50kVA 33kVA 415V High Performance Oil Cooled Transformer
Product Overview
This high-performance oil-cooled transformer is a three-phase, oil-immersed distribution unit designed for reliable step-down or step-up voltage conversion in demanding industrial applications. With rated capacities of 50kVA and 33kVA and a standard secondary voltage of 415V, it delivers stable, efficient power for a wide range of commercial and industrial loads.
Built with high-quality materials and precision engineering, this transformer offers superior thermal performance, long service life, and low maintenance requirements—making it an ideal choice for continuous operation in harsh environments.
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Key Specifications
| Parameter | Details |
| Model | Oil-cooled / Oil-immersed type |
| Rated Capacity | 50kVA / 33kVA (selectable per application) |
| Primary Voltage | Customizable (e.g., 11kV, 6.6kV, 480V, etc.) |
| Secondary Voltage | 415V (three-phase) |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN (Oil Natural, Air Natural) |
| Vector Group | Dyn11 / Yyn0 (optional) |
| Insulation Level | Standard per IEC 60076 |
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Core Features
1. High-Performance Cooling System
The oil-immersed design provides excellent heat dissipation. Transformer oil circulates naturally through the core and windings, transferring heat to the tank surface where it radiates into the surrounding air. This ensures stable operation even under continuous full-load conditions.
2. Premium Materials for Longevity
- Core: High-permeability cold-rolled grain-oriented silicon steel reduces hysteresis and eddy-current losses
- Windings: High-purity oxygen-free copper (≥99.95%) minimizes DC resistance and heat generation
- Insulation: High-grade transformer oil with superior dielectric strength and thermal stability
3. Low Loss & High Efficiency
Optimized magnetic circuit design and premium core materials deliver low no-load and load losses, helping reduce annual electricity costs and improving overall system efficiency.
4. Robust & Durable Construction
- Corrugated tank design absorbs oil expansion and improves cooling surface area
- Full-sealed structure prevents oil oxidation and moisture ingress
- Anti-corrosion painting ensures long-term outdoor service
5. Comprehensive Safety Protection
Equipped with standard accessories including:
- Oil level gauge
- Thermometer (dial type)
- Pressure relief valve
- Buchholz relay (for units ≥ 50kVA)
- Silica gel breather
- Earthing terminals
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Customization Options
We understand that every project has unique requirements. The following options are available:
- Primary voltage (any value within 1kV – 36kV)
- On-load or off-load tap changer
- Vector group configuration
- Mounting dimensions and terminal layout
- Enclosure finish color and protection rating
- Accessories package (rollers, cable boxes, etc.)
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Quick Inquiry
To receive a customized quote, please provide:
1. Required capacity (50kVA or 33kVA, or other)
2. Primary and secondary voltage levels
3. Frequency (50Hz or 60Hz)
4. Installation environment (indoor / outdoor, altitude, ambient temperature)
5. Any special requirements (winding material，tap range, vector group, accessories)
Our engineering team will respond within 24 hours with a solution tailored to your system needs.
Reliable power starts here. Contact us today for your oil-cooled transformer solution.
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