The PINEELE 4000kVA 63-20kV Power Transformer is a high-capacity, oil-immersed power transformer engineered for reliable performance in utility-grade and industrial power distribution networks. Built to meet IEC 60076 standards, this transformer features high-quality core and winding materials, optimized cooling systems, and excellent insulation performance—making it ideal for long-term, maintenance-free service.
With internationally recognized certifications including KEMA, ISO9001, CE, and other global standards, this power transformer ensures operational safety, efficiency, and durability in challenging grid environments. Designed for indoor or outdoor use, it suits substations, power stations, infrastructure, and renewable energy integration.
Product Features
- Rated Capacity: 4000kVA (4MVA)
- Voltage Rating: High Voltage 63kV, Low Voltage 20kV
- Vector Group: Dyn11 / Yyn0
- Cooling Method: ONAN / ONAF (Oil Natural Air Natural / Oil Natural Air Forced)
- Frequency: Power frequency, 50Hz
- Insulation Class: A-Class
- Core Type: U-shaped, made with cold-rolled silicon steel
- Winding Material: High-purity copper or aluminum available
- Impedance Voltage: 8%
- Temperature Rise: 60K / 65K
- Oil Type: Mineral oil, per IEC 60296
- AC and Lightning Impulse Withstand Voltage: As per IEC standards
- Certificates: KEMA, ISO9001, ISO14001, CE, OHSAS18001
- High-Strength Core Construction
Cold-rolled silicon steel with hydraulic compaction reduces core noise and improves stability.
- Short-Circuit Resistant Design
The transformer is modeled under the worst-case short circuit conditions to prevent damage under fault conditions.
- Advanced Electric Field Simulation
Electric stress field calculations are performed to verify insulation strength across the entire structure.
- High-Frequency Welding & Compaction
Coil and winding fabrication use advanced welding and hydraulic compaction techniques to enhance mechanical strength.
- Leak-Proof Structure
All seals use high-quality rubber gaskets embedded in grooves for extended oil containment and no-leak performance.
- 3D CAD Engineering
Full engineering documentation is prepared using 3D modeling tools to ensure dimensional accuracy and technical clarity.
Quality Assurance from PINEELE
- Global Standard Certifications: KEMA, ISO9001, CE, OHSAS18001
- Materials Traceability: All raw materials are strictly sourced from approved global and domestic suppliers.
- Process Control: A comprehensive Quality Control Verification Card is used throughout the production lifecycle.
- Skilled Workforce: All technicians undergo professional training to maintain high consistency and performance standards.
- Testing: Each unit undergoes full factory routine tests, type tests, and optional special tests as per customer needs.
- Utility Substations
- Industrial Power Stations
- Railway Electrification Systems
- Renewable Energy Integration (Solar, Wind)
- Hydropower Plants
- Gas and Thermal Power Projects
- Urban Grid Expansion Projects
- AC Traction Substations
Reference Projects
- 88kV AC traction transformer project in South Africa
- 230kV power station transformer for a gas plant in Myanmar
- 110kV hydroelectric substation transformer in Vietnam
- Various customized solutions for global clients in energy and infrastructure sectors
| Parameter | Specification |
|---|
| Model No. | PEO-S-4000/63/20 |
| Type | Power Transformer |
| Rated Capacity | 4000kVA (4MVA) |
| Rated High Voltage | 63kV |
| Rated Low Voltage | 20kV |
| Vector Group | Dyn11 / Yyn0 |
| Impedance Voltage | 8% |
| Cooling Method | ONAN / ONAF |
| Frequency | 50Hz |
| Core Type | U-type, core-type transformer |
| Winding | Two-winding type |
| Winding Material | Copper / Aluminum |
| Insulation Oil | Mineral oil (IEC 60296 compliant) |
| Insulation Class | A-class |
| Temperature Rise | 60/65K |
| Reference Standards | IEC 60076 |
| Packaging | Wooden pallet or wooden case |
| Certificate Compliance | ISO9001, ISO14001, KEMA, CE |
| Transformer Type | Description |
|---|
| 110kV 2-Winding Transformer (De-energized Tap-changer) | Designed per IEC, customized details on request |
| 110kV 2-Winding Transformer (On-load Tap-changer) | For heavy load applications |
| 110kV 3-Winding Transformer (On-load Tap-changer) | Suitable for dual-feed power systems |
| 220kV 2-Winding Transformer | For primary transmission networks |
| 220kV 3-Winding Transformer | Supports integration with multiple sub-transmission systems |
PINEELE’s 4000kVA Power Transformers deliver high-efficiency and rugged reliability for today’s power distribution networks. Whether your project requires strong insulation, low loss, or grid-level fault tolerance, our transformers are ready to meet the challenge—with full compliance to IEC standards and the backing of international certifications.
Need a quote or technical drawing? Contact our engineering team and receive a response within 24 hours.
