2015年7月19日星期日

Zinc Oxide arresters

Zinc blocks hydroxide is an inorganic compound with the chemical formula Zn (OH) 2, are amphoteric hydroxides. Zinc hydroxide by one divalent zinc and two hydroxide ions. At room temperature as a white solid, insoluble in water. It can be applied to the arrester MOA called oxide surge arresters according to the structure can be divided into two categories;
Porcelain jacket; porcelain Glass Coating MOV by anti-contamination performance is divided into four grades, Ⅰ level for the ordinary type, Ⅱ grade for use in moderate polluted areas (creepage distance of 20mm / KV), Ⅲ grade for use in heavy contamination areas (creepage distance of 25mm / kV), grade Ⅳ is for Severely dirty areas (creepage distance of 31mm / kV).
Composite coat; composite jacket MOA is a composite material made of silicone rubber jacket, and use high-performance zinc oxide varistor, using a special internal structure, assembled with advanced technology methods, with silicone rubber material and the zinc oxide varistor dual advantages. This series of products in addition to having all the advantages of porcelain coat MOA, the other having insulation properties, high resistance to contamination performance, excellent explosion-proof performance and small size, light weight, usually maintenance free, unbreakable, reliable sealing, anti-aging Excellent

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