800V to 35kV 20MVA Solar Step-Up Power Transformer
01-13 2026 | By:
Product Overview
The 800V–35kV 20MVA solar step-up power transformer is a key grid connection equipment in photovoltaic power plants. It converts low-voltage inverter output (800V) into medium-voltage transmission voltage (35kV), ensuring efficient and stable power delivery to the collection station and grid system.
Manufactured by Ztelec Yuguang Power Transformer Factory, this transformer is specially designed for PV applications with high harmonic content, frequent load fluctuations, and outdoor installation requirements.
Designed for Solar Power Plants
This transformer is widely used in:
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Utility-scale PV power stations
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Solar inverter boosting systems
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PV collection substations
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Hybrid solar + energy storage projects
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EPC turnkey solar projects
Key Technical Features
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Special winding design for inverter harmonics
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Low-loss amorphous or silicon steel core option
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High thermal stability insulation system
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Excellent short-circuit withstand capability
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Anti-corrosion outdoor tank structure
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Low noise operation suitable for solar plants
Testing & Factory Laboratory Verification
Each transformer is fully tested in Ztelec Yuguang certified laboratory, including:
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Winding resistance test
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Ratio and vector group test
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No-load and load loss test
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Harmonic performance verification
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Insulation resistance test
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Induced and applied voltage test
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Oil breakdown voltage test
All tests comply with IEC 60076, IEEE, and GB standards, with complete test reports provided before delivery.
Certifications
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ISO 9001 / ISO 14001 / ISO 45001
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IEC / ANSI standard compliance
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Utility grid code adaptation
Typical Technical Parameters
| Item | Specification |
|---|---|
| Transformer Type | Oil Immersed Solar Step-Up Transformer |
| Rated Capacity | 20 MVA |
| Primary Voltage | 800 V |
| Secondary Voltage | 35 kV |
| Frequency | 50 / 60 Hz |
| Phase | Three Phase |
| Cooling Method | ONAN / ONAF |
| Vector Group | Dyn11 / YNd11 |
| Impedance | 8% – 12% |
| Tap Changer | Off-load / OLTC |
| Insulation Level | IEC / ANSI |
| Ambient Temperature | Up to 50°C |
| Standard | IEC 60076 / IEEE |
Why Choose Ztelec Yuguang
Ztelec Yuguang Power Transformer Factory is a professional manufacturer specializing in renewable energy transformers. With rich export experience and strict quality control, we provide reliable transformer solutions for global PV projects.
Procurement Invitation
If you are sourcing a 20MVA solar step-up transformer (800V–35kV) for your photovoltaic power plant, Ztelec Yuguang is your trusted factory partner.
📩 Contact us now to receive:
✔ Technical drawings
✔ Data sheet
✔ Factory test report
✔ Competitive quotation
✔ Fast delivery schedule
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