How to Choose a Power Transformer?
2025-08-06
Understanding Power Transformers
A power transformer is an essential electrical device that transfers energy between circuits through electromagnetic induction, enabling efficient voltage conversion for power distribution systems. At Lugao Power, we manufacture high-performance power transformers that meet global standards for industrial, commercial, and utility applications.
This comprehensive guide covers:
✔ Key selection criteria for power transformers
✔ Technical specifications and performance metrics
✔ Lugao Power's product portfolio
✔ Industry-specific applications
✔ FAQ addressing common selection challenges
Key Factors When Choosing a Power Transformer
1. Electrical Parameters
| Consideration | Importance | Lugao Standard |
|---|---|---|
| Voltage Rating | Matches system voltage | Up to 500kV |
| kVA Rating | Determines load capacity | 50kVA-300MVA |
| Impedance | Affects short-circuit current | 4-12% (customizable) |
| Vector Group | Phase relationship | Dyn11, YNd11, etc. |
2. Construction Features
✔ Core Material - Grain-oriented silicon steel (reduced losses)
✔ Winding Conductor - Oxygen-free copper (higher conductivity)
✔ Cooling Type - ONAN/ONAF/OFWF for different cooling needs
✔ Insulation Class - Determines temperature withstand capability
3. Efficiency & Compliance
• IEEE C57.12.00 standards compliance
• Energy Efficiency Class (EE Class 1/2/3)
• Noise Level (<65dB for urban installations)
Lugao Power Transformer Product Line
Technical Specifications Comparison
| Model | Type | Capacity Range | Voltage Class | Efficiency | Dimensions |
|---|---|---|---|---|---|
| LG-DT-1000 | Dry-Type | 100-1000kVA | 11kV/0.4kV | 98.7% | 1500×1000×1800mm |
| LG-OT-5000 | Oil-Immersed | 500-5000kVA | 33kV/11kV | 99.1% | 3000×2000×2500mm |
| LG-RT-10000 | Rectifier | 1000-10MVA | 35kV/0.69kV | 98.9% | 4000×2500×3000mm |
Advanced Features
✔ Smart monitoring IoT-enabled options
✔ Sealed tank for maintenance-free operation
✔ Corrosion-resistant coastal variants
✔ Custom impedance values available
Industry Applications
Power Generation
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Grid substations
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Renewable energy plants
Industrial Use
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Manufacturing facilities
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Mining operations
Commercial Buildings
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Hospitals
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Data centers
FAQ: How to Choose a Power Transformer?
Q: What's the difference between dry-type and oil-immersed transformers?
A: Key differences include:
| Feature | Dry-Type | Oil-Immersed |
|---|---|---|
| Cooling | Air-cooled | Oil-cooled |
| Maintenance | Minimal | Regular oil testing |
| Fire Safety | Non-flammable | Requires containment |
| Efficiency | 98-98.7% | 99-99.5% |
| Best For | Indoor, urban areas | Outdoor, heavy-duty |
Lugao Power provides both types with 20-year design life for reliable operation.
Why Choose Lugao Power Transformers?
✔ 30% lower losses than industry standards
✔ Custom designs for special applications
✔ Global certifications (IEC, IEEE, ANSI)
✔ 5-year warranty on core components
✔ 24/7 technical support
Get Your Custom Power Transformer Solution
For technical specifications or project consultation:
📧 Email: [email protected]
📞 Mobile: +86-18967738388
With 25+ years in transformer manufacturing, I personally guarantee Lugao Power transformers deliver unmatched reliability and efficiency. Contact us today for your power solution needs!