The S(F)Z9, 10, 11 series 35kV on-load tap-changing power transformers are energy-efficient transformers independently designed and manufactured by our company. They are widely applicable to medium and large industrial and mining enterprises, as well as 35kV substations. These transformers feature a rational structural design, high operational reliability, notable energy-saving effects, strong overload capacity, and low noise.

The 35kV side of the product is equipped with an on-load tap changer. When the grid voltage fluctuates, the transformer can automatically or electrically switch the taps of the high-voltage winding under normal load operation, stabilizing the secondary output voltage within a certain range. This improves the quality of the power supply voltage, enhances the efficiency of electrical equipment, and ensures the safety and normal operation of the equipment.

Compared to products manufactured according to current national standards, the no-load loss of this series is reduced by an average of 20-30%, and the no-load current is reduced by 50-60%, reaching the advanced level of similar international products.