金属氧化物避雷器(MOA)是用于保护输变电设备的绝缘免受过电压危害的重要保护电器，它具有响应快、伏安特性平坦、性能稳定、通流容量大、残压低、寿命长、结构简单等优点，广泛使用于发电、输电、变电、配电等系统中。
Metal oxide arrester (MOA) is an important protective device used to protect the insulation of transmission zhipin.07858.net tongdiaow.71ix.com xiaoduqi.71ix.comsuliaodai.37ix.com.cn jianchajing.37ix.com.cntangshan.75ix.cnand transformation equipment from overvoltage. It has the advantages of fast response, flat volt-ampere characteristics, stable performance, large current capacity, low residual voltage, long life, simple structure, etc. It is widely used in power generation, transmission, substation and distribution systems.
复合外套金属氧化物避雷器是用硅橡胶复合材料做外套，和传统的瓷外套避雷器相比，具有尺寸小、重量 轻、结构坚固、耐污性强、防爆性能好等优点。
Composite coat metal oxide arrester is made of silicone rubber composite material. Compared with traditional ceramic coat arrester, it has the advantages of small size, light weight, strong structure, strong pollution resistance and good explosion-proof performance.