Outdoor dry-type voltage transformer for electric locomotive

Abstract

The invention relates to an outdoor dry-type voltage transformer used for an electric locomotive, which comprises a main body which is composed of an iron core, a primary winding which is sheathed on the iron core, and a secondary winding, a primary terminal connector, a secondary terminal connector, a primary high-voltage insulation column which is sheathed outside of the primary terminal connector, and a base, wherein the main body, the primary terminal connector, the secondary terminal connector and the primary high-voltage insulation column are fixedly installed on the base after integrally adopting epoxide resin and silicon rubber to compositely insulate the secondary terminal connector and the primary high-voltage insulation column into a whole structure, wherein the primary high-voltage insulation column and the main body are in cylindrical shape or ellipsoidal shape, and the connection between the primary high-voltage insulation column and the main body is a spherical surface whose both sides are cut obliquely. The outdoor dry-type voltage transformer can prevent the leakage of oil and the generation of a pollution flashover fault, and the invention has the advantages of stable insulation, fuse protection, long service life, small volume, convenient fixing, high mechanical strength, and wide application.

Description

technical field [0001] The invention relates to a voltage measuring device, in particular to an outdoor dry-type voltage transformer for electric locomotives. Background technique [0002] The outdoor voltage transformer is the equipment for measuring voltage, real-time monitoring or relay protection in the electric locomotive system. At present, the outdoor voltage transformer used on the roof of the electric locomotive is oil-immersed, using oil-paper insulation and magnetic bottle insulation. Due to the relatively harsh outdoor dynamic operating environment, the voltage transformer often leaks oil, and the oil quality deteriorates. The magnetic bottle is easy to accumulate dirt and cause pollution flashover voltage, which requires frequent maintenance and repair work; in addition, the product is heavy and bulky. Inconvenient installation and low service life have always been problems for electric locomotive maintenance personnel, and they are also urgent problems to be so...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing outdoor oil-immersed voltage transformers of electric locomotives such as easy oil leakage, oil quality deterioration, easy pollution flashover, low service life, complicated maintenance, repair and installation, the purpose of the present invention is to provide a method for preventing oil Outdoor dry-type voltage transformers for electric locomotives with leakage, long maintenance period, pollution flashover resistance, and small size

Images