FAQ 1. Is a dry-type transformer safer than an oil-immersed transformer? Dry-type transformers are often preferred for indoor and personnel-intensive locations because they do not use insulating oil. This reduces the risks of oil leakage and liquid fire. However, both transformer types can operate safely when properly selected, installed, and maintained. 2. Can a dry-type transformer be installed outdoors? Yes. A dry-type transformer can be installed outdoors when it is equipped with a suitable weather-resistant enclosure. The design should consider rain, dust, condensation, corrosion, ventilation, and ambient temperature. 3. Can an oil-immersed transformer be installed indoors? Yes, but the installation may require fire-resistant rooms, oil containment facilities, ventilation, fire separation, and compliance with local safety regulations. 4. Which transformer is more economical? Oil-immersed transformers usually have a lower initial purchase price. Dry-type transformers may reduce fire protection, oil maintenance, and environmental management costs. Buyers should compare the total project cost rather than only the equipment price. 5. Does a dry-type transformer require maintenance? Yes. Dry-type transformers require less maintenance than oil-immersed transformers, but they still need regular cleaning, temperature monitoring, connection inspection, insulation testing, and ventilation checks. 6. Which transformer is better for a data center? Dry-type transformers are commonly selected for data centers because they provide oil-free operation, lower fire risk, convenient indoor installation, and reduced maintenance requirements. 7. What information is required for a transformer quotation? Buyers should provide rated capacity, primary voltage, secondary voltage, frequency, vector group, impedance, winding material, installation environment, applicable standard, quantity, and required delivery time.