Outdoor 27.5 kV fixedly-sealed type vacuum modularized electric appliance for electrified railway

Abstract

The invention relates to an outdoor 27.5 kV fixedly-sealed type vacuum modularized electric appliance for an electrified railway, which comprises a supporting frame and a monopole fixedly-sealed type vacuum circuit breaker arranged on the supporting frame, wherein the monopole fixedly-sealed type vacuum circuit breaker is arranged in the middle part of the supporting frame, and an incoming line connecting terminal and an outgoing line connecting terminal are positioned on two sides of the supporting frame respectively; the outgoing line connecting terminal is positioned on a first fixedly-sealed supporting column type transformer, a moving contact of a first isolating switch is positioned on a supporting seat of the first fixedly-sealed supporting column type transformer, a current transformer is arranged between the first isolating switch and the circuit breaker, a fixed contact of the first isolating switch is positioned on the current transformer, and the current transformer is connected with the monopole fixedly-sealed type vacuum circuit breaker; and the incoming line connecting terminal is positioned on a second fixedly-sealed supporting column type transformer, a moving contact of a second isolating switch is positioned on the second fixedly-sealed supporting column type transformer, and a fixed contact of the second isolating switch is positioned on a fixedly-sealed terminal of the circuit breaker. The outdoor 27.5 kV fixedly-sealed type vacuum modularized electric appliance for the electrified railway effectively reduces the floor area and the investment cost, and has good reliability, convenient maintenance and good product reliability.

Description

technical field [0001] The invention relates to a special switchgear for electrified railway. Background technique [0002] At present, the switchgear of electrified railway traction station, divisional station and switching station are circuit breakers, voltage transformers, current transformers, isolating switches and other main equipment, which are arranged indoors in the form of unit intervals or switch cabinets, all of which need to be equipped with production houses. In order to meet the product requirements. Although the reliability of power supply is high, land acquisition and housing production require more investment. Its disadvantages are that it occupies a large area, high investment cost, low reliability, troublesome maintenance, great influence from the external environment, and poor product reliability. Contents of the invention [0003] In order to overcome the shortcomings of the existing switchgear, such as large floor area, high investment cost, low re...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing switchgear that occupy a large area, high investment cost, low reliability, troublesome maintenance, great influence from the external environment, and poor product reliability, the present invention provides a switchgear that effectively reduces the occupied area and reduces the investment cost. , Good reliability, easy maintenance, and good product reliability for electrified railway outdoor 27.5kV solid-sealed vacuum modular electrical appliances

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