What is the difference between dry type transformers and oil immersed transformers？

The cooling method of the dry type transformer is air self-cooling or forced air cooling, and its heat dissipation method is air passage heat dissipation, which is safe, flame-retardant, fire-proof, pollution-free, can be directly installed in the load center, maintenance-free, easy to install, and comprehensive operating costs. Low. The dry type transformer has good moisture-proof performance and can be operated under 100% humidity. It can be put into operation without pre-drying after outage.

The cooling method of oil immersed transformers is oil circulation cooling, using oil passages to dissipate heat. Each transformer has an oil tank, which is characterized by good heat dissipation. Compared with dry type transformers, it is flammable, does not set fire, requires frequent maintenance, and will cause certain pollution to the environment. Oil immersed transformers are rarely used in high-density areas of stock market disaster. But considering the cost is lower than the dry type. Dry type transformers are recommended when considering safe operation, maintenance costs and environmental protection.

Advantages of dry-type transformers: relying on air convection for cooling, generally used for local lighting and electronic circuits. Transformers such as mechanical equipment, in the power system, generally steam turbine transformers, boiler transformers, ash removal transformers, dust removal transformers, desulfurization transformers, etc. are dry-type transformers, with a transformation ratio of 6000V/400V and 10KV/400V, used for rated voltage 380V load. Simply speaking, dry-type transformers refer to transformers whose iron cores and windings are not immersed in insulating oil.

Dry-type transformers generally have two types of on-load voltage regulation and no-load voltage regulation, dry-type transformer with shell and dry-type transformer without shell. Because dry-type transformers have no oil, there are no problems such as fire, explosion, and pollution. Therefore, electrical specifications and regulations etc. do not require dry-type transformers to be placed in a separate room. 

Specializing in the production of various types of dry-type transformers, oil immersed transformers, products have passed CE, ISO9001 and other certification, stable performance, durable.