The S20 series fully-sealed oil-immersed transformer adopts a low-loss design compliant with national energy-efficiency standards. The corrugated tank manages oil expansion without an external conservator, giving strong sealing and weather resistance for harsh environments.
- Model: S11 / S13 / S20 / S22
- Rated capacity: 15–31500 kVA
- Service voltage: 6 / 11 / 20 kV
- Cooling: ONAN
- Sealed, conservator-free design