Can three phase dry type transformer be installed in the open air?

Three phase dry type transformer cannot be installed in the open air, which is very dangerous. Dry-type transformers must be installed in a dry place during operation, so they cannot be installed in the open air.

It must be protected by a distribution box, the protection level is IP54 or higher, and the transformer is not likely to get wet. In addition, the distribution box needs to consider heat dissipation, even when the outside air temperature is higher, the temperature of the distribution box can be guaranteed to be lower than the operating environment of the transformer; of course, other factors such as altitude must be considered.

Three phase dry type transformer are widely used in local lighting, high-rise buildings, airports, terminal CNC machinery and equipment, etc. Simply speaking, dry-type transformers refer to transformers whose iron cores and windings are not immersed in insulating oil. Cooling methods are divided into natural air cooling (AN) and forced air cooling (AF). Under natural air cooling, the transformer can run continuously for a long time under the rated capacity. When forced air cooling, the output capacity of the transformer can be increased by 50%.

It is suitable for intermittent overload operation or emergency accident overload operation; due to the large increase in load loss and impedance voltage during overload, it is in a non-economic operation state, so it should not be in continuous overload operation for a long time. Three phase dry type transformer are mainly divided into three types: open type, closed type and pouring type.