High water saturation protects insulation system to extend life.
As a synthetic ester, the chemical make-up of Envirotemp™ 200 enables high water saturation (2700 ppm vs 55 ppm for mineral oil). This is an important feature for maintaining a fluid’s dielectric strength.
Because mineral oil is hydrophobic, the water stays in the paper. Since Envirotemp 200 fluid is comparatively hydrophilic, water is absorbed by the fluid or wicked away from the insulation paper. By taking water out of the insulation paper, the aging of the paper is slowed and the life of the insulation system as well as the transformer asset is therefore extended.