To ensure maximum lifespan and capacity out of your general-purpose dry-type transformer, follow these critical indoor installation guidelines:

1) Ventilation & Clearances: Dry-type transformers rely entirely on ambient air to shed heat. You must maintain a minimum clearance of 0.8m to 1.0m from the walls and surrounding switchgears to ensure smooth natural air convection (AN mode). For larger models utilizing forced air (AF), ensure fan intakes are unobstructed.

2) Room Exhaust Systems: The electrical room cannot be fully sealed. It must have adequate louvers for natural cross-ventilation. For high-capacity units (≥800kVA), the room must be equipped with active exhaust fans placed near the ceiling to expel the rising hot air, keeping the ambient room temperature strictly below 40℃.

3) Proper Enclosure Selection: If the electrical room is clean, secure, and restricted to qualified personnel, an open unit (IP00) provides the best cooling. If the room is shared, dusty, or has rodent risks, you must order the transformer with an IP20 (standard mesh) or IP40 (solid metal) protective enclosure, ensuring the cable entry ports are properly sealed post-installation.

General dry type electrical transformers use air for cooling without flammable insulating oil. They feature low fire risk, small pollution and simple maintenance. They can be installed indoors, close to load points. They have stable performance and strong resistance to humidity and dust, widely used in commercial buildings, hospitals and subway power supply systems.

Our general dry type electrical transformers adopt high-quality epoxy resin insulation materials. The windings are cast integrally under vacuum condition. This structure helps reduce partial discharge and improve mechanical strength. The material is flame-retardant and anti-cracking, which can adapt to different ambient temperatures and ensure long-term stable operation under normal working conditions.

General dry type electrical transformers are suitable for working environments with ambient temperature between -20℃ and +40℃. The altitude of the installation site should not exceed 1000 meters. The site shall keep good ventilation and avoid corrosive gas, conductive dust and heavy vibration. If working beyond these limits, parameter adjustment is needed before order confirmation.

Yes, we can customize general dry type electrical transformers on voltage ratio, rated capacity and tapping range according to customer’s power project demands. We also support different protection casing options. Customers need to provide detailed parameters such as load type, working frequency and installation condition, so we can confirm the most suitable transformer design scheme.