35~500kV Oil-immersed Power Transformer
Jan 22, 2026
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Looking for a dependable source for 35 kVA Oil-immersed Transformer and up to 500kVA models? You've found it.
As a leading manufacturer of Oil-immersed Power Transformers in China, GNEE provides factory-direct pricing, rigorous quality control, and extensive customization from 35 kVA to 500 kVA.
This comprehensive guide will detail our product range, key features, technical specifications, and how we ensure value for your power distribution projects.
Who We Are: Your Direct Factory for Oil-immersed Transformers
GNEE is a specialized power equipment manufacturer with a core focus on Oil-immersed Power Transformers. We are not traders; we are the source. Our factory is equipped to design and produce reliable transformers from 35 kVA to 500kVA, serving global clients in utilities, industries, and infrastructure. Our commitment is to deliver products that ensure safety, efficiency, and long-term performance.
Key Features of GNEE 35~500kVA Oil-immersed Transformers
Our transformer series is engineered for durability and performance.
Here's what sets our 35 kVA Oil-immersed Transformer and larger models apart:
- Wide Capacity Range: We cover from compact 35 kVA units to robust 500kVA transformers for diverse application needs.
- High Efficiency & Low Losses: Utilizing high-grade silicon steel cores and precision winding to minimize no-load and load losses, reducing operational costs.
- Robust Construction: Welded steel tanks with anti-corrosion treatment, high-quality insulating oil, and durable components ensure longevity.
- Excellent Cooling: The oil-immersed design (ONAN cooling) provides effective heat dissipation for stable operation.
- Comprehensive Safety: Built-in features like pressure relief devices, standard bushings, and reliable insulation systems.
- Customization Ready: Voltage ratings (e.g., 11kV/415V, 33kV/11kV), tap changers, and special coatings can be tailored to your project.
Technical Specifications & Performance Data
Transparency is key. Below are typical parameters for our Oil-immersed Power Transformer series. Check our detailed 35 kVA transformer specs and full range data sheet for exact values.
Standard Performance Parameters Table
| Capacity Range | Typical No-load Loss | Typical Load Loss (75°C) | Impedance Voltage |
|---|---|---|---|
| 35 kVA - 100 kVA | 150W - 300W | 1100W - 2000W | ~4% |
| 150 kVA - 315 kVA | 400W - 700W | 2500W - 5000W | ~4% |
| 400 kVA - 500 kVA | 800W - 1000W | 6000W - 8000W | ~4-5% |
Note: All designs comply with IEC, IEEE, or other international standards. Loss values are indicative for standard designs.
Applications of 35~500kVA Oil-immersed Transformers
Where can you use our transformers? This versatile range is ideal for:
- Commercial & Residential Power Distribution: Supplying shopping malls, apartment complexes, and hospitals.
- Industrial Manufacturing: Powering factories, plants, and heavy machinery.
- Renewable Energy Farms: Step-up or interconnection for solar and wind power projects.
- Infrastructure Projects: Used in water treatment plants, railways, and airports.
- Utility Substations: Reliable units for local grid distribution.
Final testing of a 35 kVA Oil-immersed Transformer in GNEE's quality control lab
GNEE Manufacturing Process & Quality Assurance
Quality isn't an option; it's our standard.
Every Oil-immersed Power Transformer undergoes a strict process:
- Design & Engineering: Customized design based on your requirements and international standards.
- Core & Coil Production: Precision cutting and stacking of core laminations; automated winding of coils.
- Assembly & Drying: Careful assembly followed by vacuum drying to remove moisture.
- Oil Filling & Sealing: Filling with high-grade, tested insulating oil and hermetic sealing.
- Rigorous Testing: Each unit undergoes routine tests including ratio, resistance, loss measurement, and dielectric withstand tests.
GNEE warehouse stock of various capacity Oil-immersed Transformers ready for shipment.
Why Source Your Transformer from GNEE Factory?
Choosing GNEE means securing more than just a product; it's a partnership for reliable power.
- Cost-Effective: Eliminate middleman margins with direct factory pricing.
- Technical Expertise: Our engineering team provides support from specification to installation.
- Quality Certifications: We adhere to international standards and support third-party inspection (e.g., SGS, BV).
- Reliable Logistics: Expertise in export packaging and documentation for smooth global delivery.
- After-Sales Support: We are here to assist with technical inquiries throughout the transformer's lifecycle.
Professional packaging and loading of an Oil-immersed Transformer into a shipping container for export.
Conclusion: Partner with GNEE for Your 35~500kVA Oil-immersed Power Transformer Needs
For a balance of reliability, efficiency, and value in power distribution, the right Oil-immersed Power Transformer is crucial. GNEE, as your direct manufacturer, provides robust solutions from 35 kVA to 500kVA, tailored to meet your specific project demands and performance expectations.
Ready to power your project?
Contact us now for the latest price list and a detailed quotation for your required 35~500kVA Oil-immersed Power Transformer. Let's discuss how our transformers can deliver safety and efficiency to your operation.