... A2509Steep current 1/20 impulse residual voltage at 10KA impulse current, KV9910Lightning current 8/20 Impulse Residual ... highest voltage,V<=50017Max.Partial discharge in the arrester at 1.05 time continuous <=10 operating ... voltage,PC 18Creepage distance,MM1007NOTE:If arrester with procelain housing, type code should not include ... housing and polymeric housing. 30KV Composite Surge Arrester