ZnO metal oxide varistor is the core element of MOA. Zno varistor is mainly made from Zinc Oxide. Gapless zinc oxide (ZnO) surge arresters are widely used between the phase and ground terminals in the power system.
Why is ZnO used in lightning arresters?
A Lightning arrester is a kind of equipment to protect the machine against the overvoltage impulse. Compared with traditional carborundum, MOV(Metal Oxide Varistor) has greatly mended voltage-current characteristics and improved through-current capability, thereby it will line up protection. According to the surge arrester selection guide, the Gapless zinc oxide surge arrester will use a ZnO metal oxide varistor. Valve-type metal oxide surge arrester will use Sic metal varistor.
We produce a series of ZnO varistors and Sic varistors for polymeric housing surge arresters and porcelain housing surge arresters rating 0.22kv to 1000kv from 1990. Our products have good characteristics for surge arresters. We have an ISO9001-2000 certificate from the International Quality Management System. Good production lines and a complete QC system can guarantee the good quality of products. Contact us for more technical support.
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