... /1000A impulse current,KV5KA15010KA16020KA17511Switching Current 30/60 Impulse Residual Voltage at 500/1000A Impulse Current as applicable,KV13012Line Discharge ... .Partial discharge in the arrester at 1.05 time continuous <=10operating voltage,PC18Creepage distance,MM1800NOTE:If arrester with procelain housing, type ... both in porcelain housing and polymeric housing. 60KV Composite Surge Arrester