金属氧化物避雷器

金属氧化物

避雷器

Metal Oxide Surge Arresters

科聚

科大创新股份有限公司科聚分公司

USTC CHUANGXIN CO. LTD., KEJU BRANCH

科大创新股份有限公司科聚分公司

KEJU BRANCH, USTC.CHUANGXIN CO.,LTD

地址：中国安徽合肥市长江西路669号

邮编：230088

Add： 669 Changjiang West Road Hefei Anhui 230088 P.R. China.

电话(TeL): 0086-551-5329599

传真(Fax): 0086-551-5329618

E-mail：keju@

金 属 氧 化 物 避 雷 器 Metal Oxide Surge Arresters （MOA ）

无间隙氧化锌避雷器是目前国际上最先进的过电压保护器。它用于保护电气设备免受大气过电压和操作过电压的损坏，是电力系统安全运行的必备设备。

本公司从1984年开始生产氧化锌压敏电阻，产品质量居国内领先，阀片残压比小，老化性能好，组装成避雷器已通过原能源部及机电部的联合鉴定。1994年进一步通过电力部的电力设备及仪表质量检验测试中心的检测，证明阀片荷电率可提高到87%，能满足原电力部安检司及新国标GB 11032-2000关于提高部分避雷器额定电压和持续运行电压的要求。1998年通过ISO9001国际质量体系认证，并获得电力部成套局、水电水利规划局颁发的“入网证”，产品列入国家经贸委颁发的“全国城乡电网改造推荐设备名录”。

本公司产品全部满足或优于GB 11032-2000、IEC 60099-4及其他相关部标。

Metal oxide surge arrester without gaps is the most advanced over-voltage protector in the world. It is used in protecting electrical equipment to avoid damage from atmospheric over-voltage & operational over-voltage; it is indispensable equipment in safe run of power system.

Our company has manufactured zinc oxide varistor (ZnO) since 1984. The quality of our products is one-up in china, its residual voltage ratio is little and ageing performance is good. Our arresters, which are made of the varistor, have been approved by former energy sources ministry and machinery & electricity ministry of China. In 1994, our products passed the examines by the testing center of electric power equipment and instrument quality of Chinese electric power ministry again; the charge ratio of it was proved that may raise 87%. So our products can satisfy the requirement of former electric power safety examine ministry of China & the new Chinese national standard GB 11032-2000 about part arresters’ rated voltage & continuous oper ating voltage being boosted. Our company has passed the certificate of ISO9001 international quality system in 1998, and has gained the authorization certificate by the whole set bureau of electric power ministry and the programming bureau of water & electricity and water conservancy of China, the products of our company was brought into the directory of recommendatory equipment for city & countryside all over the China electric-network reconstructing by the committee of economy & trade of China.

Our products all can be satisfied with or be advance of GB 11032-2000、IEC 60099-4 and other correlative department standards.

原理特点Principle and characteristic

避雷器内装具有优良非线性伏安特性的氧化锌压敏电阻片（其V-A 特性如图1所示）

，在正常工作电压下呈高阻，泄漏电流仅微安级； 过电压袭来时

立即转为低阻，释放能量，并限制过电压幅值；过电压消失后又立即恢复高阻，保证电力系统正常运行。

由于氧化锌的这一优良特性，使避雷器动作迅速，性能稳定，结构简单，体积重量减小，维护简便，通流容量大，残压低，寿命长。

The zinc oxide varistor flake installed within arrester has excellent nonlinear volt-ampere characteristic (its

V-A characteristic is shown as fig.1). In normal operating

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