1200kVA Photovoltaic Step-Up Transformer 400V To 800V
04-16 2025 | By:
Application of 1200kVA 400V-to-800V Step-Up Transformers in Photovoltaic Systems
With the rapid development of renewable energy, photovoltaic (PV) systems have become a cornerstone of global energy transition. Among critical components, 1200kVA 400V-to-800V step-up transformers play a vital role in enhancing energy conversion efficiency and ensuring grid compatibility. Below is an analysis of their applications and key technical parameters in the PV sector.
1. Core Applications in PV Systems
- Large-Scale PV Power Plants: These transformers efficiently convert low-voltage DC power generated by PV panels (typically 400V) to medium-voltage AC (800V), enabling long-distance transmission with minimized energy loss.
- Distributed PV Systems: In rooftop or small-scale installations, they adapt local PV output to meet grid interconnection standards (e.g., 800V for industrial grids).
- Energy Storage Integration: They facilitate voltage matching between energy storage systems (400V) and grid requirements (800V), ensuring stable power exchange.
- Remote Off-Grid Solutions: In isolated areas, these transformers provide reliable voltage elevation for local power supply networks.
Photovoltaic Step-Up Transformer
2. Key Technical Parameters
| Parameter | Specification | |
|---|---|---|
| Rated Capacity | 1200kVA | |
| Input Voltage | 400V AC (compatible with inverter output) | |
| Output Voltage | 800V AC (suitable for grid transmission) | |
| Frequency | 50/60Hz (adjustable for regional grids) | |
| Efficiency | ≥96% (high-performance copper windings) | |
| Insulation Class | H-grade (resistant to high temperatures) | |
| Cooling Method | Natural/forced air cooling | |
| Short-Circuit Impedance | 4–6% (enhanced safety and stability) |
3. Technical Advantages
- High Efficiency: Full-copper windings and optimized core materials reduce resistive losses, achieving energy conversion rates above 96%.
- Harmonic Suppression: Advanced electromagnetic shielding minimizes harmonic interference, ensuring clean grid integration.
- Environmental Adaptability: Robust designs withstand harsh conditions (e.g., extreme temperatures, humidity) common in PV installations.
- Overload Protection: Capable of handling short-term power fluctuations (e.g., sudden sunlight intensity changes).
4. Challenges and Solutions
- Voltage Stability: Fluctuations in PV output are mitigated through precise winding ratios and dynamic voltage regulation.
- Thermal Management: Integrated cooling systems (e.g., oil-immersed or forced-air designs) prevent overheating during prolonged operation.
- Customization Needs: Manufacturers like Zhuoerfan and Yongsheng offer tailored solutions for diverse grid standards and installation environments.
5. Future Trends
The demand for 1200kVA transformers is expected to grow with the expansion of high-capacity PV systems. Innovations such as smart monitoring interfaces and modular designs will further enhance their adaptability and maintenance efficiency.
The 1200kVA 400V-to-800V step-up transformer is indispensable in modern PV systems, bridging the gap between low-voltage generation and grid requirements. Its combination of efficiency, reliability, and adaptability positions it as a cornerstone of sustainable energy infrastructure. For detailed specifications and case studies, refer to .
You may also find these interesting:
