SU1690045A1 - Factory-assembled switch-gear with rolled out switches - Google Patents

Abstract

The invention relates to electrical engineering, to cabinets of complete switchgears (KRU) with withdrawable elements located in two ches. The purpose of the invention is to reduce the size and material consumption. The switchgear cabinet with withdrawable switches is divided into front and rear compartments. The front compartment is divided by height into two chambers in which the withdrawable switches are located. In the rear compartment there are chambers for busbars and a cable entry coupling for the lower withdrawable circuit-breaker. On the side walls inside the chambers there are boxes installed along which the cable entry of the upper withdrawable switch is laid. The cable entry coupling is located above the upper withdrawable circuit breaker chamber. 2 Il.

Description

The invention relates to electrical engineering, to cabinets of high-voltage switchgear with draw-out elements, located in two Rus.

The aim of the invention is to reduce the size, material consumption, improve service and increase reliability.

FIG. 1 shows the complete switchgear, general view; in fig. 2 shows section A-A in FIG. one.

The cabinet 1 of the complete switchgear with withdrawable switches is divided into front 2 and rear 3 compartments. The front compartment 2 is divided by height into two chambers 4 and 5, in which withdrawable switches 6 and 7 are placed.

In the rear compartment 3, the chamber 8 of busbars 9 and the chamber 10 of the coupling 11 of the cable entry 12 of the lower withdrawable circuit breaker 7 are located.

On the side walls inside chambers 4 and 5, boxes 13 and 14 are installed along which the cable inlet 15 of the upper withdrawable switch 6 is laid. A coupling 16 of the cable inlet 15 is placed above the camera 4 of the upper withdrawable switch 6. In chamber 4 of the upper withdrawable switch 6. next to boxes 13 and 14, boxes 17 and 18, communicating with the chamber 5 of the lower withdrawable switch 7 for providing exhaust gases generated during a short circuit, are installed outside the boundaries of chamber 5. The current transformer 19 is also located above the chamber 4 of the upper withdrawable circuit breaker 6.

Laying the cable through the chambers of the withdrawable switches and placing the cable entry sleeve of the upper withdrawable switch allows you not to install an additional busbar on the back of the upper withdrawable switch chamber, which reduces

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fishing, labor-intensive and reduces the size of the cabinet. With the exception of the additional heating pipe, the improvement of the thermal regime in the busbar compartment and the saving of non-ferrous metal are achieved.

Installation next to the ducts for cable ducts for exhaust gases from the chamber of the bottom withdrawable switch provides good localization ability of the lower chamber.

Claims (1)

Claims of invention A complete switchgear with draw-out switches, comprising a cabinet divided by depth into front and rear compartments, cable outlets for switches, current transformer, front compartment divided by the height of two cameras to accommodate the switches, and the rear compartment houses the chambers for busbars and the cable entry coupling of the lower switch, which is different from the fact that, in order to reduce overall dimensions, material consumption, improve service and increase reliability, it is equipped with cable ducts, mounted on the side walls of the chambers their height for input to the upper withdrawable circuit breaker; the coupling of this input and the current transformer are located above the chamber of the upper withdrawable circuit breaker; and on the side walls of this chamber, additionally inserted boxes are installed, the cavities of which communicate with the lower circuit breaker chamber and the atmosphere. 2 Fig. / Aa FIG. 2 I 73 17 4; v 4/8