GNEE 500kVA Oil-immersed Transformers Successfully Shipped To Mumbai
Feb 04, 2026
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Recently, GNEE successfully completed the production, testing and shipment of a batch of 500kVA oil-immersed transformers, with the equipment formally dispatched to Mumbai, India. These transformers will serve local power infrastructure and industrial electricity projects, providing reliable support for the stable operation of the regional power system.
The successful delivery of these 500kVA oil-immersed transformers represents another significant achievement in GNEE's ongoing expansion of transformer operations within the Indian market and deepening of international collaborations. It also fully demonstrates the company's comprehensive capabilities in the manufacturing, quality control, and international project delivery of medium-to-large capacity oil-immersed transformers.
500kVA oil-immersed transformers loaded for dispatch
Focusing on Project Requirements: Customised Design Solutions for 500kVA Oil-Immersed Transformers
India's power system operates under complex environmental conditions, demanding heightened reliability, stability, and sustained continuous operation from transformer equipment. Addressing Mumbai's characteristics of substantial industrial loads and elevated ambient temperatures, GNEE implemented targeted optimisations to the 500kVA oil-immersed transformer's structural design, cooling system, and insulation configuration for this project.
The delivered 500kVA oil-immersed transformer possesses the following significant technical advantages:
- Oil-immersed structural design delivers superior heat dissipation, suitable for sustained full-load or high-load operation
- Premium silicon steel laminations and high-purity copper windings effectively reduce no-load and load losses
- Stable and reliable insulation system with excellent thermal resistance and ageing resistance
- Robust overall structure suitable for industrial environments and outdoor installation conditions
Through scientific design and rigorous manufacturing, this transformer model maintains stable operation under complex conditions, meeting customer requirements for power system safety and continuity.
Strict adherence to production processes ensures quality control for every unit
During project execution, GNEE advanced strictly according to the established production schedule. From raw material procurement onwards, critical components underwent rigorous selection and inspection. Critical processes including core stacking, winding fabrication, final assembly, and oil filling were executed by an experienced technical team under continuous quality oversight.
Final testing of the 500kVA oil-immersed transformer
Prior to dispatch, all 500kVA oil-immersed transformers underwent routine testing and factory inspections. These encompassed electrical performance assessments, insulation testing, and structural/visual examinations to verify compliance with design specifications and relevant standards.
Professional export packaging and logistics solutions guarantee long-distance transport safety
Tailored to the shipping conditions and maritime transit cycles for India, GNEE devised specialised export packaging and logistics plans for this batch of 500kVA oil-immersed transformers. During packaging, critical transformer components underwent reinforcement, anti-vibration, and moisture-proofing treatments to minimise transport risks.
During containerisation and dispatch, GNEE strictly adhered to export regulations, ensuring the equipment remained in optimal condition throughout the extended sea voyage and multiple handling operations. The transformers arrived safely at the customer's site in Mumbai, laying a solid foundation for subsequent installation and commissioning work.
Deepening Engagement in the Indian Market, Sustaining Overseas Power Projects
India stands as one of the world's fastest-growing electricity demand markets and a key overseas focus for GNEE. In recent years, GNEE's oil-immersed and dry-type transformers have been successfully deployed across multiple Indian industrial, power, and infrastructure projects, spanning diverse capacity levels and application scenarios.
Through consistent delivery of stable, reliable products and professional technical support, GNEE has progressively established a robust foundation for collaboration and earned strong customer reputation within the local market. The recent shipment of a 500kVA oil-immersed transformer to Mumbai further solidifies GNEE's operational foundation in the Indian market while creating additional opportunities for future collaboration.
About GNEE
Established in 2008, GNEE is an integrated supplier of industrial equipment and materials specialising in research, development, production, and export. The company possesses a comprehensive production system, mature quality management processes, and extensive experience in international projects. The company offers oil-immersed and dry-type transformers in various specifications, alongside OEM/ODM customisation services. Its products are exported to numerous countries and regions including the Middle East, South Asia, Southeast Asia, Africa, and South America.
Moving forward, GNEE remains committed to prioritising product quality and customer needs, continuously enhancing technical capabilities and service provision to deliver more efficient and reliable equipment solutions for global power and industrial projects.
GNEE 500kVA Oil-Immersed Transformer Technical Specifications
| Item | Specification |
|---|---|
| Product Model | GNEE 500kVA Oil-Immersed Distribution Transformer |
| Rated Capacity | 500 kVA |
| Phase | Three Phase |
| Rated Frequency | 50 Hz / 60 Hz |
| Rated High Voltage | 6 kV / 10 kV / 11 kV / 20 kV / 33 kV (Customizable) |
| Rated Low Voltage | 0.4 kV / 0.415 kV (Customizable) |
| High Voltage Current | According to voltage level |
| Low Voltage Current | Approx. 721 A (at 0.4 kV) |
| Vector Group | Dyn11 / Yyn0 (Optional) |
| Tap Changer | Off-circuit tap changer (±5% or ±2 × 2.5%) |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Class | Class A (Oil-Immersed) |
| Insulating Oil | Mineral insulating oil / Eco-friendly insulating oil (Optional) |
| Temperature Rise Limit | Top oil ≤ 60K; Winding ≤ 65K |
| No-load Loss | ≤ 680 W (Typical value, customizable) |
| Load Loss | ≤ 5,150 W (Typical value, customizable) |
| No-load Current | ≤ 1.2% |
| Short-circuit Impedance | 4% – 6% |
| Noise Level | ≤ 55 dB |
| Degree of Protection | IP00 / IP20 (Optional) |
| Installation Type | Indoor / Outdoor |
| Applicable Standards | IEC 60076 / GB / ANSI |
| Certifications | ISO / CE / IEC Test Reports |