250kVA Liquid-Immersed Transformer: Technical Parameters and Performance Comparison with Other Capacities
Feb 03, 2026
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In medium-voltage power distribution systems, choosing the right transformer capacity directly affects efficiency, safety, and long-term operating costs. The 250kVA Liquid-Immersed Transformer is widely used in industrial plants, commercial facilities, and utility distribution networks due to its balanced performance and cost efficiency.
As a professional transformer manufacturer, GNEE provides factory-direct 250kVA Liquid-Immersed Transformer solutions, designed and produced in strict accordance with IEC and international standards.
In this article, we will clearly explain the technical parameters of the 250kVA Liquid-Immersed Transformer, and compare its performance with other common capacities to help you make an informed decision.
Who We Are – Manufacturer of 250kVA Liquid-Immersed Transformer
GNEE is a professional power equipment manufacturer with years of experience in the design, production, and global supply of oil-filled and liquid-immersed transformers. We operate modern workshops, automated production lines, and strict quality inspection systems to ensure every 250kVA Liquid-Immersed Transformer delivers stable performance, high efficiency, and long service life.
Our transformers are widely exported to Europe, Southeast Asia, the Middle East, Africa, and South America, supporting industrial, commercial, and infrastructure projects worldwide.
Transformer manufacturing workshop
250kVA Liquid-Immersed Transformer Technical Parameters Overview
The 250kVA Liquid-Immersed Transformer technical parameters are designed to meet medium-load power distribution requirements while maintaining excellent thermal performance and insulation reliability. Liquid (oil) immersion ensures effective cooling and long-term operational stability even under continuous load.
Typical Technical Parameters of 250kVA Liquid-Immersed Transformer
| Parameter | Specification |
|---|---|
| Rated Capacity | 250 kVA |
| Rated Voltage (HV) | 6kV / 10kV / 11kV / 20kV / 33kV |
| Rated Voltage (LV) | 400V / 415V / Customized |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Class | Class A |
| Vector Group | Dyn11 / Yyn0 / Customized |
| Impedance | 4% – 6% |
| Standard | IEC / EN / ANSI (optional) |
| Installation | Outdoor / Indoor |
Product detail image – oil conservator, radiators, bushings, and nameplate close-up
250kVA Liquid-Immersed Transformer Performance Characteristics
he 250kVA Liquid-Immersed Transformer performance is optimized for stable voltage output, low losses, and high overload tolerance. Compared with dry-type transformers of similar capacity, liquid immersion offers superior heat dissipation and longer service life.
Key performance advantages include:
- Low no-load and load losses for energy savings
- Strong short-circuit withstand capability
- Excellent insulation stability under high humidity or dusty environments
- Reduced maintenance frequency due to sealed oil system
These characteristics make the 250kVA Liquid-Immersed Transformer ideal for factories, commercial buildings, mining sites, and utility substations.
Performance Comparison: 250kVA Liquid-Immersed Transformer vs Other Capacities
When selecting a transformer, understanding capacity comparison is critical. Below is a performance comparison between the 250kVA Liquid-Immersed Transformer and other common ratings.
250kVA vs 200kVA Liquid-Immersed Transformer
A 200kVA unit is suitable for lighter loads, while the 250kVA Liquid-Immersed Transformer offers higher load margin and better expansion flexibility. For users planning future capacity growth, 250kVA provides a safer operating buffer.
250kVA vs 315kVA Liquid-Immersed Transformer
Compared to 315kVA models, the 250kVA Liquid-Immersed Transformer has lower initial cost and reduced no-load losses. It is more cost-effective when actual demand does not justify higher capacity.
250kVA vs 400kVA Liquid-Immersed Transformer
A 400kVA transformer suits heavy industrial loads, but for medium-scale facilities, the 250kVA Liquid-Immersed Transformer delivers optimal efficiency without unnecessary capital investment or idle capacity losses.
Typical Applications of 250kVA Liquid-Immersed Transformer
The 250kVA Liquid-Immersed Transformer is widely used in:
- Manufacturing plants and workshops
- Commercial complexes and shopping centers
- Residential distribution substations
- Agricultural and rural electrification projects
- Infrastructure and utility power networks
Its balanced capacity makes it one of the most popular choices for medium-load power distribution systems.
Why Choose GNEE 250kVA Liquid-Immersed Transformer
Choosing GNEE means choosing reliability, customization, and factory-direct pricing. Every 250kVA Liquid-Immersed Transformer can be customized for voltage level, vector group, enclosure design, and local grid standards.
Our advantages include:
- Direct manufacturer supply with competitive pricing
- Strict quality control and factory testing
- Fast delivery and flexible customization
- Professional technical support before and after sales
Conclusion: Choose the Right 250kVA Liquid-Immersed Transformer for Your Project
The 250kVA Liquid-Immersed Transformer offers an ideal balance between performance, efficiency, and investment cost, making it a smart choice for a wide range of power distribution applications. With proven technical parameters and clear advantages over smaller or oversized capacities, it remains a reliable solution for long-term operation.
👉 Contact GNEE today to get a competitive quote, technical drawings, and customized solutions for your 250kVA Liquid-Immersed Transformer project. Let our factory help you power your system safely and efficiently.