constant voltage transformer High voltage transformer 10kV-35kV 0.63~10MVA S9~S13 transformer Constant Voltage TransformerService conditions 1) Altitude: ≤1, ... copper3.Multilayered cylindric structure for high-voltage winding, toroidal structure for low-voltage winding, fine performance4.New ... 10.5, 11,35kV,Tapping range: ±5%Secondary voltage: 3, 3.15, 6.3kVConnection group: Yd11 ...