Mobile motor train unit extra-high voltage resistance detecting device

Abstract

A mobile motor train unit extra-high voltage resistance detecting device comprises a low-voltage electric cabinet, a high-voltage electric cabinet and an electric vehicle. The low-voltage electric cabinet and the high-voltage electric cabinet are fixed on the electric vehicle. The low-voltage electric cabinet and the high-voltage electric cabinet are electrically connected through an electric and communication connector. The output high voltage of the high-voltage electric cabinet is connected to the vacuum breaker of a motor train unit high-voltage equipment box. The mobile motor train unit extra-high voltage resistance detecting device has the advantages that the device can be moved optionally, and experiments can be performed on lines with safety protection; voltage resistance experiments on lines with extra-high voltage resistant wires can be avoided, and equipment utilization rate is increased; the device is compact in structure, free of production safety risks and wide in application range; the device has overvoltage and overcurrent fast disconnection protection, short circuit current limitation, a main loop automatic grounding discharge function and the like in terms of electric control, and safety is achieved sufficiently; voltage resistance time is saved, experiment steps are simplified, and extra-high voltage resistance experiments can be performed fast, accurately and safely after motor train unit grouping.

Description

technical field [0001] The invention belongs to the technical field of ultra-high voltage withstand test after marshalling of EMUs, and in particular relates to a mobile ultra-high voltage withstand device for EMUs. [0002] Background technique [0003] The original EMU extra-high vehicle withstand voltage test adopts the fixed equipment withstand voltage method, that is, an overhead line with a length of more than 100 meters and a length of 100 kV is set in the air of the test plant. At the beginning of the test, the operator boarded the roof of the train, and used a soft connection to introduce the test power from the overhead line to the pantograph position. The fixed equipment is large in size and covers an area of ​​more than 60 square meters. The pressure-resistant overhead wires occupy a large space and require a high height for the test plant. The test position is fixed. Operators need to repeatedly go up and down the roof of the motor car, and the labor intensity ...

AI Technical Summary

Problems solved by technology

[0004]With the expansion of the company's production capacity, extra-high withstand voltage tests are carried out in other test plants, and the height of the plant cannot meet the safety distance requirements for overhead lines; in after-sales operations, some EMUs It is necessary to conduct safe and reliable ultra-high voltage withstand tests outside the company. Fixed-type withstand voltage equipment cannot be used. Traditional distributed ultra-high voltage withstand equipment has high requirements for safety distances and personnel, and it is impossible to safely introduce UHV into EMUs for testing. cable etc.

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