Product Details:
Type: Oil-Immersed Distribution Transformer
Rated Power: Up to 5,000 kVA
Primary Voltage: Up to 35 kV
Model: S11-500 KVA 11/0.4 kV Transformer (Manufacturing of Oil Tank)
The transformer oil tank is the outer casing of the transformer, filled with transformer oil, which has a great role in both insulation and dissipating heat. The oil increases electrical insulation between internal parts and absorbs the generated heat during operation, which is then released to the atmosphere through the walls of the tank.
Technical Specifications
**500 kVA Transformer Specifications and Data Sheet**
| Model | S11-500 kVA-11/0.4KV |
| Type | Oil Immersed Distribution Transformer |
| Standard | IEC60076 |
| Rated Power | 500 kVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | Oil cooled |
| Primary Voltage | 11 kV |
| Secondary Voltage | 0.4 kV |
| Winding Material | Copper |
| Vector Group | Dny11 |
| Impedance | 4% |
| Tap Changer | NLTC |
| Tapping Range | ±2*2.5% |
| No Load Loss | 0.68KW |
| Load Loss | 5.15KW |
| Accessories | Standard Configuration |
Pre-Shipment Inspection:
Visual Inspection
Check the flatness of the tank surface, and observe any dents, deformation, or welding defect. Check that the protective paint applied is even, without peeling, for good appearance and corrosion resistance.
Electrical Performance Testing
Conduct a ratio test by using a ratio bridge in order to measure the voltage ratio of the transformer. The ratio needs to fall within the margin of permissive error; otherwise, voltage output will be affected and might impact system functionality.
Oil Quality Assessment
Check the oil for contamination and water. Admixtures like water reduce the insulation capability of the oil, while contaminants can block passages. Oil cleanliness is vital for the good performance of a transformer.
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