Dry-type transformers are usually used indoors where fire protection requirements are relatively high. Oil-immersed transformers are usually used outdoors, but of course they can also be used indoors. However, oil-immersed transformers may spray oil and burn when a fault occurs, making it more dangerous to use indoors.
Dry-type transformers generally do not spontaneously ignite, and quality products are flame retardant. The advantages of dry-type transformers are safety and cleanness, but the disadvantages are high price, large floor space, and difficulty in outdoor use; the advantages of oil-immersed transformers are that the voltage level can be very high, the floor space is small, and the range of use is wide, but the disadvantages are Oil leakage and failure will cause pollution to the environment. The two transformers follow different standards, have different temperature rise requirements, and have different structures. It is unfair to compare the heat dissipation performance.
From a structural point of view, oil-immersed transformers have good heat dissipation performance.
1. Oil-immersed transformers have a wide range of applications. Can be indoors or outdoors. Especially suitable for outdoor use.
2. Dry-type transformers are used indoors. Mainly used in particularly important places and high-rise buildings with fire protection requirements, hospitals, airports, stations, subways, large supermarkets and shops, theaters, schools and other places.
3. Oil-immersed transformers have no special requirements for the surrounding environment. Of course, there must be no fire hazard. Dry conversion has certain requirements on the environment, such as not being too humid, not having too much dust and dirty places. Ventilation should be good, etc.
