Oil immersed transformers have a wide capacity and voltage coverage, and are suitable for the backbone of the power grid

Wide coverage of capacity and voltage, suitable for the backbone of the power grid

It can manufacture tens of MVA to thousands of MVA capacity, 500kV/750kV/1000kV ultra-high voltage level.

Dry type transformer mainstream ≤ 20MVA/35kV, preferred for high voltage and large capacity scenarios.

Good economy, high cost-effectiveness with large capacity

Under the same capacity, the cost of oil immersed type is 30%~50% lower than that of dry type, and the advantage is significant when ≥ 1MVA.

Mature technology, simple structure, standardized manufacturing process, and low mass production cost.

Low operating losses and significant long-term energy-saving benefits.

Long service life and high long-term reliability

Sealed to isolate air and moisture, delaying insulation aging.

Under normal maintenance, the lifespan is 25-40 years, which is higher than that of dry type (about 20 years).

Vacuum drying/oil injection process, with extremely low internal moisture and longer insulation life.