Advantages, disadvantages and differences between dry-type transformer and oil immersed transformer
Writer： Hengfeng you electric Time：2023-04-14 views：times
The oil immersed transformer has the advantages of low cost and convenient maintenance, but it is combustible and explosive.
Due to its good fire resistance, dry-type transformer can be installed in the load center area to reduce voltage loss and power loss. However, dry-type transformer has high price, large volume, poor moisture-proof and dust-proof performance, and high noise.
The oil immersed transformer is gradually withdrawn, and the dry-type transformer is used. The dry-type transformer can be disassembled and transported, which is convenient for cleaning and maintenance. The installation does not need a base, and there is no oil seepage pool.
So how do we distinguish between oil immersed transformer and dry-type transformer in our daily work
First of all, it is easy to distinguish between oil immersed and dry-type transformers in appearance. The biggest difference between oil immersed and dry-type transformers is whether there is oil. Because oil is liquid and has fluidity, oil immersed transformers must have a shell. The inside of the shell is transformer oil, and the coil of the transformer is soaked in the oil. The coil of the transformer can not be seen from the outside, while dry-type transformers do not have oil, so the shell is not needed, The coil of the transformer can be seen directly.
Another feature is that there is oil on the oil immersed transformer, and the transformer oil is stored inside, but now the new oil immersed transformer is also produced without oil. For the convenience of heat dissipation, that is, for the convenience of heat dissipation of internal insulating oil, the oil immersed transformer has designed a radiator outside, just like a heat sink, while the dry-type transformer, But without this radiator, the heat dissipation depends on the fan under the transformer coil, which is a bit like the indoor unit of household air conditioner.
