... , underground power station, laboratories, stations, terminals, airports, substations and other combinations.Welcome inquiry!Main Specifications:1. Voltage class: 6-35KV 2. ... Model of voltage regulation: Off-excitation or on-load tap changer 3. Tapping range: 5%, 2x2.5%, 4. Power ... Capacity: 10-4000kVA 5. Frequency: 50Hz or 60HZ 6. Phase No.: Single phase or three ...