S11, S13, S20, S22 Type Oil Immersed Power Transformer

The S11, S13, S20, S22-M series fully sealed oil-immersed power transformer developed and produced by our company has the advantages of low loss, low noise and high efficiency, which can achieve good energy-saving effect and reduce pollution. Fully sealed transformer and ordinary oil-immersed transformer, compared with the elimination of the oil storage cabinet, oil volume changes by the corrugated oil tank corrugated sheet of the elasticity of the automatic adjustment to compensate for the transformer isolated from the air to prevent and slow down the deterioration of the oil and the aging of the insulation, enhance the reliability of the operation, the normal operation of maintenance-free.

• S— Three-phase
• 11 / 13 / 20 / 22— Performance level designator
• M— Fully sealed
• □— Rated capacity (KVA)
• □— Voltage level (KV)

• Transformer core is made of high quality cold rolled silicon steel sheet stacked together, greatly reducing no-load loss and no-load current, and the core is tied to ensure that the core of the tightness and reduce noise.
• High-voltage and low-voltage windings are wound with oxygen-free copper, and the low-voltage winding is of layer-cylinder structure for 315KVA and below. 400KVA and above low-voltage is of foil-winding structure, and the high-voltage winding is of multi-layer-cylinder structure.
• Transformer connecting group adapts Dyn11 to reduce the impact of harmonics on the power grid and improve the quality of power supply.
• Transformer is fully sealed structure, prolonging service life, free of core lifting, free of maintenance.
• The measured noise value is lower than the standard. After normal transportation, this series of transformers can be put into operation without core lifting and checking, installing relevant parts and components, carrying out acceptance project test, and passing the test.

S11, S13, S20, S22 type 10KV double winding series main product performance parameters

Note 1: For transformers with rated capacity of 500KV·A and below, the load loss values above the diagonal line in the table are applicable to Dyn11 coupling group, and the load loss values below the diagonal line are applicable to Yyn0 coupling group.
Note 2: When the annual average load ratio of the transformer is between 30% and 36%, the highest operating efficiency can be obtained by adopting the loss values in the table.

• Maximum ambient temperature: +40℃
• Minimum ambient temperature: -25℃
• Altitude: < 1000m
• Maximum monthly average relative humidity: 90% (at 20℃)
• Installation site: indoor or outdoor places without fire, explosion hazard, severe pollution, chemical corrosion and violent vibration.

• GB 1094 Power Transformer
• GB/T 15164 Load Guide for Oil-immersed Power Transformers
• GB/T 6451 Technical parameters and requirements for three-phase oil-immersed power transformers
• GB 2536 Transformer oil
• GB 311.1 Insulation fit for HV power transmission and transformation equipment
• JB/T 501 Power transformer experiment guidebook
• GB 10237 Power transformer insulation level and insulation test air gap of external insulation
• DL/T 572 Transformer operation regulations
• GB 20052 Power Transformer Energy Efficiency Limit Values and Efficiency Classes