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Why the purification of transformer oil is mandatory?

Time:2024-11-20 11:31:13  Reading volume:

The purification of transformer oil is essential to ensure the efficient and reliable operation of transformers. Transformer oil acts as both an insulator and a coolant, and its quality directly impacts the performance and longevity of the transformer. Here are the key reasons why purification is mandatory. 

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 1. Removal of Moisture

- Problem: Moisture can reduce the dielectric strength of transformer oil, increasing the risk of electrical breakdown.

- Solution: Purification removes dissolved and free water, ensuring the oil maintains its insulating properties and reduces the risk of transformer failure.

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 2. Elimination of Impurities and Particulates

- Problem: Solid contaminants, like dust, metal particles, or sludge, can clog internal components, impair heat dissipation, and accelerate wear and tear.

- Solution: Filtration and purification remove these impurities, improving oil performance and protecting internal components.

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 3. Degassing

- Problem: Gases such as oxygen, hydrogen, and hydrocarbons can form in transformer oil due to thermal and electrical stress. These gases reduce insulation properties and indicate potential faults.

- Solution: Purification involves degassing, which eliminates these dissolved gases and restores oil quality.

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 4. Maintenance of Dielectric Strength

- Problem: Contaminated oil has reduced dielectric strength, increasing the likelihood of arcing or electrical breakdown.

- Solution: Purification enhances dielectric strength, ensuring the transformer can handle high voltage loads safely.

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 5. Prevention of Sludge Formation

- Problem: Oxidation of oil forms acidic compounds and sludge, which settle on transformer components, reducing heat dissipation and increasing thermal stress.

- Solution: Purification removes oxidation byproducts, extending the life of both the oil and the transformer.

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 6. Cost Efficiency

- Problem: Replacing contaminated transformer oil can be expensive and time-consuming.

- Solution: Regular purification restores oil to optimal condition, reducing replacement costs and downtime.

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 7. Ensuring Compliance and Safety

- Problem: Transformers with poor oil quality are more prone to failures, posing safety risks and potentially violating regulatory standards.

- Solution: Purification ensures the transformer operates within safety and compliance standards.

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 Conclusion

Purification of transformer oil is mandatory to:

- Ensure optimal electrical insulation and cooling.

- Prolong the life of both the oil and the transformer.

- Reduce maintenance costs and prevent catastrophic failures.

 

Regular oil testing and purification should be part of any transformer maintenance plan to ensure reliable and safe operation.


purification of transformer oil