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Surge protection element

A technology for surge protection and components, which is applied to electrical components, spark gap parts, overvoltage arresters using spark gaps, etc., can solve problems such as short circuit, deterioration of sealing electrode insulation, end of life of surge protection components, etc., to achieve Effects of suppressing short circuits and increasing the number of surge applications

Active Publication Date: 2018-09-28
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] That is, due to arc discharge, the metal constituting the protruding electrode part is molten and splashed, and the metal component adheres to the inner surface of the insulating tube, thereby causing a problem that the insulation between the pair of sealing electrodes deteriorates.
In particular, when the surge applied current exceeds 10kA, metal spatter becomes noticeable, and if a large amount of metal components adhere to the inner surface of the insulating tube, a energized circuit will be formed on the inner peripheral surface of the insulating tube and cause In the event of a short circuit, it may be judged that the life of the surge protection element has ended.

Method used

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Embodiment Construction

[0024] Next, while referring to figure 1 and figure 2 , while describing the first embodiment of the surge protection device according to the present invention. In addition, in each of the drawings used in the following description, the scale is appropriately changed in order to make each member visible or easily recognizable in size.

[0025] Such as figure 1 and figure 2 As shown, the surge protection device 1 of the present embodiment includes: an insulating tube 2; and a pair of sealing electrodes 3 that seal the openings at both ends of the insulating tube 2 and seal the discharge control gas inside.

[0026] Furthermore, the surge protection device 1 of the present embodiment includes the discharge assisting portion 4 formed of an ion source material formed on the inner peripheral surface of the insulating tube 2 .

[0027] The pair of sealing electrodes 3 has a pair of protruding electrode portions 5 protruding inward and facing each other.

[0028] At least one ...

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PUM

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Abstract

This surge protection element comprises: an insulating tube 2; and a pair of sealing electrodes 3 that block both end opening parts of the insulating tube and seal a discharge control gas inside. Thepair of sealing electrodes have a pair of protruding electrode parts 5 that protrude to the inside and face each other. An inner circumferential surface of the insulating tube has formed therein at least one groove 2a that extends in the circumferential direction.

Description

technical field [0001] The present invention relates to a surge protection device for protecting various equipment from surges (Surge) caused by lightning strikes and the like, and preventing accidents in advance. Background technique [0002] The parts connected to communication lines by electronic equipment such as telephones, fax machines, and modems, power lines, antennas, or image display drive circuits of CRT, LCD TVs, and plasma TVs are vulnerable to lightning surges (Lightning surge). ) or static electricity and other abnormal voltages (surge voltages), a surge protection element is connected to prevent damage to electronic equipment or printed circuit boards on which the equipment is mounted due to thermal damage or fire due to abnormal voltage. [0003] Conventionally, for example, as shown in Patent Documents 1 and 2, an arrester (Arrester) type surge protection device is described, which includes an insulating tube that is a cylindrical body such as ceramics or g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T4/12
CPCH01T4/12H01T1/22H01T1/20H01T2/02
Inventor 黛良享杉本良市酒井信智
Owner MITSUBISHI MATERIALS CORP