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Oil-immersed transformer and dry-type transformer are commonly used in distribution equipment, so what are the differences between the two commonly used transformers?
The biggest difference between oil-immersed transformer and dry-type transformer is that there is no "oil", and because the oil is liquid, with liquidity, oil-immersed transformer must have a shell, the shell inside is transformer oil, the oil soaked transformer coil, from the outside is not seen the transformer coil; Dry transformer without oil, without the shell, can directly see the transformer coil; Another feature is that oil-immersed transformers have oil pillows on the top, internal storage of transformer oil, but now there are new oil-immersed transformers without oil pillows production.
Oil-immersed transformer in order to heat convenient, that is, for the internal insulation oil flow heat convenient, in the external design of the radiator, just like the heat sink, and the dry type transformer does not have this radiator, heat depends on the fan below the transformer coil, the fan is a little like the household air conditioner indoor machine; Oil immersion type transformer because of the need of fire prevention, general installation in a separate transformer indoor or outdoor, and dry type transformer must be installed in the indoor, general installation in low-voltage distribution room, and low-voltage distribution cabinet installed side by side.
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