The dielectric properties of transformer oil (e.g., breakdown voltage or dielectric loss factor) can be significantly improved by degassing and the removal of water and moisture from the oil. Only clean and uncontaminated oil with the correct specifications is suitable as the liquid insulation for electric power transformers.
Often though, even new and unused transformer oil can be considered unclean and unsafe for use in electric power transformers as the oil can become contaminated during transport from the oil producer to the transformer operator. During the time the oil is being used in the transformer, it will absorb moisture, dirt particles, fibers, soot and other products of oil and transformer aging.
The transformer oil therefore, needs to undergo a comprehensive filtering process. The filtering process must be able to remove contaminants that includes solids, free and dissolved water and dissolved gases.
The filtering process of transformer oil is a complex procedure of removing the above described contaminants down to acceptable levels. In recent studies, experts have revealed that serious problems can occur when insulting oil makes contact with moisture, flammable gases, and other transformer decay products. In order to make the necessary correction, the operator should regularly monitor the condition of the insulating oils.
Companies that produce equipment for processing transformer insulating oils, cover a wide range of services and products. They include such things as machinery for filtering transformer oil, insulation oil cleaners, cleaning systems for lubricants, machines to filter hydraulic oil, regeneration equipment for turbine oils and other industrial oil filtering equipment. In recent decades, there has become a comprehensive network of high-tech enterprises that operate around the world. They provide integrated systems and parts for the implementation of the transformer oil filtering and regeneration processes.
The transformer oil filtering process is a continuous circulation of oil through purification units in a closed loop system. The oil passes through several filters of both coarse and fine filter mediums before the system further cleans the oil through a vacuum drying, degassing and adsorption process. The process is designed to remove dirt, sludge, foreign particles, dissolved gas and other contaminants found in the oil. Moreover, the filtering unit can continuously analyze and control the oil at all stages of the purification process.
All systems for filtering transformer oils should have certain safety features built in such as liquid level detectors and pressure sensors. These safety features should be incorporated into the design of the cleaning equipment. They are needed in order to maintain the necessary level of oil inside the transformer and to prevent oil spills
The design of filters and pumps should provide for a filtering process, vacuum and degassing process that is powerful enough to quickly and efficiently process oil, without affecting the continued operation of electric power equipment. Assessment of the effectiveness of the process is provided with tools for monitoring flow rate.
GlobeCore does all of this and more! GlobeCore has a line of oil processing equipment that has become the most popular and cost effective equipment in the industry. Take a look at GlobeCore and see if your company can benefit from the GlobeCore Process! See more video about transformer oil purification
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