Dry Type Power Transformer

Our dry type power transformer uses a dry insulation structure designed for low loss, low partial discharge, flame resistance, and short-circuit strength. The enclosure grade can be selected for the station environment. This SW-SCB station-service transformer emphasizes compact indoor installation and low routine maintenance. The high-voltage and low-voltage windings are insulated with dry solid materials, so no oil collection pit or liquid-leak management is required. The core is assembled from low-loss electrical steel and clamped to limit vibration. Depending on capacity and thermal design, cooling is by natural air or fan-assisted air. The product can be supplied with an enclosure, temperature monitor, fan controller, alarm contacts, and communication interface. Selection should consider continuous load, short-time overload, harmonic content, ambient ventilation, altitude correction, insulation class, permissible temperature rise, short-circuit impedance, and coordination with upstream protection. Installation requires dry foundations, unobstructed air passages, correct phase spacing, secure cable support, and reliable grounding of the frame and enclosure. Dust and conductive contamination should be removed periodically because blocked ducts reduce cooling performance.

Electromagnetic induction transfers energy between isolated windings at the specified voltage ratio. The magnetic core guides flux, while the insulation and cooling structure maintain dielectric strength and temperature rise within design limits.