30 630kv однофазный Два обмотки Номера Захватывающие Рег

OIL-IMMERSED TRANSFORMER, 30 630KV SINGLE-PHASE TWO WINDING NON-EXCITING REGULATION FULLY SEALED DISTRIBUTION TRANSFORMER Rated high voltage:11, 11.5KV High voltage tapping range: ±5%, ±2X2.5% Rated low voltage: 0.22, 0.23, 0.24kv Oil-immersed power transformer specification Product Standards:GB1094.1 PART ONE GENERAL PRINCIPLES GB1094.2 PART TWO TEMPERATURE RISE GB1094.3 PART THREE INSULATION LEVEL, INSULATION INSPECTION, AND EXTERNAL INSULATION AIR GAP GB1094.5 PART FIVE THE ABILITY TO BEAR SHORT-CIRCUIT GB/T6451-2008 Oil-immersed power transformers technical parameters and requirements (Instead of GB/T6451-1999)Rated capacity: 30 10000kVA Frequency : 50Hz60Hz Rated high voltage:10 (11,10.5,6,6.3,6.6), 35kV Rated low voltage:0.4kV Scope of high pressure tap:±5%,±2×2.5%,±4×2.5% Connection set: Dyn11 or Yyn0 number of phase :3 Three or single Regulator approach: excitation voltage regulator or on-load voltage regulationTemperature rising limit: oil temperature rising≤55K Average winding temperature rise≤65K Cooling method: ONAN oil-immersed natural cooling, ONAF forced air cooling Normal using conditions: outside or inside The altitude of installation site can not be over 1000M,thealtitudeof high pressure model installation site can not be over 4000m environment temperature between +40oC to -30oC Relative humidity 95% The product will be design according to customer's requirements when it is used in non-normal condition. According to customers requirements, the transformers with other voltage class, impedance voltage and connection set would be provided.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, low temperature rise, and low 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 lightning surge Fully 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.