Solution for determination of acid value of insulating oils
Solution for determination of acid value of insulating oils
The acid value of transformer insulation oil indicates that the oil contains acid substances, that is, the total value of organic acids and inorganic acids, generally expressed by the mg number of potassium hydroxide required for neutralizing acid substances in LG insulation oil.
For the unused new transformer oil contains almost no acid substances, its acid value is quite small, but the oil in long-term storage, especially after charging electrical equipment into operation, it will inevitably contact with the oxygen in the air, and the oil is easy to be aging.
In the initial stage of oxidation, low molecular organic acids are mainly generated, and further oxidation produces high molecular organic acids and acid products. After the existence of the above kinds of acid substances in insulating oil, it will improve the conductivity of oil, reduce the insulation of oil, and may produce corrosion of metal.
In the case of high operating temperature (above 80 ℃), promote solid fiber paper insulation material aging phenomenon, so as to shorten the service life of the equipment. For the unused transformer oil acid value is generally 0.03mgKOH/g, for the operating oil control acid value is not greater than 0.1mgKOH/g.
Transformer oil insulation oil acid value detection method is in accordance with GB/T264 this standard test, Shandong Shengtai instrument SH108 automatic acid value instrument is designed and made in accordance with this method, automatic transformer oil acid value instrument SH108 is the use of color touch screen operation, reagent is fully equipped, put the sample can be tested, Can automatically measure the results, automatic printing, improve work efficiency, the use of the instrument can better detect the transformer oil acid value value.
SH108 automatic oleic acid number meter in line with the People's Republic of China standard GB/T 264 "petroleum products acid number determination method" and GB7599, GB7299 requirements. The instrument adopts blue LCD screen display, Chinese menu, no identification button. Microcomputer automatic measurement, automatic printing, test process to achieve microcomputer automation
It can meet the needs of oil refineries, power plants and scientific research units. It is one of the necessary instruments for oil analysis and quality inspection.