Dry type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC mechanical equipment, and other places. Simply put, dry type transformers refer to transformers whose iron cores and windings are not immersed in insulating oil.

The cooling methods are divided into natural air cooling (AN) and forced air cooling (AF). During natural air cooling, the transformer can operate continuously for a long time at its rated capacity. When forced air cooling is applied, the output capacity of the transformer can be increased by 50%. Suitable for intermittent overload operation or emergency accident overload operation; Due to the significant increase in load loss and impedance voltage during overload, it should not be operated continuously for a long time in a non economic state.