The S20 series energy-saving transformer is a new type of energy-saving transformer launched based on the S11 series, offering superior cost-effectiveness. Compared with the S11 transformer, no-load loss is reduced by 30–40%, and load loss is reduced by 20–30%. This product builds on the company's existing equipment and process capabilities, using high-cost-performance premium silicon steel sheets 23RK090 and above. The core structure primarily adopts 45° fully mitered, five-step stepped joints, with equal cross-sections for columns and yokes. This structure significantly reduces no-load loss and no-load current, meeting the energy-saving requirements of the S20 transformer.

Main Features:

Compared with the S13 transformer, no-load loss is reduced by 30–40%, load loss by 20–30%, improving efficiency, reducing grid losses, and enhancing power supply quality

Energy-saving performance second only to amorphous alloy transformers, but with simple manufacturing, low cost, and high cost-effectiveness

Compared with three-dimensional wound core transformers, maintenance is convenient and user wiring is facilitated

High-voltage coils use oxygen-free copper conductors; low-voltage coils above 200kVA use copper foil wound into layer-type coils, enhancing overall short-circuit withstand capability and improving dynamic and thermal stability

High reliability, stable operation, fully sealed and maintenance-free

S22 series Level 1 energy efficiency oil-immersed distribution transformers can also be produced according to user needs