabinet. In addition, when there is a problem with the handcart, the spare handcart can be replaced quickly, so that it will not affect the excessive power outage time. [0003] The commonly used KYN28A-12 central cabinet lower PT h...

AI Technical Summary

Problems solved by technology

There is an aviation socket for the secondary control circuit placed on the chassis. During the secondary wiring, the composition wiring is messy, and it will shake, resulting in a quality hazard of loose wiring.

[0004] In addition, the lower PT handcart of the KYN28A-12 central cabinet often has a high temperature during use, but there is no corresponding heat dissipation device to solve this problem

Images