Product Overview
The S11 oil-immersed distribution transformer is a high-efficiency and energy-saving power transformer mainly used in distribution systems to convert high-voltage electricity to low-voltage electricity, providing stable power supply for users. This transformer adopts advanced design concepts and manufacturing processes, featuring low loss, low noise, and reliable operation.
Technical Parameters
| Rated Capacity | 30kVA – 2500kVA |
| High-voltage Side Voltage | 6kV, 10kV, 35kV |
| Low-voltage Side Voltage | 0.4kV |
| Connection Group | Yyn0, Dyn11 |
| Cooling Method | ONAN (Oil-immersed Natural Cooling) |
| Insulation Class | Class A |
| Short-circuit Impedance | 4% – 6% |
Structural Features
- Core Structure: Uses high-quality cold-rolled silicon steel sheets with multi-step lap joints to reduce no-load loss and noise.
- Winding Structure: High-voltage windings adopt multi-layer cylindrical structure, while low-voltage windings adopt foil or layer structure, improving mechanical strength and short-circuit resistance.
- Oil Tank Design: Uses corrugated oil tank or expansion oil tank, with good heat dissipation performance and sealing performance.
- Insulation System: Uses high-quality insulation materials to ensure safe operation of the transformer.
- Protection Devices: Equipped with pressure relief valve, oil level gauge, thermometer and other protection devices to ensure safe and reliable operation of the transformer.
Performance Advantages
- High Efficiency and Energy Saving: No-load loss is about 30% lower than S9 type, and load loss is about 20% lower, meeting national energy-saving standards.
- Reliable Operation: Uses high-quality materials and advanced processes to ensure long-term stable operation of the transformer.
- Low Noise: Reduces operating noise through optimized core structure and winding design.
- Easy Maintenance: Reasonable structure, simple inspection and maintenance.
- Long Service Life: Under normal operating conditions, the service life can reach more than 20 years.
Application Scenarios
- Urban distribution network
- Rural power grid transformation
- Industrial enterprise distribution system
- Commercial building distribution system
- Residential community distribution system
Maintenance
- Regular Inspection: Regularly check parameters such as oil level, oil color, and oil temperature to ensure normal operation of the transformer.
- Insulation Testing: Regularly conduct insulation resistance testing to ensure good insulation performance.
- Cooling System Maintenance: Keep the cooling system clean to ensure good heat dissipation.
- Seal Inspection: Regularly check seals to prevent oil leakage.
- Regular Oil Filling: Timely supplement transformer oil according to oil level conditions.
Safety Precautions
- The transformer should be installed in a well-ventilated, dry place without corrosive gases.
- Avoid overload operation when the transformer is running.
- Regularly check the grounding device to ensure good grounding.
- Strictly follow operating procedures when operating the transformer.
- When abnormal conditions occur in the transformer, immediately stop operation and conduct maintenance.
