Developed with mature technology, our Grade 3 energy-efficiency S(B)13 oil-immersed fully sealed distribution transformer delivers superior performance with energy saving, material saving, environmental protection and low noise. It is widely used in urban and rural industrial and agricultural power grids.

• The core is wound on dedicated equipment using high-quality cold-rolled silicon steel sheet, significantly reducing no-load loss, no-load current and noise.
• HV coils are wound with acetal-enamel round wire or paper-insulated flat wire. Inter-layer double-sided adhesive paper bonds layers together after drying to form an integral HV coil; LV coils above 250A use copper foil winding, greatly improving short-circuit withstand capability.
• The fully sealed corrugated tank isolates transformer oil from ambient air, preventing accelerated aging of insulation materials and extending service life.
• Compact size, light weight, high energy efficiency, economical operation and maintenance-free service — a new generation of energy-saving and environmentally friendly product.

• For transformers rated 500 kVA and below, load loss values above the slash apply to Dyn11 connection group; values below the slash apply to Yyn0 connection group.

Note: Dimensions above are for reference only. Refer to Antai drawings for actual dimensions and installation details.