Insulating protective sleeve for transformer

Abstract

The invention discloses an insulating protective sleeve for a transformer. The insulating protective sleeve comprises an insulating protective sleeve body. The insulating protective sleeve body is a hollow protruding component. Steps are arranged at the top end of the insulating protective sleeve body. Two U-shaped sleeves are arranged at the bottom of the insulating protective sleeve body. The U-shaped sleeves are arranged symmetrical about the center line of the insulating protective sleeve body. The open ends of the U-shaped sleeves are opposite to each other. The two U-shaped sleeves are connected with the insulating protective sleeve body into a whole through connecting portions. The distance alpha between the upper surface of each U-shaped sleeve and the bottom face of the insulating protective sleeve is 8cm. The insulating protective sleeve is made of composite silicone rubber through high-temperature vulcanization, does not deform and is high in flexibility, the service life can reach 50 years, and the insulating protective sleeve has good insulating performance and is reasonable in design and convenient to install; in addition, by means of the insulating protective sleeve, the arcing distance is increased, and therefore the insulating strength and the capacity for bearing a flashover voltage are enhanced, and the insulating protective sleeve can bear a 20KV flashover voltage.

Description

technical field [0001] The invention relates to the technical field of transformer accessories, in particular to an insulating sheath of a transformer. Background technique [0002] Power transmission and transformation equipment, including many transformers, are set up to operate in the open air. In the wind, dust, rain and dew, the terminal parts of the wiring insulation terminals are more likely to have temperature rise due to contact resistance, or material differences may occur in liquid media. The potential difference is prone to ionization corrosion. And because the installation height of some transformers is not enough to achieve the safety isolation effect. In order to prevent personal electric shock caused by exposed electrical contact points, and to prevent interphase short-circuits caused by foreign objects such as branches or crawling of small animals, transformer insulation sheaths are introduced for power equipment with various exposed connectors and terminal...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent No. 96230958.3 has proposed a kind of conical, insulating cover that communicates up and down, because same purpose, but its structure is single, and application face is narrow, and installation process has many inconveniences

However, after the bare joints and terminals of the transformer are heated, the sheath will be burned out due to the high temperature, which will affect the normal use of the transformer insulation sheath and even the power supply line, and the discharge distance of the insulation sheath is small, so it is easy to be hit. Put on

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