Mume flower contact system

Abstract

The invention relates to a tulip contact system, which comprises a main contact and a contact arm; wherein, the main contact comprises a contact base, a plurality of contact fingers and a retaining ring. The contact base is provided with a containing part and a connecting part. A plurality of contact fingers are circumferentially arranged in the containing part; each contact finger is provided with a contact part and a support part; the contact part of each contact finger faces the center of the containing part and forms a contact ring; the support part of each contact finger is extended from the contact part to the space between the contact part of the adjacent contact finger and the inner wall of the containing part; a spring is arranged between one side of the support part and the contact part; and the other side of the support part is contacted with the inner wall of the containing part. The retaining ring is combined with the containing part, so that the contact fingers can be fixed in the containing part. As the spring and the contact fingers are assembled and arranged inside the contact base, the tulip contact system is provided with higher short-term tolerance current and peak-value tolerance current compared with the traditional tulip contact system.

Description

technical field [0001] The invention relates to contacts in high-voltage electrical products, in particular to a plum-blossom contact system. Background technique [0002] As we all know, in high-voltage electrical products, various types of contacts play a decisive role in the performance, capacity and reliability of the product. Therefore, in product design, selecting the appropriate contact type plays a vital role in perfecting the design and improving product efficacy. However, the shapes and characteristics of various types of contacts are different, and their advantages and disadvantages are also different. Therefore, it is necessary to understand the characteristics and advantages and disadvantages of various types of contacts in order to make reasonable choices according to needs. [0003] All kinds of contacts have different shapes and purposes, but according to their working principle, they can be divided into self-supporting contacts and non-self-supporting conta...

AI Technical Summary

Problems solved by technology

[0011]Among the non-self-supporting contacts, the popular plum blossom contacts on the market today mainly use outsourced springs, and the main current-carrying contacts are stamped with copper plates and equipped with aluminum Skeleton support, the main disadvantage is that the spring is exposed. If the spring fails due to annealing due to long-term heating or the spring falls off due to external factors, a large short-circuit current will appear when the main circuit has a short-circuit fault, resulting in a huge electromotive force. Scattered under the action of power, the entire contact immediately exploded, putting the switchgear in a very dangerous state

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