The color of oil is mainly judged by the naked eye. The color of oil depends on the content of asphalt, resin and other coloring compounds in the oil. In addition, the color of the oil is also related to the temperature of the cut and the degree of refining. Such as domestic transformer oil No. 45. Because of the low temperature of the cut fraction, and the process of over refining and adding antioxidants, the appearance of the product is lighter and almost colorless.
Experienced oil analysts can often judge the quality of the oil according to its appearance, color, transparency and odour. The new transformer oil color yellow, clear and transparent, no suspension and bottom sediment, observe the oil from a certain point of view is blue.
With the use of transformer oil time growth, oil will gradually aging, oxide in oil and sludge will increase the color gradually deepened, transparency also decreased, the disappearance of the blue oil. When the oil contains more water, the oil will become cloudy and white. The new transformer oil has a slight smell of kerosene, and its odor becomes hot and sour after long running ageing of the oil. After the transformer fault in the transformer oil is a burnt smell.
The chroma of transformer oil is under specified conditions, a number of standard oil color closest color (color liquid) color instrument used for oil product color analyzer, color is the most intuitive test of oil refined oil quality index, but not the lower the better color, because of the transformer oil moderately refined, refined depth is too large or too small are used for oil had an adverse effect. Check the oil in the operating equipment. First of all, the chroma should be low, and the chroma rise during use will indicate the deterioration of the transformer oil.
Ji'nan Walton Petrochemical Co., Ltd. Shandong transformer oil to provide technical support, more exciting content, please enter: http://www.jnwdsh.com, we will be happy to answer for you.