What are the disadvantages of dry-type transformers?

GNEE dry type pad mounted transformer

• High cost: Dry-type transformers are more expensive to purchase and operate.

• Difficult to maintain: It needs to be shut down for maintenance, and failure is equivalent to direct scrapping.

• Volume: With the same rated power and rated voltage, dry-type transformers are larger and heavier than oil-immersed transformers.

• Poor heat dissipation performance: Since the dry-type transformer is poured with epoxy resin, the heat dissipation performance is relatively poor, and the heat generated by loss must be controlled by the cooling system.

• High noise: If the noise reduction process is not used, the dry-type transformer will have high noise during operation, so the dry-type transformer is generally used indoors.

• Influence on ambient temperature: During operation, copper loss will become heat dissipation and the ambient temperature will continue to rise.

three phase dry type transformer