Surge protector and its thermal trip mechanism

A surge protector, thermal tripping technology, applied in protection switch operation/release mechanism, protection switch, emergency protection device, etc., can solve the problems of easy wire drawing, difficult welding, unstable tripping performance, etc., and achieve reliable Installation, temperature concentration, and the effect of being conducive to product tripping

Active Publication Date: 2016-09-28
SEARI ELECTRIC TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If one solder joint is used, the pins of two varistors and one discharge tube are welded together, which is difficult to weld and easy to draw when tripping
If multiple solder joints are used, the heat is not easy to concentrate, resulting in unstable tripping performance

Method used

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  • Surge protector and its thermal trip mechanism
  • Surge protector and its thermal trip mechanism
  • Surge protector and its thermal trip mechanism

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Embodiment Construction

[0026] First, the term "connection" used here is explained. This article deals with mechanical and electrical structures, so the term "connection" includes both mechanical and electrical connections. The mechanical connection is required to meet the mechanical strength and mechanical operation, and the electrical connection is required to meet the electrical conduction. For those skilled in the art, it can be clearly understood from the context that the "connection" used everywhere refers to mechanical connection, electrical connection or both.

[0027] refer tofigure 1 , Figure 4A with Figure 4B , discloses a first embodiment of a surge protector. figure 1 , Figure 4A with Figure 4B The structure of the first embodiment of the surge protector is disclosed from different directions. The surge protector includes: a housing, a first protection element, a second protection element, a connecting piece and an elastic mechanism.

[0028] In one embodiment, the housing is ...

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Abstract

A thermal tripping mechanism of a surge protection device comprises an elastic mechanism. Two first protection components (103) and one second protection component (108) form a Y-shaped layout and the two first protection components (103) are directly or indirectly connected to the second protection component (108) by using a thermal fusing material. The elastic mechanism comprises an elastic part (105) and a slide part (106). The elastic part (105) drives the slide part (106) to move by an elastic force. When the two first protection components (103) are both in a normal working state, the thermal fusing material does not reach a fusing temperature, the two first protection components (103) and the second protection component (108) form a conductive path, and the elastic part (105) is in an energy storage state. When at least one of the first protection components (103) is in an abnormal working state, the thermal fusing material reaches the fusing temperature and is fused, the elastic part (105) releases energy for driving the slide part (106) to move, and the slide part (106) moves to cut off the conductive path.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, more specifically, to a surge protector in the low-voltage electrical appliances. Background technique [0002] In a low-voltage power distribution system, a surge protector (Surge Protection Device, SPD) is usually used for protection against overvoltage caused by external influences such as lightning. For protection of terminal appliances use a type III surge protective device (SPD). At present, the existing Class III SPDs on the market mainly provide common mode protection. Since common-mode protection has certain limitations, it is desirable to have a surge protector that can provide both common-mode protection and differential-mode protection. [0003] The surge protector in Y layout can provide common mode protection and differential mode protection at the same time. The so-called Y-type layout means that the surge protector includes two first protection elements (usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/20H01H71/04H01H83/10
CPCH01H71/122H01H71/20H01H83/10H01H71/04H01H2085/0486
Inventor 杨帆李人杰金建荣曹阳葛伟骏
Owner SEARI ELECTRIC TECH
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