250kVA Oil-Immersed Transformer: Energy Efficiency and Environmental Protection Features
Feb 03, 2026
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As GNEE, we are a specialized manufacturer and global supplier dedicated to engineering reliable and innovative electrical solutions. With extensive expertise in the field, we produce high-performance transformers that meet rigorous international standards.
Our commitment is to provide customers with durable, efficient, and sustainable power equipment, such as our advanced 250kVA oil-immersed transformer, designed to deliver superior operational and environmental performance.
Transformer production workshop
High Energy Efficiency: Core Design for Reduced Operational Costs
The primary economic benefit of our transformer lies in its high energy efficiency, which directly translates to lower electricity losses and significant cost savings over its lifespan.
- Advanced Core Material: We utilize high-grade, low-loss silicon steel or amorphous alloy cores to drastically minimize no-load (core) losses.
- Precision Windings: Optimized copper or aluminum winding designs reduce load losses, ensuring peak efficiency even under partial loads.
- Optimized Performance: This focus on cutting-edge materials and design ensures our energy-efficient distribution transformer operates with minimal wasted energy, offering a rapid return on investment.
Environmental Protection Features: Sustainable and Responsible Design
Modern transformer technology must align with ecological goals. Our products incorporate key features that mitigate environmental impact.
- Biodegradable Fluid Option: Available with high-fire-point, biodegradable ester oil. This fluid is non-toxic, reduces contamination risk, and offers excellent thermal and insulating properties.
- Extended Lifecycle: Robust construction and superior materials extend service life, reducing resource consumption and waste generation from frequent replacements.
- Reduced Emissions: Higher efficiency means less power demand from generation plants, indirectly lowering greenhouse gas emissions associated with electricity production.
Key Technical Parameters and Specifications
The following table outlines the standard specifications for our high-performance 250kVA oil-immersed transformer, highlighting its robust design.
| Parameter | Specification |
|---|---|
| Rated Capacity | 250 kVA |
| Phase | Three-Phase |
| Frequency | 50/60 Hz |
| High Voltage (HV) | 11, 22, 33 kV (or as required) |
| Low Voltage (LV) | 0.4 kV |
| Voltage Tapping | ±5% or ±2x2.5% on HV side |
| Insulation Level | LI 75 AC 35 / LI 0 AC 3 (Typical) |
| Winding Material | Copper (Standard) / Aluminum (Optional) |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Temperature Rise | ≤55K (Winding), ≤50K (Oil) |
| No-load Loss (P0) | As per customer efficiency requirement (e.g., ≤340W) |
| Load Loss (Pk) | As per customer efficiency requirement (e.g., ≤2850W) |
| Noise Level | ≤55 dB(A) (or lower upon request) |
| Protection Degree | IP55 (Outdoor) |
| Oil Type | Mineral Oil (Standard) / Biodegradable Ester Oil (Optional) |
Reliable Application and Safety Features
Our transformers are built for reliability in diverse settings.
- Robust Construction: Sealed tank with corrosion-resistant finish prevents leaks and protects internal components.
- Complete Accessories: Equipped with conservator tank, breather, pressure relief device, and temperature indicators for safe, monitored operation.
- Wide Applications: Ideal for utility distribution, commercial complexes, industrial plants, and renewable energy projects requiring a dependable power distribution transformer.
Conclusion and Call to Action
In conclusion, the modern 250kVA oil-immersed transformer from GNEE represents the optimal balance of energy efficiency, operational reliability, and environmental protection. It is a smart, sustainable choice for future-proofing your power infrastructure.
Ready to specify a transformer that saves costs and protects the planet?