The Zhongneng Oil regeneration system (Series ZYD-I) has been specially designed for on site use to completely regenerate insulating oils in energized or de-energized transformers especially for the power, which is over 110KV. Also it can inject the insulating oil into the transformers on-line. The ZYD-I system provides regular oil purification such as degassing, drying and particulate removal but also can remove acidity, sludge, other soluble oil decay products and discoloration. This is accomplished by the use of high vacuum degasification technology and particulate filters combined with our special brand of earth. After treating, the oil can be reused as new. For special application, the system also can be mounted on a leak proof base and can be installed and operated on a trailer. (oil purifier, oil purification, oil filtration, oil recycling, oil treatment, oil regeneration, oil restoration, oil filtering, waste oil disposal, oil reclaiming, waste oil management, energy saving, oil reconditioned, oil reconstituted, oil restituting, oil recovering ,oil filtration, oil filter) Wooden case