... ,13.8KV,15KV,20KV,22KV3. Voltage Regulation Mode: No-load tap changing; On-load tap changing4. Tapping Range: ±5%, ±2×2 ... , anti-explosion, and no pollution. Coil is free from humidity, low noise and well characteristic of heating dispersion. Low loss, energy saving, ... Warehouse: 5. Packing: H5-Hot sales 630KVA 11/0.4kV SC(B)10 Series Cast Resin Insulation three Phase Dry type Distribution Transformer