Transformers
S22-M Oil-immersed Distribution Transformer
Sealed oil-immersed transformer, Grade 1 efficiency per GB 20052-2024.
S22-M is a hermetically sealed oil-immersed distribution transformer with corrugated tank for breathing without moisture ingress. It meets GB 20052-2024 Grade 1 efficiency and is widely used in outdoor substations and rural/urban grids.
Key Technical Parameters
| Rated capacity | 100 / 200 / 400 / 630 / 800 / 1000 / 1250 / 1600 / 2000 / 2500 kVA |
|---|---|
| Primary voltage | 10 kV or 6 kV (±2×2.5%) |
| Secondary voltage | 0.4 kV |
| Vector group | Dyn11 / Yyn0 |
| Cooling | ONAN |
| Standards | GB 20052-2024, GB/T 1094, IEC 60076 |
Structure & Features
- Corrugated fin tank, fully sealed, no oil conservator.
- Copper or aluminum windings per requirement.
Application Scenarios
- Outdoor distribution, residential and industrial power supply.