Distribution Three-Phase 50kVA Oil Immersed Power Distribution Transformer
Jan 22, 2026
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Are you seeking a stable and efficient power distribution solution for residential, commercial, or small industrial projects?
As a professional power equipment manufacturer with years of expertise, we specialize in producing the 50kVA Oil Immersed Transformer-a three-phase distribution device designed to convert high voltage to low voltage (typically 10kV to 0.4kV) with minimal energy loss. This transformer ensures consistent power supply for daily operations, making it a core component of modern power grids.
Core Advantages of 50kVA Oil Immersed Transformer
Our three-phase 50kVA Oil Immersed Transformer stands out for its performance and adaptability, addressing the key needs of power distribution scenarios:
- High Energy Efficiency: Complies with IE2 efficiency standards, with no-load loss as low as 120W and load loss at 850W-reducing annual electricity consumption by 10%-15% compared to traditional models.
- Superior Heat Dissipation: Uses high-quality mineral insulating oil as the cooling medium (ONAN cooling method), enabling continuous operation under full load without overheating, even in high-temperature environments.
- Stable Three-Phase Output: The three-phase design delivers balanced voltage, avoiding fluctuations that could damage electrical equipment (e.g., motors, air conditioners, industrial controllers).
- Durable Structure: The iron core adopts high-grade cold-rolled silicon steel sheets (30Q130 grade) to reduce magnetic loss; the tank is made of 3mm thick galvanized steel with anti-corrosion coating, suitable for outdoor installation.
- Low Maintenance: The sealed oil tank design minimizes oil evaporation and contamination, requiring only annual oil sampling and testing-lowering long-term operational costs.
Technical Specifications of Three-Phase 50kVA Oil Immersed Transformer
To meet global power grid standards, our 50kVA Oil Immersed Transformer follows strict technical parameters. The table below outlines its key specifications:
| Parameter | Specification |
|---|---|
| Rated Capacity | 50kVA |
| Phase Configuration | Three-phase, four-wire (3P4W) |
| Primary Voltage | 10kV (Customizable: 6kV/20kV) |
| Secondary Voltage | 0.4kV (400V) |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Class | Class A (Max temperature resistance: 105°C) |
| Temperature Rise | ≤55K (Top oil) / ≤80K (Winding) |
| Protection Level | IP23 (Dust-proof, splash-proof) |
| Connection Group | Dyn11 (Standard; Yyn0 optional) |
| Weight | Approximately 820kg |
| Overall Dimensions (L×W×H) | 1480mm × 980mm × 1350mm |
| Noise Level | ≤52dB (At 1m distance) |
Typical Application Scenarios of 50kVA Oil Immersed Transformer
The three-phase 50kVA Oil Immersed Transformer is widely used in scenarios requiring stable medium-scale power distribution:
- Residential Communities: Supplies power to 200-300 households, supporting simultaneous use of air conditioners, refrigerators, and home appliances.
- Commercial Districts: Powers small shopping malls, office buildings, and hotels, handling mixed loads from lighting, elevators, and HVAC systems.
- Small Industrial Plants: Supports light manufacturing (e.g., textile workshops, food processing facilities) with power for production machinery and control systems.
- Rural Power Grids: Connects to rural high-voltage lines, converting 10kV to 0.4kV for villages, farms, and agricultural irrigation equipment.
- Infrastructure Auxiliary: Provides power for road toll stations, small communication base stations, and water treatment pump rooms.
Quality Control and Certification
We adhere to strict quality standards to ensure the reliability of every 50kVA Oil Immersed Transformer:
Raw Material Screening: Key components (copper windings, silicon steel sheets, insulating oil) are tested by third-party laboratories to meet IEC 60076 standards.
Production Precision: Uses automated winding machines (tolerance ±0.1mm) and laser cutting for the tank, ensuring consistent component quality.
Mandatory Testing Before Delivery: Each transformer undergoes:
- Insulation resistance test (≥1000MΩ at 25°C)
- Temperature rise test (full load for 8 hours)
- Short-circuit withstand test (1.5× rated current for 2 seconds)
- Oil dielectric strength test (≥35kV)
International Certifications: Complies with CE, IEC, GB/T 6451, and ANSI standards, suitable for global markets.
Conclusion
The 50kVA Oil Immersed Transformer is a cost-effective and reliable choice for three-phase power distribution, meeting the needs of residential, commercial, and small industrial users. Its high efficiency, durable design, and stable performance ensure long-term value and seamless power supply.
If you are planning a power distribution project, please Contact us for the latest 50kVA Oil Immersed Transformer price list and technical datasheet. Our team will customize the product according to your voltage, installation environment, and load requirements.