power transformer

power transformer Functional characteristics Rated Capacity (KVA): 10 63000 KVA Connection: Dyn11, Yyn0, yd11, Ynd11(Or as customer requirement) Impedance Voltage (%): 4%, 4.5% (Or as customer requirement) Rated voltage: H. V.: 6, 6.3, 10 KV (Or as customer requirement) L. V.: 6, 0.4 KV (Or as customer requirement) Tapping range: +/- 5% or +/- 2 * 2.5% (Or as customer requirement) Frequency: 50Hz Number of phases: 3 Cooling method: ONAN or ONFN Temperature rise limits: Winding ≤ 65K Top oil ≤ 60K Standards: GB1094 Power transformer GB/T6451 Technical data & requirement of three-phase oil immersed power transformer IEC60076 Power transformerService conditions The height above the sea level is below 1000m; Ambient temperature: Highest air temperature +40 degree; Highest daily average air temperature+30 degree; Highest annual average air temperature +20 degree Lowest outdoor air temperature -25 degree;