Medium-voltage distribution transformers are widely used around the world and serve as essential equipment for converting high voltages to low voltages. They are primarily used for transforming electric energy coming from high-voltage power lines to voltages of up to 1 kV.
The working principle of Hermetically Sealed Oil-Immersed Distribution Transformers is primarily based on controlling the pressure exerted by the oil inside the transformer tank, which varies with temperature changes. These transformers ensure that the pressure of the oil against the transformer tank walls is regulated in response to temperature fluctuations. This mechanism helps to maintain the insulation properties of the oil and ensures the safe operation of the transformer. Hermetically sealed oil-immersed distribution transformers are known for their environmental advantages and their usability for end-users.