Product Description
35kV / 110kV large-capacity power oil immersed transformers are specially developed for centralized photovoltaic bases, onshore wind farms and high-voltage substations. Adopt high permeability core and fully sealed oil tank design, stable operation under long-term heavy load. Support on-load tap-changer, natural ester environmental protection oil and customized cooling system, applicable for large-scale new energy power station EPC overseas projects.
Technical Parameters
| Category | Detailed Specifications |
| Voltage Combination | 35±2×2.5%kV / 0.4/0.69/10.5kV; 110±8×1.25%kV / 10.5kV |
| Frequency | 50Hz / 60Hz customized |
| Capacity Range | 3150kVA ~ 50000kVA |
| Tap Changer | Off-circuit tap changer standard; OLTC on-load tap changer optional |
| Connection Group | YNd11 |
| Short-circuit Impedance | 10.5% / 12% / 14% customizable |
| Cooling Modes | ONAN / ONAF / OFAF optional |
| Core Material | High-grade oriented cold-rolled silicon steel sheet |
| Tank & Accessories | Split radiator, conservator, gas relay, winding temperature sensor |
| Working Temp | -30℃ ~ +45℃ |
| Altitude Adaptation | ≤1000m standard; up to 4000m plateau customized |
| Key Features | Heavy load long-term stable operation, natural ester biodegradable oil optional |
| Standard Complied | IEC 60076, IEC 62271 |
| Application | Large PV base, onshore wind farm, regional high-voltage substation, energy storage station |
