The performance and lifespan of dry-type transformers are significantly influenced by their operating environment. The following environmental factors must be considered:
1. Ambient Temperature
Standard Operating Range : -25°C to +40°C (may vary by model).
High-Temperature Impact : Prolonged exposure to high temperatures accelerates insulation aging, reducing transformer lifespan.
Low-Temperature Impact : Extreme cold may cause material brittleness, affecting mechanical strength.
2. Humidity Requirements
Relative Humidity : Typically ≤90% (non-condensing).
High-Humidity Impact : May degrade insulation performance, leading to short circuits or partial discharges.
3. Altitude Considerations
Standard Altitude : ≤1000 meters (derating required above this level).
High-Altitude Impact : Thinner air reduces cooling efficiency, necessitating capacity reduction or special design adaptations.
4. Pollution Level
Clean Environments : Suitable for areas free from conductive dust and corrosive gases.
Polluted Environments : If dust or chemical contaminants are present, transformers with higher protection ratings (e.g., IP20 or above) are required.
5. Ventilation Conditions
Natural Ventilation : Suitable for small dry-type transformers; adequate airflow must be ensured.
Forced Air Cooling : Larger-capacity transformers may require fan-assisted cooling (e.g., AN/AF cooling methods).
6. Installation Location
Indoor Installation : Recommended for power distribution rooms, data centers, and commercial buildings.
Outdoor Installation : Requires protective enclosures (weatherproof, dustproof), though prolonged exposure to harsh conditions is generally discouraged.
7. Vibration and Mechanical Shock
In high-vibration environments (e.g., factories, subway stations), transformers with robust seismic resistance or additional damping measures should be selected.
8. Electromagnetic Compatibility (EMC)
When used near sensitive electronic equipment, electromagnetic interference (EMI) from the transformer must be considered.
Conclusion
Dry-type transformers are designed for clean, dry, and well-ventilated environments. Avoid adverse conditions such as high temperatures, humidity, dust, and corrosive gases. For special environments, select appropriate protection ratings or customized solutions.
Post time: Jun-20-2025
