High-voltage combined electrical appliance for rolling stock

Abstract

The invention discloses a high-voltage combined electrical appliance for a rolling stock. The high-voltage combined electrical appliance comprises a metal housing, a circuit breaker, an earthing switch, a voltage transformer, a metal oxide arrester and a disconnecting switch; the interior of the metal housing is a closed space filled with an inert gas; the metal housing is provided with a high voltage input end, a first high voltage output end and a second high voltage output end; the circuit breaker, the earthing switch and the disconnecting switch are all located inside the metal housing; the first end of the circuit breaker is connected to the high voltage input end, while the second end of the circuit breaker is connected to the first end of the earthing switch, and the second end of the earthing switch is earthed; the second end of the circuit breaker is further connected to the first high voltage output end and connected to the second high voltage output end by use of the disconnecting switch; the voltage transformer and the metal oxide arrester are located outside the metal housing; the voltage transformer is connected to the first end of the circuit breaker; the metal oxide arrester is connected to the second end of the circuit breaker. As the high-voltage apparatus is sealed in the housing full of the inert gas, the insulating property of the high-voltage electrical appliance is not affected by environmental factors.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a high-voltage combined electrical appliance for locomotives and vehicles. Background technique [0002] Locomotives (such as electric locomotives or EMUs) obtain power from the catenary erected along the line to supply the traction system. The main circuit of the electric locomotive or EMUs contains multiple high-voltage electrical appliances, which are generally arranged on the rolling stock in the form of parts , one part is arranged on the roof, the other part is arranged inside or under the car, and the high-voltage external insulation arranged on the roof is exposed to the atmospheric environment. [0003] During the operation of rolling stock, dirt is easy to adhere to the outer insulation of high-voltage electrical appliances, and affected by the atmospheric environment, the dust and pollution attached to the surface of the high-voltage outer insulation of the roof will grad...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high-voltage combined electrical appliance for rolling stock, which at least solves the problem that the external insulation of high-voltage electrical appliances of rolling stock is exposed to the atmospheric environment, and dirt is easy to adhere to, resulting in a decrease in insulation performance and affecting the safety of vehicle operation.

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