3 phase cast resin transformer serves indoors for voltage distribution and power transformer, voltage change step up or down. 3 Phase Cast Resin Transformer SC9-50/11-0.4 Rated Capacity: 50KVA Rated Voltage: 11/0.4KV Vecor Group: Dyn11 Impedance Voltage (%): 4% No-load loss: 0.306KW Load loss: 1.053KW Tapping range: +/- 5% or +/- 2 * 2.5% Frequency: 50Hz Number of phases: 3 Cooling method: ANAF Standards: IEC60076 Service conditions 1) Altitude: ≤1, 000m 2) Highest ambient temperature: +50 3) Highest annual average temperature: +20 4) Indoor 5) In special conditions according to users