Transformer Oil Testing Methods for quality assurance

 Oil plays a significant and critical role in keeping the transformers running efficiently. It is also known as insulating oil and serves as liquid insulation in electrical equipment and also vanishes heat from such equipment. It can be said that it is a lifesaver for any equipment because it avoids any type of oxidation. A transformer is a key element of the power grid for efficient electricity distribution with minimal energy loss. A transformer can also be a failure and negatively affect the electricity grid system which can result in accidents and financial damage. The best quality oil must be used by using the testing method to ensure it is of good quality.

Transformer Oil acts as a barrier between the atmospheric oxygen and the cellulose to avoid direct contact. The level of oil is measured by Magnetic Oil Level Gauge (MOG).

Transformer oil testing methods prove to be loss prevention which is good to take precautionary measures. It helps us to improve the maintenance, order necessary parts, and materials. It analyzes whether it is working properly and also detect problems like repairs, costly downtime, and loss in production. It keeps the transformer cool as the voltage in electrical transformers is high which can result in damage to the core and winding. The oil acts as a protective barrier and allows the electricity to pass through without heating the core. Here are some techniques used for transformer oil testing which will give you quality assurance.

  • Color: There is a numerical value (0-5) based on the series of the color standards you can compare it with the earlier oils used in the transformer. If the color darkens then it is contaminated.

  • Dielectric breakdown: It measures the breakdown of voltage at which the oil fails electrically indicating the presence of water, dirt, particles, moist cellulosic fibers, etc. If more than one of these items are found then it will contribute to a low dielectric breakdown value.

  • Dissolved Gas Analysis: It can give an early indication of abnormal conditions inside the transformer as it identifies various gas ppm levels. The DGA sample must be kept airtight to avoid any escape of atmospheric gases because it will affect the test results.

  • Power Factor: It is useful to measure the changes within the insulating oil. In mineral oil, the power factor of new oil should not exceed 0.05 percent at 25 degrees C.

  • Moisture Content: It lowers the dielectric strength which can damage the transformer. This test does not measure the water content in the transformer. The maximum moisture content is 35 ppm accepted for mineral oil.

Texol’s range of industrial and transformer oils in UAE is designed to meet the specific requirements of various industries and operations. They also offer a wide range of gandhar transformer oil for various segments like engineering, steel, textile, cement, or sugar to create a long-term commitment with their clients.

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