Power Transformer
Product Overview
A static electrical device that transmits AC power between circuits without changing frequency, operating on the principle of electromagnetic induction. Its core function is to step up/down voltage—critical for minimizing energy losses (due to Joule’s effect) during long-distance power transmission, and adapting voltage to meet usage demands in power generation, transmission, and distribution.
Key Specifications:
Rated capacity: Up to 240MVA (technical parameters cover 6300kVA–63000kVA as core models).
Voltage range: 3kV–400kV (common ratings include 33kV, 66kV, 110kV, 200kV, 400kV); typical HV configuration: 110kV±8×1.25%, LV options: 6.3/6.6/10.5/11kV.
Vector group: YNd11 (standard for high-voltage power transformers).
Product types: Covers generator step-up transformers (for renewable energy/nuclear power), transmission network transformers, and small-to-medium distribution transformers; custom manufacturing available for non-standard specifications.
Design Features: Made of high-quality raw materials; optimized for easy installation and low maintenance, ensuring stable performance under harsh weather conditions for long-term operation.
Advantage
Energy Efficiency & Loss Reduction Reduces substantial power losses during long-distance transmission by converting low voltage to high voltage (and vice versa); low no-load loss and load loss (see technical parameters for specific values), aligning with energy-saving requirements.
Reliability & Durability High-quality material selection and rigorous manufacturing processes ensure 24/7 full-load operation; adaptable to unfavorable environmental conditions, with long service life.
Versatility & Customization Meets diverse scenarios (power generation, transmission, distribution); supports customization of non-standard specifications to match customer-specific voltage, capacity, and application needs.
Cost-Effectiveness Low maintenance costs reduce long-term operational expenses; easy installation shortens on-site deployment time and lowers initial setup costs.
Technical Parameter
| Rated Capacity (kVA) | Voltage Combination (HV/LV) | Vector Group | No-Load Loss (kW) | Load Loss (kW, 75℃) | No-Load Current (%) | Short-Circuit Impedance (%) |
| 6300 | 110±8×1.25% kV / 6.3/6.6/10.5/11kV | YNd11 | 10.0 | 36 | 0.80 | 10.5 |
| 8000 | Same as above | YNd11 | 12.0 | 45 | 0.80 | 10.5 |
| 10000 | Same as above | YNd11 | 14.2 | 53 | 0.74 | 10.5 |
| 12500 | Same as above | YNd11 | 16.8 | 63 | 0.74 | 10.5 |
| 16000 | Same as above | YNd11 | 20.2 | 77 | 0.69 | 10.5 |
| 20000 | Same as above | YNd11 | 24.0 | 93 | 0.69 | 10.5 |
| 25000 | Same as above | YNd11 | 28.4 | 110 | 0.64 | 10.5 |
| 31500 | Same as above | YNd11 | 33.8 | 133 | 0.64 | 10.5 |
| 40000 | Same as above | YNd11 | 40.4 | 156 | 0.58 | 10.5 |
| 50000 | Same as above | YNd11 | 47.8 | 194 | 0.58 | 10.5 |
| 63000 | Same as above | YNd11 | 56.8 | 234 | 0.52 | 10.5 |
Application
Power Generation: Generator step-up transformers for renewable energy (e.g., wind, solar) and nuclear power plants, converting low-voltage power from generators to high-voltage for grid transmission.
Power Transmission: High-voltage transmission network transformers (33kV–400kV) for long-distance power delivery, minimizing transmission losses.
Power Distribution: Small-to-medium distribution transformers for industrial plants, utility companies, and large commercial facilities, stepping down high voltage to usable low voltage.