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TRANSFORMER OIL FILTRATION All high capacity transformers in use today have to cope with voltages in excess of 400kV. Therefore it becomes imperative to maintain optimal insulation properties of the transformer oils by rigid control over moisture, dissolved gases, particulate contamination and acidity.
Transformer oils deteriorate with time and the decay begins the moment the transformer oil is High temperatures, the presence of oxygen and water, the catalytic action of the materials within the transformer, all combine to result in oxidation and cracking of the transformer oil. The by-products of this oxidative process are acidic in nature, which results in an ever-increasing rate of deterioration of the transformer and its oil. This type of contaminated oil completely loses its insulating properties which will affect the life of the transformer in the long run. Hence the insulation properties of transformer oils should be maintained periodically by filtering this oil by using our service.
OM NSG Filtration Services has mobile oil filtration systems and experienced staff to perform the following on-site services.
• Oil filtration & dehydration of insulating fluid using hot oil circulation
• Filtration of transformer oil using 0.5 and 1 micron filter
• Vacuum drying of the core coil and insulation system using the hot oil fill method
• BDV (breakdown voltage) test to determine quality of filtered transformer oil
The periodic and proper treatment of transformer oil will result in the improvement of the properties of the entire insulating system of power transformers and will extend the effective lifetime of the asset. |
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