Product Description
S11/S13 silicon steel & S15 amorphous alloy distribution oil immersed transformers are energy-saving core products for municipal grid, industrial and commercial distributed photovoltaic systems. Voltage grades 10kV/20kV/33kV, capacity 30kVA-2500kVA, low no-load loss, strong overload resistance. Equipped with complete protection accessories, comply with IEC & GB standards, widely used in urban communities, factory workshops and rooftop PV projects.
Technical Parameters
| Category | Detailed Specifications |
| Model Series | S11, S13 (Silicon Steel); S15 (Amorphous Alloy) |
| Voltage Grade | HV:10kV/20kV/33kV; LV:0.4kV |
| Frequency | 50Hz / 60Hz for export |
| Capacity Range | 30kVA ~ 2500kVA |
| Connection Group | Dyn11 |
| Short-circuit Impedance | 4% / 6% |
| Cooling Mode | ONAN Oil Natural Air Cooling |
| Oil Type | Standard mineral oil; Natural ester fire-resistant oil optional |
| Tank Structure | Fully sealed corrugated tank, no conservator |
| Overload Capacity | 1.2 times rated load for 2 hours |
| Working Temp | -25℃ ~ +40℃ |
| Key Fittings | Oil level gauge, pressure relief valve, temp indicator, drain valve |
| Standard Complied | IEC 60076, GB/T 6451 |
| Application | Municipal grid, residential area, factory, distributed rooftop PV |
