Low Voltage Polymeric Metal Oxide Surge Arrester 480V

  Product Description* Brief instructionZinc-Oxide arrester is used for protection of outdoor distribution overhead line, transformer, cable connector and electric equipment from being damaged by lightning Impulse voltage and operated over-voltage.How does ZnO varistor work? ZnO has good non-linear Volt-Ampere characteristics which flowing current is tiny when working under normal voltage. However, when there's over-voltage, its non-linear Volt-Ampere characteristics takes protection effect on leakage and breaking current, as the resistance will decrease rapidly and leak the energy of over-voltage.Products are completely in accordance with IEC60099-4 standard.Our Advantages* Our StrengthMore than 35 years of production experience;Sample order is available;Coustomerization is available.Continuous improvement and perfection of products;High productivity, large spare parts inventory. Design Highlights√ MOV discsHigh quality MOV discs are made in Zhejiang or Chengde China.√ Upper TerminalsMade of Grade 304 stainless steel√ Sealing performance of arresterDuration of 42 hours into hot water around 100ºC√ 100% routine tested for below test itemsReference voltage at D.C. 1mALeakage current in D.C.0.75 U1mAProduct Parameters Electrical characteristicsSpecificationUnitRated voltage of Surge arrreser0.48kVNominal discharge current510kARated frequency50HzMaximum continuous operating voltage0.28kVSteep current impulse residual voltage kV(Crest)Lightning Impulse residual voltage kV(Crest)Switching Impulse residual voltage kV(Crest)Long duration current impulsewithstand voltage150250AHigh current impulses65100kA (Crest)Rated Short-circuit current20 / 12 / 6 / 0.6 ± 0.2kAClass of Surge arresterClass 1 or Class 2 ApplicationDistribution type With or without gapGapless Designation of arresterDesign B     Spare parts   NEMA A or B mounting bracketwith/without Disconnectorwith/without Earth leadwith/without Bird guard capwith/without Line clampwith/without Upper terminal (incoming line) bolt sizeM12 Lower termina (outgoing line) bolt sizeM10     Material   Upper terminalStainless steel 304 HousingPolymer type Color of housingDark grey / light grey VaristorHigh quality zinc oxide varistor Size of Varistor35mm / 38mm /40mm / 42mm     Package   Qty/package1pc/carton   Service conditions  Environment maximum temperature40ºCPollution levelHeavy Altitude≤1000Meter   StandardIEC60099-4:2014 Packaging & Shipping Certifications  /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1