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Types of high-voltage test transformers?

time:2021/10/17   source:华天电力  reading:245 time

At present, there are many types of transformers on the market, and the advantages and disadvantages of different types of transformers are not the same. Generally speaking, when we choose to test transformers, many people will choose oil-immersed test transformers, and there is a dry-type test transformer. What is the difference between an oil-immersed test transformer and a dry test transformer?


Generally, oil-immersed test transformers are flammable liquids, usually mineral oil, but some other liquids can also be used. Oil-immersed test transformers do not use flammable liquids, and use strong insulating materials to increase the cooling working temperature. Generally speaking, many people think that dry-type test transformers are better than oil-immersed test transformers, but this is not the case. Different companies have different requirements during testing, so they choose different transformers. Judging from the overall sales situation in the current market, oil-immersed test transformers are more popular than dry-type test transformers. The oil-immersed test transformer is durable, reliable, and has strong overload capacity.


Flammable liquids suitable for outdoor locations can be used to cool oil-immersed test transformers, so they are relatively limited. But at present, oil-immersed test transformer technology has made certain progress, replacing flammable fuel and more stable liquid products. When used, there will be strict environmental protection standards. No matter what type of liquid oil or liquid transformer is used, due to the cooling effect of the liquid, it can provide a better cooling effect than the dry-type test transformer. However, a more thorough and efficient cooling mechanism converts to a smaller and more compact unit. When using an oil-immersed test transformer, in addition to cleaning and general inspection, it is necessary to pay attention to maintenance and regular oil.


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