... . Tapping Range: ±5%, ±2×2.5%, ±4×2.5% or others5. Frequency: 50Hz; 60Hz6. Phase: three phase7. Connection Sign: Dyn5 ... ,Dyn5,Yyn0, Dyn11 or others8. Short Circuit Impedance: Standard impedance (For details see technical ... strength and anti-shortcut. The tank is bell type or core suspension type, the wall of tank is as wave form. Rated CapacityVoltage ...