Product Overview
The S20 oil-immersed power transformer is a new generation of high-efficiency and energy-saving power transformer, adopting the most advanced design concepts and manufacturing processes, featuring lower loss, higher efficiency, and longer service life. This transformer is suitable for power systems to convert high-voltage electricity to low-voltage electricity, providing stable and reliable power supply for various users.
Technical Parameters
| Rated Capacity | 50kVA – 5000kVA |
| High-voltage Side Voltage | 6kV, 10kV, 35kV |
| Low-voltage Side Voltage | 0.4kV, 10kV |
| Connection Group | Yyn0, Dyn11, Yd11 |
| Cooling Method | ONAN (Oil-immersed Natural Cooling), ONAF (Oil-immersed Forced Air Cooling) |
| Insulation Class | Class A |
| Short-circuit Impedance | 4% – 6% |
Structural Features
- Core Structure: Uses high-quality high-permeability cold-rolled silicon steel sheets with full miter joint structure to reduce no-load loss and noise.
- Winding Structure: Wound with copper foil or copper wire, high-voltage windings adopt multi-layer cylindrical structure, while low-voltage windings adopt foil 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 and vacuum drying process to ensure safe operation of the transformer.
- Protection Devices: Equipped with pressure relief valve, oil level gauge, thermometer, gas relay and other protection devices to ensure safe and reliable operation of the transformer.
Performance Advantages
- Ultra-high Efficiency and Energy Saving: No-load loss is about 40% lower than S11 type, and load loss is about 30% lower, meeting national first-level energy efficiency standards.
- Reliable Operation: Uses high-quality materials and advanced processes to ensure long-term stable operation of the transformer.
- Extremely Low Noise: Through optimized core structure and winding design, operating noise is 10-15dB lower than traditional transformers.
- Easy Maintenance: Reasonable structure, simple inspection and maintenance.
- Long Service Life: Under normal operating conditions, the service life can reach more than 30 years.
- Good Environmental Performance: Uses environmentally friendly transformer oil, which is friendly to the environment.
Application Scenarios
- Urban distribution network
- Rural power grid transformation
- Industrial enterprise distribution system
- Commercial building distribution system
- Large residential community distribution system
- Power station supporting
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 and oil chromatography analysis 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.
- Regular Testing: Regularly conduct耐压 test and short-circuit test to ensure stable transformer performance.
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.
- Regularly check protection devices to ensure their normal operation.
