Detailed Product Description Key Specifications/Special Features: Capacity range: 5 to 10, 000KVAHigh voltage: 6, 10, 20, 35 and 110KVFrequency: 50 to 60HzLow voltage: 0.4kVConnection group: Dyn11 or Yyn0Phase: 3-phase or single phaseTap changing method: Off circuit