Different Forms Of Dry-type Transformers

1. Open type: It is a commonly used form. Its body is in direct contact with the atmosphere. It is suitable for relatively dry and clean indoors (when the ambient temperature is 20 degrees, the relative humidity should not exceed 85%). Generally, the air is self-cooling. There are two cooling methods: air cooling and air cooling.
2. Closed type: The device is in a closed shell and has no direct contact with the atmosphere (due to poor sealing and heat dissipation conditions, it is mainly used in mining and is explosion-proof).
3. Casting type: epoxy resin or other resin casting is used as the main insulation. It has a simple structure and small volume, and is suitable for smaller capacity transformers.