Surge Arrester 36KV HIGH VOLTAGE SURGE ARRESTER Product Picture Features Better Electrical performance & reliability Ease of Installation-Light weight & smaller size Better Operating conditions Explosion & shatter proof & less mechanical damage to nearby equipment Better performance in polluted environment Vandalism resistant Free from Moisture ingress Higher safety Higher mechanical strength Insensitive to UV radiation High resistance to Ozone & Corona Excellent Tracking resistance Product Size Condition of Use The ambient air temperatures is no higher than 40鈩? no lower than -40掳鈩?/p> The altitude above sea level dose not exceed2000m AC system frequency is 50Hz or 60Hz AC voltage brought to bear on arrester for a long time does not exceed arrester鈥檚 continuous operating voltage. Maximum wind speed dose not exceed 35m/s The earthquake intensity does not exceed 7 degrees.Surge Arrester website:http://www.cowinelectrical.com/lightning-arrester/surge-arrester/