Transformer oil due to environmental pollution and oxidation of the resin and thus the impact of sediment degradation occurred, or there is a fault in the transformer, will lead to its external shape change. Use of the outer shape of the transformer oil and transformer oil analysis to determine operating conditions is to make the most basic and intuitive method to judge.

Transformer with a good oily like the bottom of the glass sampling valve from the transformer to remove a small amount, the front of the sun careful observation, a good transformer oil should be clean and transparent, without precipitation, mechanical impurities, suspended material and cotton wool material, color should be yellow.

Oil sample color is brown or brown acid and its water-soluble acid is often close to or exceed international standards for note values, but its chromatographic analysis is not certain regularity. In general, the darker the Voltage Regulator Manufacturer, the oil should strengthen supervision of the chemical tests, shorten the experimental period, or can be said to be appropriate and then the. Transformer oil regeneration process should be to prevent accidents.

Dark color of the oil sample oil simplified analysis, the acid and water-soluble acids are seriously overweight. In general, dark colored oil, the oil may be aging, transformer failures.

Oil-like black oil color to simplify its analysis, the flash point is often close to or below the limit of international standards. Chromatographic analysis, hydrogen and acetylene is an important feature of components increased. Under normal circumstances, the color black oil within the transformer can be judged as possible or to discharge and discharges overheated transformer oil for transformer and black carbonized solid medium, the discharge will cause severe burning equipment, or even explosion. Flash point is too low can lead to transformer fire, or explosion. For the oil color black, and the low flash point of oil should be special attention.

Simplified cloudy white oil sample analysis, the breakdown voltage of the lower and higher hydrogen content is kind of cloudy white oil are two important features. Under normal circumstances, if the oil sample turbid white, it is likely that the oil contains water caused by the transformer oil can be broadly diagnosed as internal water moisture. Here is a simple way to learn about the value of breakdown voltage distribution transformer oil qualified or not, without the need for oil dielectric strength tester to determine. Take a colorless and transparent after drying of flat glass, from the bottom of the transformer sampling valve to remove a small amount of oil sample, so that the formation of the glass high 7cm oil column in well-lit place, the bottom of the cup close to the newspaper , from the look on the next through the oil column, if they can see the 6 words, the breakdown voltage of the oil sample should be more than 25kV. 10kV distribution Current Limiting Reactor in operation, the breakdown voltage of insulating oil required no less than 25kV.

Above, the transformer can be used as oily quality and transformer failures that may occur to make initial judgments. At the same time according to their different anomalies, a clear need for supervision of oil from pilot projects to equipment failure early on to make further accurate diagnosis.