Dry Types 3 Phase Indoor Epoxy Resin Electrical Transformer

◦ Indoor transformers: They are usually smaller and more compact in size to adapt to the limited space of indoor environments. Their appearance is often more refined, with a focus on coordinating with the indoor decoration.

◦ Outdoor transformers: They are generally larger and more robust, designed to withstand harsh outdoor environmental conditions. They usually have a more rugged casing to protect against impacts, moisture, and other factors.

◦ Indoor transformers: They are installed in relatively protected indoor environments, so they generally have a lower protection level. For example, an IP20 protection level is sufficient to prevent large - sized foreign objects from entering.

◦ Outdoor transformers: They need to have a higher protection level to deal with various outdoor weather conditions. Common protection levels include IP54 or IP65, which can effectively prevent dust, water jets, and even temporary submersion.

◦ Indoor transformers: They often use natural air cooling or forced air - cooling methods. Since the indoor environment has relatively stable temperature and humidity conditions, these cooling methods can effectively dissipate heat.

◦ Outdoor transformers: In addition to air cooling, some outdoor transformers may also use oil - immersed self - cooling or oil - immersed forced - cooling methods. This is because outdoor environments may experience higher temperatures and larger temperature differences, requiring more efficient cooling to ensure the normal operation of the dry transformer.

◦ Indoor transformers: The insulation requirements are relatively lower because the indoor environment is dry and free from pollution. They can use common insulation materials to meet the insulation performance requirements.

◦ Outdoor transformers: They need to have better insulation performance to withstand the effects of moisture, pollution, and high - voltage surges in outdoor environments. Special insulation materials and insulation structures are often used to improve the insulation reliability.

◦ Indoor transformers: They are mainly used in places such as residential buildings, commercial buildings, office buildings, and factories, where the space is relatively enclosed and protected. They are used to provide power for indoor electrical equipment.

◦ Outdoor transformers: They are widely used in outdoor substations, power distribution stations, and rural power grids. They can be installed in open - air environments to transmit and distribute electricity over long distances.