An electric locomotive gis high voltage box

Abstract

The invention discloses a GIS high-voltage box for an electric locomotive, comprising: a high-voltage isolation switch, a vacuum circuit breaker (4), a current transformer (5), a voltage transformer (6) and a grounding switch (7), all of which are arranged in the middle sealed box (1c), and the interior of the intermediate sealed box (1c) is filled with sulfur hexafluoride gas; the interior of the intermediate sealed box (1c) is equipped with a cable inlet terminal (8) and a cable outlet terminal (9); the high-voltage isolation switch Electrically connected to the pantograph through the cable inlet terminal (8); the current transformer (5) is electrically connected to the internal circuit of the electric locomotive through the cable outlet terminal (9); the vacuum circuit breaker operating mechanism (10) is connected to the vacuum circuit breaker (4 ) connection; the grounding switch operating mechanism (11) is connected to the grounding switch (7); the high-voltage isolating switch operating mechanism (12) is connected to the high-voltage isolating switch. The implementation of the embodiment of the present invention can not only effectively prevent the high-voltage device from discharging to the ground, but also reduce the space occupied by the high-voltage device on the top of the electric locomotive, and improve the efficiency of installation and disassembly.

Description

technical field [0001] The invention relates to the field of electric locomotives, in particular to a GIS (Gas Insulated Switchgear, gas insulated metal-enclosed switchgear) high voltage box of an electric locomotive. Background technique [0002] An electric locomotive generally refers to a vehicle that uses a pantograph to obtain electric energy from the catenary and converts this electric energy into traction force. For example, electric trains, EMUs, and high-speed rails in the prior art all belong to electric locomotives. [0003] In the existing technology, the electric energy obtained by the pantograph needs to pass through high-voltage devices such as high-voltage isolating switches, voltage transformers, vacuum circuit breakers, grounding switches, and current transformers, and then enter the interior of the electric locomotive; There will be no electrical interference between them, so these high-voltage devices are installed on the top of the electric locomotive, a...

AI Technical Summary

Problems solved by technology

However, these high-voltage devices in the prior art are easily affected by weather conditions such as rain, snow, ice, smog, etc., and discharges to the ground frequently occur; at the same time, because the predetermined electrical safety distance between these high-voltage devices in the prior art Therefore, it needs to occupy a large space, and the space on the top of the electric locomotive is very small, which makes the installation and removal of these high-voltage devices very inconvenient

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