1000 kVA 11 kV/0.4 kV Oil-Immersed Distribution Transformer
Three-phase ONAN distribution transformer for utility, industrial and renewable energy projects. Available with copper or aluminum windings and project-specific voltage configurations.
1000 kVA Transformer Technical Data
Standard configuration for an 10 kV/0.4 kV oil-immersed distribution transformer. Final specifications can be adjusted according to project requirements.
| Parameter | Standard Configuration |
|---|---|
| Product Type | Oil-Immersed Distribution Transformer |
| Rated Capacity | 1000 kVA |
| Primary Voltage | 10 kV |
| Secondary Voltage | 0.4 kV / 0.415 kV |
| Phase | Three Phase |
| Frequency | 50 Hz |
| Cooling Method | ONAN |
| Vector Group | Dyn11 / Yyn0 |
| Winding Material | Copper / Aluminum |
| Tapping Range | ±2 × 2.5% |
| Tap Changer | Off-Circuit Tap Changer |
| Tank Type | Hermetically Sealed / Conservator |
| Installation | Outdoor / Indoor |
| Applicable Standard | IEC / Project-Specified Standard |
Project-Specific Technical Configuration
Voltage ratio, impedance, loss level, tapping range, winding material, accessories and testing requirements can be configured according to the approved project specification.
Performance values, dimensions and total weight are subject to final design confirmation and the approved technical drawing.
Product Features
Low-Loss Core Design
High-quality silicon steel core for reduced no-load loss and improved efficiency.
Reliable ONAN Cooling
Optimized radiator design ensures efficient heat dissipation and stable operation.
Sealed Outdoor Construction
Hermetically sealed or conservator tank for reliable performance in harsh environments.
Project-Specific Configuration
Voltage, tapping range, accessories and enclosure options tailored to project requirements.
Routine Testing and Technical Documentation
Each transformer is inspected and tested before delivery. Technical documents can be prepared according to the approved project specification and order requirements.
![Oil-immersed transformer routine testing at Yingben factory](https://yingbenps.com/wp-content/uploads/2026/08/d80f9fc0d6c094666084bdbed7025606.webp")
Routine Testing
Main inspections and electrical tests carried out before shipment.
Available Technical Documents
Documents can be submitted for technical review and project approval.
Project Documentation
Final testing items, acceptance criteria and document format are confirmed according to the approved technical specification and purchase order.
1000kVA Distribution Transformer Finished Product
