Chinese Customers Visit GNEE To Discuss Customization Of 500 KVA Oil-Immersed Transformers
Mar 10, 2026
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Recently, GNEE Electric welcomed a delegation of Chinese customers to its manufacturing base for an in-depth visit and technical discussion focused on the customization of 500 kVA oil-immersed transformers. The visit covered factory inspection, technical exchanges, and business negotiations, ultimately leading to a successful cooperation agreement.
As a professional transformer manufacturer and exporter, GNEE Electric continues to strengthen its reputation by providing high-quality, customized power distribution solutions tailored to specific project requirements.
Factory Tour: Witnessing GNEE's Manufacturing Strength
During the visit, the customers were guided through GNEE's modern transformer production workshop, where they observed the full manufacturing process of oil-immersed transformers.
The tour included:
- Core cutting and stacking workshop (CRGO silicon steel processing)
- Winding workshop with precision automatic winding machines
- Assembly line for core and coil integration
- Vacuum oil filling and drying equipment
- Final testing laboratory with complete inspection systems
The customers showed great interest in GNEE's advanced equipment and strict quality control procedures, especially the vacuum drying process, which ensures excellent insulation performance and long service life.
Transformer production workshop
Office Meeting: In-Depth Technical Discussion on 500 kVA Transformer Customization
Following the factory tour, both parties held a detailed technical meeting at GNEE's office to discuss the project requirements for 500 kVA oil-immersed transformers.
The client shared that the transformers would be used in a manufacturing facility with unstable grid voltage and high ambient temperatures, which required enhanced reliability and voltage stability.
Customized Technical Solution Provided by GNEE
Based on the project conditions, GNEE proposed the following customized specifications:
| Parameter | Customized Specification |
|---|---|
| Rated Capacity | 500 kVA |
| Phase | Three Phase |
| Primary Voltage | 10kV |
| Secondary Voltage | 0.4kV / 415V |
| Frequency | 50Hz |
| Cooling Method | ONAN |
| Vector Group | Dyn11 |
| Tap Changer | ±2×2.5% (Off-circuit) |
| No-load Loss | ≤ 780 W |
| Load Loss | ≤ 5200 W |
| Impedance Voltage | 4% – 6% |
| Insulation Level | LI75 AC35 |
| Winding Material | Copper |
| Temperature Rise | ≤ 65K |
Solving Key Customer Challenges with Customized Design
During the discussion, GNEE engineers addressed several critical challenges faced by the customer:
1. Voltage Fluctuation
The local power grid experienced frequent voltage instability.
Solution: Equipped with a tap changer to adjust voltage and ensure stable output.
2. High Ambient Temperature
The installation site had high operating temperatures.
Solution: Optimized cooling design and high-quality insulating oil to improve heat dissipation.
3. Continuous Operation Demand
The facility required 24/7 operation.
Solution: Low-loss core design and copper windings to reduce energy consumption and heat generation.
4. Long-Term Reliability
The client needed durable equipment with minimal maintenance.
Solution: Enhanced insulation system and vacuum oil treatment to extend service life.
These tailored solutions demonstrated GNEE's strong engineering capabilities and deep understanding of real-world industrial applications.
Cooperation Agreement Successfully Reached
After detailed technical confirmation and commercial discussions, both parties reached a cooperation agreement for the customized 500 kVA oil-immersed transformers.
The agreement includes:
- Customized production based on approved technical drawings
- Strict quality inspection before shipment
- Professional export packaging
- On-time delivery to the customer's project site
The customers expressed high satisfaction with GNEE's:
- Manufacturing capabilities
- Technical expertise
- Professional service
- Fast response and customization ability
Group photo of customers and GNEE team after signing cooperation agreement.
Conclusion: Strengthening Global Partnerships Through Custom Transformer Solutions
This successful visit highlights GNEE Electric's commitment to providing high-quality and customized transformer solutions for global clients. From factory tours to technical discussions and final cooperation, every step reflects GNEE's professionalism and customer-oriented approach.
By delivering reliable and energy-efficient 500 kVA oil-immersed transformers, GNEE helps customers solve real operational challenges and improve power system stability.
If you are looking for a trusted transformer manufacturer for your next project, contact GNEE today to get customized solutions, expert technical support, and a competitive quotation.
