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Multi-gap metal gas discharge tube power supply over-voltage protection module

A technology of gas discharge tube and protection module, which can be used in emergency protection circuit devices for limiting overcurrent/overvoltage, overvoltage arresters using spark gaps, emergency protection circuit devices, etc., and can solve potential safety hazards of power supply lightning arresters , there are problems such as freewheeling, and achieve the effect of no safety hazard, large flow capacity and good stability

Active Publication Date: 2010-06-23
东莞市新铂铼电子有限公司
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an M-GDT power supply overvoltage protection module to solve the shortcomings of existing power supply lightning protectors such as potential safety hazards and freewheeling

Method used

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Embodiment Construction

[0030] In order to fully disclose the technical solution of the present invention so that those skilled in the art can realize the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] It should be noted that the present invention adopts a new type of M-GDT, which includes at least one intermediate electrode between two terminal electrodes of the M-GDT, and three independent gaps are provided between two adjacent electrodes of the M-GDT.

[0032] see Figure 3a , is the schematic circuit diagram of the first embodiment of the present invention. The M-GDT power supply overvoltage protection module in this embodiment is mainly composed of M-GDT. The terminal electrode A of the M-GDT is conductively connected to the phase line L of the power supply, the terminal electrode A' of the M-GDT is conductively connected to the neutral line N of the power supply or the protective ground PE, and the middle elect...

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Abstract

The invention relates to a multi-gap metal gas discharge tube (hereinafter referred to as M-GDT) power supply over-voltage protection module, which mainly consists of the M-GDT. A terminal electrode A of the M-GDT is in conducive connection with a phase line L of a power supply, A terminal electrode A' of the M-GDT is in conductive connection of a neutral line N or a protective earth PE of the power supply, intermediate electrodes of K1-Kn of the M-GDT are respectively in conductive connection with one ends of voltage dependent resistors of MOV1-MOVn, and the other ends of the MOV1-MOVn are in conductive connection with the terminal electrode A or the terminal electrode A' of the M-GDT. The product of the invention has no potential safety hazard, large current capacity, no continuous current, high reliability and good stability.

Description

technical field [0001] The invention relates to a power supply system overvoltage protection technology, in particular to a multi-gap metal gas discharge tube (hereinafter referred to as M-GDT) power supply overvoltage protection module. Background technique [0002] The power surge protector, also known as lightning arrester or surge protector, referred to as SPD (Surge Protection Divice, surge protector), is composed of several overvoltage protection modules. Therefore, the performance of the power surge protector basically depends on the performance of the overvoltage protection module. At present, the overvoltage protection module of each power supply surge protector mainly adopts a piezoresistor (hereinafter referred to as MOV) with a thermal detachment alarm device ST or a series combination of an MOV with a thermal detachment alarm device ST and a single-gap gas discharge tube GDT. [0003] The above-mentioned existing overvoltage protection module has the following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H5/04H01T4/12
Inventor 曾献昌
Owner 东莞市新铂铼电子有限公司
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