120MVA ARC Furnace Transformer with OLTC

120MVA ARC Furnace Transformer with OLTC: Normal Voltage 36KV 50Hz Operating Voltage 33 kV ±10% 50Hz Oil Pumps Voltage 400V 50Hz 3 Phase Tap-changer Operating Voltage 115V AC 50Hz Spacer Heater 220V AC 50 Hz Lighting 220V AC 50 Hz Protection Contact Voltage 110V DC PLC signals PLC 24V DC 1.1.2 TRANSFORMER DATA Operating Voltage 33 KV±10 Frequency 50Hz±1 Rated capacity 120MVA Rated primary current 2008A Insulation Level (AC/LI) 85/200 kV Vector group D/d0 OPEN Secondary connection Delta open System short circuit capacity at 33kV side.1800 MVA Secondary outlet Copper Plate Bus bar as arrangement on top of the tank, to fit to existing as to customer provided drawings.Max. Secondary current About 74083 A Secondary voltage range 1143-549.3 V. Similar to issued name plate:Current Voltage Power for all taps would be clarified after order design. a) Constant power 1143V-935V at 120MVA b) Constant current About 74083A within 935.2V-549.3V c) Short-circuit voltage 8.4% (at 1143V,120MVA) 12.12% (at 935V,120MVA) 17.73% (at 549V,70MVA) Type of tap changer On load tap-changer: MIII-600Y/72.5C-12233W