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HY5WS配电用

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金属氧化避雷器是国际上90年代的高科技产品。其采用了非线性伏-安特性十分优异的氧气锌电阻片,故而避雷器的徒坡,雷电波,操作波下的保护特性均比传统的碳化硅避雷器有了极大的改善。特别是氧化锌电阻片具有良好的徒坡响应特性,对陡坡电压无迟延,操作残压低,没有放电分散性等优点。从而克服了碳化硅避雷器所固有的因陡坡放电迟延而引起的陡坡放电电压高,操作波放电分散性大而导致操作波放电电压高等缺点,使得陡坡,操作波下的保护裕度大大地提高,而且在绝缘配合方面,能够作到陡坡,雷电波,操作波的保护裕度接近一致,从而对电力设备提供最佳的保护,进而提高了保护的可靠性。氧化锌避雷器同时具有吸收雷电过电压,操作过电压和工频暂态过电压的能力。
????复合外套金属氧化锌避雷器是国际90年代的高科技产品。采用整体硅橡胶模压成型,密封性能好,防爆性能优异,耐污秽免清洗,并能减少雾天湿闪发生,耐电蚀抗老化,体积小重量轻,耐碰撞,便于安装和维护。是瓷套避雷器的更新换代产品。

环境温度:不高于+40℃,不低于-40℃;
海拔高度:不超过2000m;
电源频率:50±2Hz;60±2Hz;
地震强度:7度以下;
最大风速:35m/s;
免清扫条件:中等污秽及以下地区;
对无间隙产品,长期施加的工频电压不得超过避雷器持续运行电压;
对有间隙产品,安装点短时工频电压升高不得超过避雷器额定电压。
长期使用于以下异常条件,避雷器需特别制作,定货时应说明:
温度或海拔超标(高原、热带、寒带、全封闭柜用、靠近电炉等)
使用环境存在严重潮气或腐蚀性气体杂质(水上、盐场、化工厂等);
强紫外线辐射(高原、强日照干旱地区等);
特重污秽地区(矿山工作面、建筑工地工作面等)。

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