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Polymer surge arrester

A lightning arrester, polymer technology, applied in resistors, overvoltage protection resistors, non-adjustable metal resistors, etc., can solve problems such as reducing energy absorption capacity and contact failure

Inactive Publication Date: 2013-01-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there may be contact failure between conductive surfaces, reduced energy absorption capability due to reduced conductive area of ​​varistor, and so on

Method used

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  • Polymer surge arrester
  • Polymer surge arrester
  • Polymer surge arrester

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Embodiment Construction

[0016] Embodiments will be described below with reference to the drawings.

[0017] figure 1 is a view showing a vertically cross-sectional schematic structure of the polymer arrester 100 of the first embodiment. figure 2 is shown along figure 1 A horizontal cross-sectional view of the schematic structure taken by line A-A in . As shown in these views, the polymer arrester 100 has a plurality of disk-shaped varistors 1 formed of, for example, a material mainly containing zinc oxide, and arranged in a stacked manner. In this embodiment, a porous metal plate 2 formed of a porous metal having numerous open cells into a disc shape is arranged between all the varistors 1 .

[0018] As the porous metal material for forming the porous metal plate 2, for example, a metal porous body such as Ni, Ni—Cr, or the like can be used. For example, Celmet (product name, manufactured by Sumitomo Electric Toyama Co., Ltd.), which is a sponge-like porous metal body having a three-dimensional ...

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PUM

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Abstract

A polymer surge arrester has: internal elements including a plurality of disc-shaped nonlinear resistors disposed in a stacked manner, electrodes disposed at both ends of the nonlinear resistors, and a plurality of insulating rods coupling the electrodes; an insulating outer skin formed outside the internal elements by casting an insulating resin; and disc-shaped porous metal plates interposed between at least parts of the nonlinear resistors.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from prior Japanese Patent Application No. 2009-154668 filed on June 30, 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] In this case, the exemplary embodiment relates to a polymer lightning arrester. Background technique [0004] In power systems such as transmission lines, power plants or substations, surge arresters are often provided to remove excess voltage and to protect the power system and electrical equipment. In this lightning arrester, the polymer lightning arrester is structured such that a plurality of disk-shaped varistors mainly containing zinc oxide are stacked, and for example electrodes are arranged at each upper and lower end thereof. Also, in order to increase rigidity, a plurality of insulating rods for fastening the varistor are arranged around the varistor, and the insulating rods are fixed with a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12
CPCH01C7/126
Inventor 原田智史小松克明安食富和小林纯津久井贵通
Owner KK TOSHIBA