51KV/35KV polymer housed surge arrester

Metal-oxide Surge Arrester   ApplicationProtection of medium/high voltage AC networks against both,multiple atmospheric and switching overvoltages as well  as Very  Fast Transients  (VFT).Suitable for the  protection  of transformers,transformers  in arc furnace applications, cables,generators,parallel to capacitor banks,and railway vehicles.Can be used mechanically as support insulator or as suspension insulator in case of application as line arrester.Forindoor and outdoor installation.Protection of medium/high voltage AC networks against both,multiple atmospheric and switching overvoltages as well  as Very  Fast Transients  (VFT).Suitable for the  protection  of transformers,transformers  in arc furnace applications, cables,generators,parallel to capacitor banks,and railway vehicles.Can be used mechanically as support insulator or as suspension insulator in case of application as line arrester.Forindoor and outdoor installation. KeystoneThe metal-oxide surge arrester(MOSA)is the most advanced overvoltage protector in the word.Due to make the varistor of core com-ponent mainly adopt MOSA.Compared with the conventional silicone carbide arrester,this prescription of the product improves greatly the Voltage-Current(U-I)characteristic of the metal-oxide varistor and increased through-current capability at over-voltage so as to bring a radical-changes for the characteristic of the MOSA.Under the circumstance of normal operating voltage,the currentthrough the MOSA just on microampere degree.When  suffered from overvoltage,the MOSA's excellent non-linear characteristic will make the current through the MOSA increase to several thousand ampere,While the MOSA will be under the circulating state and release overvoltage energy so as to  protecting the power transmission equipments against the damage caused by the overvoltage. Usual service conditiona)Ambient air temperature within the range of-55℃ to +50℃。b)Altitude not exceeding 2000m.c)Frequency of the A.C.Powersupply not less than 48Hz and not exceeding 62Hz.d)Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage.e)Maximum wind speed not exceeding 35m/s.f)Earthquake intensity not exceeding 7 degrees. AdvantageCXIYA MOSAJ-Low residual voltage-Long protection distance-High energy input capacity-Stable U-I characteristic even after multiple strokes-Proof against ageing-Explosion and shatter-resistant design-Pollution resistantand  UV-stable-Housing resistant to rough handling-Maintenance free-Stable against shock and vibration-High mechanical resistance  Technical PerformanceThe technical performance of metal-oxide surge arrester is accord with IEC60099-4,IEEE(ANSI)C62.11 and Gb11032