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What is the maximum temperature of transformer oil filtration?

Time:2025-03-31 13:09:34  Reading volume:

The maximum temperature of transformer oil during filtration is usually controlled according to the characteristics of the oil and the requirements of the equipment, and generally follows the following standards:

 

1. General Limits:

- It is generally recommended that the filtration temperature should not exceed 60°C~65°C. This range can maintain the fluidity of the oil and avoid oil oxidation or additive decomposition caused by high temperature.

 

2. Special Conditions:

- If a vacuum oil filter is used, the temperature may be allowed to rise to 70°C~80°C for a short time (strictly monitored) to improve the dehydration efficiency, but it is necessary to ensure that the equipment is resistant to high temperatures and the time is short.

- Some synthetic oils or specially formulated oils may allow higher temperatures, but the manufacturer's instructions must prevail.

 

3. Precautions:

- Oxidation Risk: Long-term high temperature will accelerate the aging of the oil and generate acidic substances or sludge.

- Safety Specifications: It must comply with standards such as IEC 60422 or GB/T 14542 to ensure that the insulation performance is not damaged.

 

Recommendation: Before operation, please consult the equipment manual and oil technical parameters, monitor the temperature in real time, and give priority to the filtering conditions recommended by the manufacturer.


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