the metal oxide arrester which applies to protect the power equipment like transformers against systerm overvoltages.

     MOA is the most advanced over-voltage protection. ZnO is due to the valve has excellent non-linear sound steep wave impact, with its assembly of over-voltage arrester can be limited to a relatively low level, so as to provide reliable protection to the equipment.

     Compared with porcelain MOA, the composite jacket zero-lash ZnO arrester (hereinafter referred to as HMOA) has more stain resistant, ageing resistant, anti-explosive, anti-ultraviolet capability and smaller size, lighter weight. May reduces the equipment setup area, improves the exterior contamination and the environment condition to its influence.
     After comprehensive researching, we apply the valve plate elements and high performance of the jacket material production of HMOA products from advanced institutes of scientific research., to ensure the reliability of product performance.