Return to List

How to properly handle a dry-type transformer after it has been damp?

2024-01-23

How to properly handle a dry-type transformer after it has been damp?

When a dry-type transformer is damp, the following measures can be taken to address the issue:

  1. Drying treatment: If the transformer is not severely damp, natural drying methods can be used by placing the transformer in a ventilated area to allow it to dry naturally. Natural drying should maintain good ventilation and generally requires a long time; depending on the degree of dampness, the drying time may range from several days to weeks. If the dampness is severe, heating methods should be used, employing a hot air blower or heater to heat the transformer and evaporate the moisture inside. During heating drying, it is important to control the temperature and time to avoid overheating, which could cause deformation or damage to the insulation materials.
     
  2. Sealing treatment: Check and improve the sealing performance of the transformer to ensure that it does not become damp again during use. Sealing materials such as sealant and waterproof glue can be used to seal the gaps in the transformer. When sealing, ensure the quality and durability of the sealing materials while ensuring that the transformer can operate normally after sealing.
     
  3. Replacing seals: If the seals of the transformer are aged or damaged, leading to dampness, new seals need to be replaced. When replacing, pay attention to selecting seals that are the same as or compatible with the original ones and follow correct installation methods. Also, check the installation position and fit of the seals to ensure good sealing effectiveness.
     
  4. Inspection and maintenance: Regularly inspect and maintain the transformer, including checking its appearance, fasteners, insulation, etc., to promptly identify and address existing issues and prevent dampness. During inspection and maintenance, special attention should be paid to whether safety measures such as grounding and lightning protection are intact, while also monitoring the operating status and performance indicators of the transformer for timely adjustments and maintenance.
     
  5. Proper installation: When installing a transformer, consider environmental factors to avoid placing it in damp or rain-prone areas. Ensure that there is good ventilation for the transformer to prevent overheating due to overload operation affecting its normal functioning. During installation, follow relevant electrical safety standards and operating procedures to ensure installation quality and safety.
     
  6. Preventive measures: To avoid dampness in transformers, some preventive measures can be taken, such as maintaining good ventilation and cleanliness in the transformer room, regularly checking the sealing performance and moisture-proof measures of the transformer, etc. Also, take care to prevent small animals or insects from entering the transformer room to avoid unnecessary damage or accidents.

In summary, addressing dampness in dry-type transformers requires appropriate treatment methods and strengthening daily inspections and maintenance. Attention should also be paid to the operating status and performance indicators of the transformer for timely adjustments and maintenance. Safety issues should be considered during operations by following relevant electrical safety standards and operating procedures.

Previous:

What are the cooling methods for dry-type transformers?

Next:

The key function of dry-type transformers in power transmission.