What is an oil-immersed transformer?

Oil-immersed transformers are power equipment that utilizes insulating oil as both the insulating and cooling medium; they are widely used in power transmission and distribution systems, industrial parks, commercial buildings, new energy projects, and infrastructure construction. Characterized by operational reliability, excellent heat dissipation, strong overload capacity, and a long service life, oil-immersed transformers have become one of the most common types of power distribution equipment in global power systems.

What is the difference between S11 and S13 transformers?

S11 and S13 transformers are widely used three-phase oil-immersed distribution transformers, commonly deployed in industrial parks, commercial buildings, power distribution systems, and new energy projects. While they share similar structural designs and application areas, they differ in terms of loss levels, operating efficiency, and energy-saving performance. Driven by increasing global demands for energy conservation and consumption reduction, the S13 series has emerged as a highly popular, energy-efficient product in the market.