50 2500KVA three-phase two winding non-exciting re

1.Frequency:60Hz or 50Hz 2.Rated high voltage:20,22kV 3.Rated low voltage:0.4,0.415,0.433 kV 4.Scope of high pressure tap:±5%,±2x2.5% 5.Connection set:Dyn11 or Yyn0 6.Number of phase:3 Three 7.Temperature rising limit:oil temperature rising≤55K Average winding temperature rise ≤65K 8.Cooling method:ONAN oil-immersed natural cooling,ONAF forced air cooling 9.normal using conditions1outside or inside 2The altitude of instsllation site can not be over 1000M,the altitude of high pressure model installation site can not be over 4000m 3Environment temperature between +40 to -30 4.Relative humidity 95% 5The product will be design according to customers requirements when it is used in non-normal condotion. 10.According to customers requirements,the transformers with other voltage class,impedance voltage and connection set would be provided. 11.THE CHARACTERISTICS OF OIL-IMMERSED TRANSFORMERS The oil-immersed transformer has good insulation performance,flexible and reliable.It can be made a variety of special-type transformers.It is advanced design and reasonable structure. Also, it is small size,light weight,easy installation,and good economic performance.It is strong ability over charging,low loss,lowtemperature rise,and loe noise.There is reliable shell.It can be run under harsh environment.Using new type machine structure,there are high mechanical strength and strong sudden short-circuit bearing capability.Good insulation and high level impacting lighting surgeFully sealed product,no oil conservator,lowers than similar product.It is used vacuum impregnating oil techniques;fully take off the humidity in oil box.It is non-contact with oil and air completely.It is no need to do oil sample test regularly.