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Over voltage breaking protector

A protector and overvoltage technology, applied in overvoltage protection resistors, emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection circuit devices, etc., can solve unstable performance, short service life, structural Complexity and other issues, to achieve the effect of long service life, convenient production and simple structure

Inactive Publication Date: 2004-12-08
李帮庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of complex structure, unstable performance and short service life in the prior art.

Method used

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Embodiment

[0015] Embodiment: The piezoresistor layer 1 is made of zinc oxide material, and its rated voltage is 220V; a shielding heat-sensitive layer 2 and a heat-sensitive layer 3 are respectively arranged on its two outer sides, and the heat-sensitive layer 3 and the shielding heat-sensitive layer A metal layer connected to the output lead 6 is provided between the layers 2 . Wherein, the thermally sensitive layer of the screen is made of PTC material with a thickness of 0.2 mm, and its transition temperature T 1 is 150°C; the heat-sensitive layer is made of PTC material with a thickness of 1.0mm, and its transition temperature T 2 is 100°C. The thermosensitive layer or shield thermosensitive layer is symmetrically distributed on both sides of the varistor layer 1 , the output lead 6 is connected to the thermosensitive layer 3 ; the input lead 4 is connected to the metal layer 5 outside the shield thermosensitive layer 2 . The above-mentioned internal arrangement can protect the pi...

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Abstract

The invention relates to modifying structure of overvoltage open circuit protector. The protector includes varistor layer, electrode connected, and temperature sensing layer and output lead. The said temperature-sensing layer sets up outside varistor layer combining the two layers as an integrated layer. The invention possesses features of simple structure, easy production, low cost, good performance of overvoltage protection and long service life. The invention is suitable for fabricating productions of overvoltage protection in different specifications.

Description

technical field [0001] The invention relates to an overvoltage protection device, in particular to an improvement on the structure of a varistor type overvoltage circuit breaker protection device. Background technique [0002] Among the overvoltage protection device products currently used in the market, various protection structures are involved. Among them, a "PTC arc suppression device" is used to eliminate the arc that may be generated between the switch contacts when the current changes, including The current sensing unit connected in series with the switch and the control switch controlled by the sensing unit also include a series branch comprising a control switch, a PTC element and a branch current sensing unit, and the series branch is connected across the series connection between the sensing unit and the switch both ends of the circuit. The PTC arc suppression device has the advantages of low cost, good arc suppression effect, reliable performance and the like. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/10H01C7/12H01C7/18H02H9/04
Inventor 李帮庆
Owner 李帮庆
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