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) |
Frequently Asked Questions
What is the rated capacity?
The rated capacity is 70000/45000-45000 kVA.
What is the rated voltage?
The rated voltage is (20±2x2.5%)/10.5-10.5 kV.
What is the short-circuit impedance?
The short-circuit impedance is 18%(±5%).
What is the rated frequency?
The rated frequency is 50 Hz.
What is the insulation level?
The insulation level is LI200LIC220AC85/ LI105LIC115AC45-LI105AC45 kV.
What is the cooling method?
The cooling method is ONAF.
Can this product be customized?
Yes. GOHOMIN accepts customization requests for this product, including voltage rating, capacity and enclosure/protection level. Contact us with your specification and we will confirm feasibility and lead time.
What certifications does this product meet?
GOHOMIN products are manufactured to IEC standards and available with CE, UL, RCM, GCC, SIRIM and QUACERT-VCN certification depending on the market and project requirements.
What is the minimum order quantity?
MOQ depends on the product type and specification. GOHOMIN is a factory-direct manufacturer and normally accepts trial orders for project evaluation. Contact us for the specific MOQ of this item.