Transformer insulation sheath

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 a transformer insulating sheath. Background technique [0002] Many power transmission and transformation equipment, including 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 prone to temperature rise due to contact resistance, or the difference in materials will be in the liquid medium. 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 contact points of electrical appliances, and to prevent interphase short circuit caused by overlapping foreign objects such as branches or crawling small animals, transformer insulating sheaths have been introduced for various exposed joints and terminals o...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent No. 96230958.3 proposes a tapered insulating shield connected up and down. Due to the same purpose, but its structure is single, the application area is narrow, and the installation process is inconvenient.

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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