Product Name: YH10WX-108/309 MOA Model: YH10WX-108/309 manufacturers promise: 2 days shipping, 7 days, 15 days replacement, one year warranty. Shanghai Yi Electric Co., Ltd. is well-known in your industry, one of the professional manufacturers of electrical and building electrical accessories, mainly for high pressure MOA research and development and production of domestic and international advanced level, the model is complete, welcome to inquire or purchase. The company also produces high-voltage current-limiting fuses, high-voltage load switch, high voltage insulators, high voltage surge arresters, wall bushing, a series of high and low voltage vacuum circuit breakers and other electrical products! MOA, the basic principle is sealed in porcelain jacket zinc oxide valve. Zinc oxide valve is ZnO as the base, add a small amount of Bi2O3, MnO2, Sb2O3, Co3O3, Cr2O3 and other non-linear resistor made of silicon carbide having a much better than non-linear volt-ampere characteristics, continuous operating voltage Only flowing microampere leakage current, after the action no freewheeling. So MOA does not require a spark gap, thereby simplifying the structure and has the fast response, resistance to multiple lightning over-voltage or over-voltage action operation, the energy absorption capacity, good anti-contamination performance. Since the MOA protection superior to silicon carbide arrester, has been gradually replace silicon carbide arrester, widely used in AC and DC systems, the protective insulating power generation, substation equipment, is particularly suitable for effectively grounded neutral point (see Power System Neutral Grounding) 110 kV and above power grid. HY5WS-7.6 / 30 zinc oxide surge arresters for protection system rated voltage 10KV power transformers, switchgear, box-type substation, power cable outlet header, column switches and other power distribution equipment oil from the atmosphere and operating over-voltage damage. YH10WX-108/309 MOA use conditions: a) suitable for indoor and outside; b) Ambient temperature -40 ℃ ~ + 40 ℃; c) altitude less than 3000m (porcelain formula does not exceed 1000m); d) Power frequency not less than 48Hz, not exceeding 62 Hz; e) long-term frequency voltage is applied between the terminals of the arrester does not exceed the arrester continuous operating voltage; f) seismic intensity of 8 degrees and the following areas; g) Maximum wind speed does not exceed 35m / s . Note: The company's operating philosophy: "the same product than the quality of the same quality than price, the same price than service, the same service than credibility." Always uphold the "Ming seeking quality and dedication" of the enterprise principles, the eternal "science and technology enterprises, science and technology thriving enterprise" strategy, to play a brand effect, the development of high quality products for the carrier, innovative ideas and the strength of their savings, adhere to dare people first, people-oriented. "