20kV High-Voltage Station Service Transformer
SFF-70000/20
Product Overview
High-Performance power transformer designed and manufactured to international standards, suitable for power transmission and distribution systems worldwide.
Get a QuoteTechnical Specifications
| Model | SFF-70000/20 |
| Rated Capacity | 70000/45000-45000 kVA |
| Rated Voltage Ratio | (20±2x2.5%)/10.5-10.5 kV |
| Short-Circuit Impedance | 18%(±5%) |
| Rated Frequency | 50 Hz |
| Connection Symbol | Dyn1-yn1 |
| Insulation Level | LI200LIC220AC85/ LI105LIC115AC45-LI105AC45 kV |
| Cooling Method | ONAF |
| No-Load Loss | ≤36 kW |
| Load Loss | ≤244 kW |
| Temperature Rise Limit | Top Oil: ≤54 Winding Average: ≤64 K |
| Noise (Sound Pressure Level) | ≤79 dB(A) |