What is Difference Between Dry Type Transformer and Oil Type Transformer?
Here introduce us the difference between dry type transformer and oil type transformer.
What is difference between dry type transformer and oil type transformer? Many people can easily confuse dry transformers and oil-immersed transformers, and can't tell the difference between them. Today Purple Power Jun gives you a detailed answer to the difference between the two. In terms of price, dry change is more expensive than oil. In terms of capacity, the large capacity of oil changes more than dry. Dry variation slots required in complex buildings (basements, floors, roofs, etc.) and crowded sites. Oil change is used in a separate substation. The transformer in the box change is generally dry. Outdoor temporary electricity is generally oil-altered. In the construction according to the space to choose dry change and oil change, when the space is large, you can choose oil change, the space is more crowded when the choice of dry change. Regional climate is more humid and sultry areas, easy to use oil changes. If dry change is used, a forced air-cooled device must be provided. So What is difference between dry type transformer and oil type transformer?
1, The appearance of different packaging forms, dry transformers can see directly iron core and coil, and oil transformercan can only see the transformer shell.
2, The lead form of different dry transformers mostly use silicone rubber casing, and oil transformers mostly use porcelain casing.
3, Capacity and voltage different dry transformers are generally applicable to distribution, capacity is mostly below 1600KVA, voltage in 10K, there are individual 35KV voltage levels, but oil transformers can be from small to large to achieve all capacity, voltage levels also achieve all voltage, China is building the UHV 1000KV test line, the use of oil transformers.
4, Insulation and heat dissipation is not the same dry transformer generally with resin insulation, by natural air cooling, large capacity by fan cooling, and oil transformers by insulation oil insulation, by insulation oil in the transformer internal cycle will be the coil generated tropical to the transformer radiator heat.
5, The applicable site dry transformers are mostly used in the need for "fire, explosion-proof" places, generally large-scale buildings, high-rise buildings easy to use, and oil transformers due to "accident" may have oil spewing or leakage, resulting in fire, most of the application of outdoor, and site dug "accident oil pool" site.
6, The load capacity of different general dry transformers should be run at the rated capacity, and oil transformer overload capacity is better. 7, the cost is not the same for the same capacity transformer, dry transformer procurement price than oil transformer price is much higher. Dry transformer models generally start with SC, epoxy resin pouring envelope, SCR non-epoxy resin pouring solid insulation package, SG open different dry transformers mostly use silicone rubber casing, and oil transformers mostly use porcelain casing.
As the above, this is the difference between dry type transformer and oil type transformer. Wish this can help you when you choose the suitable transformer.