Kazakhstan
Oil-Immersed Transformer for Regional Power Distribution
Country: Kazakhstan

Industry: Power Distribution
Main Product: Oil-Immersed Transformer
Application: Regional Distribution Network
Voltage: 10kV / 0.4kV
Frequency: 50Hz
1.Project Overview
Explore LBAJI’s oil-immersed transformer solution for regional power distribution in Kazakhstan, including manufacturing, testing, export shipment and site commissioning.
The project was designed for a regional power distribution application in Kazakhstan, where reliable medium-voltage transformation was required for industrial and commercial loads.
The transformer solution was designed for a 10kV/0.4kV distribution environment and outdoor installation.
2. Project Challenge
The application required equipment capable of handling:
- Seasonal temperature variations
- Outdoor installation
- Continuous electrical loads
- Long-distance transportation
- Reliable operation with limited maintenance
3. LBAJI Solution
LBAJI proposed an oil-immersed transformer featuring:
- High-quality silicon steel core
- Optimized winding structure
- Robust transformer tank
- Efficient oil cooling
- Temperature monitoring
- Pressure relief protection
- Outdoor installation design
4. Technical Specifications
| Parameter | Specification |
| Country | Kazakhstan |
| Project Type | Regional Power Distribution |
| Product | Oil-Immersed Transformer |
| Model | S11 / S13 Series* |
| Rated Capacity | 630–1600 kVA* |
| Rated Primary Voltage | 10 kV |
| Rated Secondary Voltage | 0.4 kV |
| Frequency | 50 Hz |
| Phase | Three Phase |
| Cooling Method | ONAN |
| Insulation Medium | Mineral Insulating Oil |
| Tap Range | ±2×2.5% / ±5%* |
| Vector Group | Dyn11* |
| Installation | Outdoor |
| Ambient Condition | Outdoor / Continental Climate |
| Standards | IEC 60076 |
| Application | Regional Power Distribution |
- Primary Voltage: 10kV
- Secondary Voltage: 0.4kV
- Frequency: 50Hz
- Capacity: 630–1600kVA
- Cooling: ONAN
- Installation: Outdoor

5. Manufacturing & Testing
The transformer goes through:
Core Manufacturing → Winding → Assembly → Vacuum/Oil Treatment → Testing → Final Inspection

6.Packing & Shipment

The equipment is protected with export-grade packing designed for:
- Moisture protection
- Mechanical protection
- Long-distance transportation
- Container loading
7. Installation
At the project site:
Arrival → Inspection → Crane Lifting → Foundation Installation → Cable Connection → Grounding → Testing → Energization

8. Customer Benefits
- Reliable power distribution
- Strong outdoor performance
- Easy maintenance
- Stable voltage transformation
- Long-term operational reliability
