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Oil-immersed and high-voltage current-limiting fuse with total range

A full-range, oil-immersed technology, applied in electrical components, circuits, emergency protection devices, etc., can solve the problems of low safety, high price, difficult maintenance of power transmission equipment, etc., and achieve high voltage level, convenient installation and replacement. Effect

Active Publication Date: 2006-08-16
上海电器陶瓷厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 40.5kV power transformers, there is no high-voltage current-limiting fuse that can be used for fault protection. The fault protection mostly uses circuit breakers, which are expensive and low in safety.
And because wind power generation is usually in deserts, Gobi and other desolate and sandy places, the transformer is easy to enter sand, and the maintenance of power transmission equipment is difficult, so the sealing requirements for the components used in the transformer (such as fuses) are relatively high

Method used

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  • Oil-immersed and high-voltage current-limiting fuse with total range
  • Oil-immersed and high-voltage current-limiting fuse with total range
  • Oil-immersed and high-voltage current-limiting fuse with total range

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Embodiment Construction

[0026] figure 1 It is a structural schematic diagram of an embodiment of the oil-immersed high-voltage current-limiting full range fuse of the present invention. The high-voltage current-limiting full range fuse of the present invention includes a base 10 , a fuse 20 and a fuse 30 .

[0027] see figure 2 . The base 10 is a hollow cylinder with one-way opening, and the fuse carrier 30 and the fuse 20 are sequentially arranged in the base 10 from the opening to the inside, and are connected as a whole. Base 10 is provided with mounting base 11 near mouth end, and mounting base 11 (referring to image 3 ) is an aluminum alloy material, the protruding cross-section in the middle is square, and mounting holes 11a are arranged on its four corners, and are fixed in the box-type substation by bolts. The installation base 11 is also provided with a circular groove 11b close to the cylindrical junction of the base, and a sealing ring can be placed in the circular groove 11 . The b...

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Abstract

The invention consists of a barrel type foundation with a single direction opening, a fuse holder and a fuse link that are located in the opening in turn and connected into one-piece. The foundation also includes a protective cover sealing together with the opening, and two conducting ring located at two end of the fuse link. The fuse link includes a fusion tube, a framework in the fusion tube, a fusion splice winding on the framework, and a fuse wire located in a high temperature resistant gas tube. The fuse tube is filled with quartz sand, and on the fuse wire a metallurgical effect alloy is welded. The fuse holder includes an insulation grip and two contacts respectively located at both end of fuse link. The two contacts are respectively connected to two conductive rings.

Description

technical field [0001] The invention relates to an oil-immersed high-voltage current-limiting full-range fuse. Background technique [0002] At present, the domestic and foreign markets are mainly divided into two types of box-type transformers, one is the American-style box-type transformer with high-voltage electrical components and transformers in the same box, and the other is the European-style box-type transformer. There are usually two kinds of faults that may occur in a transformer, one is a short circuit fault and the other is a low overload current fault. In the American box substation, the oil-immersed high-voltage current-limiting fuse is mainly used as the backup fuse, and the jet fuse is used as the overload fuse and connected in series with the backup fuse to form a full range of secondary protection. Among them, the current backup fuse adopts the busbar connection type, and is immersed in the oil of the box together with the transformer. It is very inconveni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/02H01H85/042H01H85/05H01H85/055H01H85/06H01H85/08H01H85/143H01H85/157H01H85/18H01H85/20
Inventor 钱勇杰林海鸥沈一鸣
Owner 上海电器陶瓷厂有限公司
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