The Index Achieved After The Amorphous Distribution Transformer Oil Is Filtered

Amorphous distribution transformer oil is a kind of oil that everyone is familiar with. During the use of transformers, especially high-quality transformer oil will be good for transformers, otherwise the transformer will be damaged. For transformer oil, it is only in the state of filtration that various indicators can be achieved, otherwise it is difficult to achieve the goal.
1. amorphous distribution transformer acid value The ultra-limit value is greater than 0.1mgKOH/g. There are 4 possible reasons for exceeding the limit value: overload operation; consumption of antioxidants; wrong oil supply; oil contamination. The following countermeasures can be taken if the acid value exceeds the limit value: investigate the cause, increase the number of tests, measure the content of antioxidant and add it appropriately, regenerate the transformer oil, and change the oil if it is economical and reasonable.
2. The ultra-limit value of water-soluble acid is less than 4.2. There are 2 possible reasons for exceeding the limit value: oil aging; oil contamination. The following countermeasures can be taken for water-soluble acid exceeding the limit value: increase the number of tests, and compare with the acid value to find out the reason. Carry out oil regeneration treatment, if economical and reasonable, oil change treatment can be done.
3. amorphous distribution transformer breakdown voltage Its ultra-limit value is less than 20KV. There are two possible reasons for exceeding the limit value: the water content in the oil is too large; the oil is polluted by impurity particles. The following countermeasures can be taken if the breakdown voltage exceeds the limit value: find out the cause, carry out vacuum oil filter treatment, plate and frame pressure oil filter treatment or replace new oil. Generally, the breakdown voltage of the oil after vacuum oil filtration is required to be greater than 50KV.
4. amorphous distribution transformer flash point Its ultra-limit value is less than 130°C. Or drop 5°C from the previous test value. There are two possible reasons for exceeding the limit value: the equipment has a local overheating fault; the wrong oil is supplied. The following countermeasures can be taken if the flash point exceeds the limit value: find out the cause and eliminate the fault; degas the vacuum oil filter or change the oil.
5. appearance If the appearance is visually opaque, there are visible impurities or suspended matter. Or if the oil color is too dark, the appearance of the oil is abnormal. The possible causes of abnormal appearance are: the oil contains moisture, fiber, carbon black and other solids. The following countermeasures should be taken for oil with abnormal appearance: If the oil is cloudy, turbid and whitish, it indicates that the oil contains water, and the water content should be checked. If it is found that the oil contains carbon particles, the oil color is black, or even has a burnt smell, it may be that there is an arc or partial discharge fault inside, and it should be combined with other tests to investigate the cause and eliminate the fault. If the color of the oil is dark and the color of the oil changes significantly, attention should be paid to whether the aging of the oil is accelerated, which can be combined with the acid value test analysis of the oil, or the monitoring of the operating temperature of the oil should be strengthened.
The above is the relevant performance of the transformer oil after filtering. For the transformer oil, it is necessary to achieve such a quality, so that the transformer oil will meet the standard. Otherwise, there is a problem with the transformer oil, which is not good for the overall operation of the transformer.