High insulation rating IEC60076 Three-Phase Oil type Step-Up with conservator Transformer 500kVA 0.69kV 11kV for Solar PV Power Plants Industrial Step-Up and Grid Distribution OEM
Trasformatore in olio da 500 kVA conforme a IEC60076 con elevato grado di isolamento per impianti solari fotovoltaici. Presenta un design a prova di esplosione, rumore ≤55 dB e personalizzazione OEM. Garantisce un incremento affidabile e una distribuzione della rete in ambienti estremi.
500kVA Three-Phase Oil Type Transformer
,Step-Up Three-Phase Oil Type Transformer
,0.69kV Three-Phase Oil Type Transformer

This three-phase oil-immersed step-up transformer features high insulation design and meets IEC60076 standards, ideal for solar PV power plants and various electrification applications. Equipped with a conservator and high-performance insulation materials, it ensures long-term stable operation. OEM customization is available to adjust capacity, voltage levels, and appearance according to client requirements.
- High insulation rating compliant with IEC60076 for safety and reliability.
- Oil-immersed cooling design extends service life and reduces failure rates.
- OEM customization available to meet various capacities and voltage requirements.
- Explosion-proof design and high-temperature self-ignition protection for extreme environments.
- Optimized magnetic circuit improves efficiency and lowers operational energy consumption.
- Easy installation and low maintenance costs, ideal for solar and industrial projects.
| Technical Parameter | Description |
|---|---|
| Rated Capacity | 500kVA |
| Phases | Three-phase |
| Primary Voltage | 0.69kV |
| Secondary Voltage | 11kV |
| Cooling Method | Oil-Immersed ONAN (Oil Natural Air Natural Cooling) |
| Insulation Class | High Insulation (IEC60076 compliant) |
| Short Circuit Impedance | 4% |
| Noise Level | ≤55 dB |
| Temperature Rise Control | ≤65K |
| Conservator | Yes (for oil expansion and overflow protection) |
| Explosion Protection | Pressure relief valve, fire-proof design |
| Operating Temperature | -25°C ~ +45°C |
| Altitude Adaptability | ≤1000m (customizable for higher altitudes) |
| Humidity Adaptability | 95% RH (coastal anti-corrosion materials) |
| Application Scenarios | Solar PV power plants, industrial step-up, grid distribution |







Market Challenges:
Transformers in high-temperature regions (Middle East, Southeast Asia) and coastal humid areas face oil overheating, self-ignition, insulation aging, and corrosion issues, leading to downtime and high maintenance costs.
Our Solutions:
- High-temperature resistant oil and high-quality insulation paper ensure stable operation.
- Conservator with explosion-proof pressure relief valve prevents oil transformer self-ignition and explosion.
- Anti-corrosion coating and moisture-proof design adapt to humid coastal environments.
- Precision magnetic circuit and natural cooling system reduce temperature rise and extend lifespan.
- Optional monitoring system provides real-time oil temperature, load, and humidity monitoring for safe operation.
- Q: Will this transformer corrode in coastal regions?
A: Anti-corrosion coating and humidity-resistant design prevent corrosion from sea air. - Q: Does high temperature affect transformer lifespan?
A: High-temperature resistant oil and insulation materials ensure stable operation up to +45°C. - Q: Is OEM customization available?
A: Yes, capacity, voltage levels, and appearance can all be customized. - Q: Is this transformer suitable for solar PV plants?
A: Absolutely. Designed for PV step-up, it offers high efficiency and strong stability. - Q: What happens in case of overload or short circuit?
A: Built-in protection and pressure relief valves effectively handle overload and short-circuit scenarios. - Q: Is installation and maintenance difficult?
A: Installation is straightforward, and maintenance cycles are long, reducing long-term operational costs.
- 1. Professional 30+ senior engineers offer 24 hours online service and response within 30 min.
- 2. 100,000m² factory, 250+ workers, 30+ senior engineers and 8 production lines, 20000+ sets annual production capacity.
- 3. 100% OQC testing with 8 main detection contents. 15+ years power transformer designing and manufacturing experience.
- 4. Comply with GB 20052-2024/ANSI/IEEE/DOE2016/CSA/IEC60076 standard
- 5. Cross-industry power transformer solution.
- 6. Global on-site technical support.
Customize your reliable oil-immersed step-up transformer today to safeguard your power plant!