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| Basic Specifications | |
| Rated Capacity | 50kVA - 2500kVA (customizable for larger capacity) |
| Rated Voltage | High voltage (HV): 6kV / 10kV / 35kV; Low voltage (LV): 0.4kV (380V/220V) |
| Frequency | 50Hz / 60Hz (dual-frequency optional) |
| Phase | Three-phase |
| Connection Group | Dyn11 (standard); Yyn0 / Dd0 (optional) |
| Electrical Performance | |
| No-Load Loss | ≤180W (50kVA) - ≤2200W (2500kVA) (meets IEC 60076-11 Class 1) |
| Load Loss (at 1.0 rated current, 75℃) | ≤850W (50kVA) - ≤12500W (2500kVA) |
| No-Load Current | ≤2.5% (50kVA) - ≤1.0% (2500kVA) |
| Short-Circuit Impedance | 4% (50kVA-1000kVA); 6% (1250kVA-2500kVA) (tolerance: ±10%) |
| Insulation Resistance (25℃) | HV-LV & Earth ≥300MΩ; LV-Earth ≥100MΩ |
| Temperature Rise & Heat Dissipation | |
| Temperature Rise Limit | Winding (Class H) ≤125K; Iron Core ≤80K |
| Cooling Method | AN (Air Natural) / AF (Air Forced, optional for ≥1000kVA) |
| Overload Capacity | 120% load for 2 hours; 150% load for 30 minutes |
| Insulation & Protection | |
| Insulation Class | H (up to 180℃) |
| Withstand Voltage (1min, 50Hz) | HV side: 35kV (for 10kV rated); LV side: 6kV |
| Protection Level | IP20 (standard); IP21 / IP30 (customizable) |
| Structure & Environment | |
| Noise Level | ≤55dB (50kVA) - ≤65dB (2500kVA) |
| Working Environment | Temp -25℃~+40℃; Humidity ≤90%; Altitude ≤1000m |
A: They are fire-resistant, environmentally friendly (no oil leaks), require minimal maintenance, and can be installed close to the load center to reduce cable costs.
A: Yes, our epoxy resin cast transformers are moisture-proof and can operate effectively in environments with up to 100% humidity.
A: The standard is Air Natural (AN) cooling. For higher capacities (≥1000kVA), Air Forced (AF) cooling can be added to improve heat dissipation and overload capacity.
A: Yes, while our standard range is 50kVA to 2500kVA, we can provide customized solutions for larger capacity requirements.
A: Our transformers are designed for low-noise operation, typically ranging from ≤55dB for smaller units to ≤65dB for large 2500kVA units.
A: No, due to the moisture-proof properties of the cast resin insulation, it can be resumed immediately without the need for pre-drying.
