Safe & eco-friendly, non-flammable: No insulating oil, zero risk of oil leakage, fire or explosion with outstanding fire resistance.
Low maintenance: No oil sampling or oil replacement required, less routine inspection work.
Compact structure: Suitable for indoor installation and can be placed near load centers.
Moisture & dust resistance: Epoxy cast type withstand condensation, applicable in humid and dusty environments.
Low noise: Quiet operation, ideal for noise-sensitive areas such as residential buildings.
Notes: Higher purchasing cost than oil-immersed transformers at the same kVA rating; limited heat dissipation for large capacity and weaker overload capability.
Dry-Type Transformer Types and Technical Parameters
(Cast Resin / Vacuum Pressure Cast / Amorphous Core)
| Maximum Rated Capacity | Up to 30 MVA |
|---|---|
| Primary Voltage | 10 kV, 11 kV, 13.8 kV, 15 kV, 20 kV, 33 kV, 34.5 kV, 35 kV, 66 kV, 69 kV |
| Transformer Core Material | Silicon steel or amorphous alloy core |
| Transformer Winding Material | Copper or aluminum |
| Enclosure Protection Rating | IP00–IP33 |
| Enclosure Material | Aluminum alloy or stainless steel |
| Transformer Standards and Energy Efficiency Requirements | IEC 60076; ANSI/IEEE C57; BS Standards; NEMA Standards; EU Ecodesign Regulation 548/2014, Tier 2; DOE 2016 Standards |
Indoor power distribution for high-rise buildings, offices, shopping malls, hospitals, metro and tunnels
Power supply for data centers, computer rooms and EV charging stations
Offshore platforms, ships, chemical plants and other sites with strict fire requirements
Indoor substations in urban core areas
Distribution for indoor grid connection of solar and wind power
Densely populated areas and underground power rooms
