I. Series zyd double-stage vacuum transformer oil purifier machine is mainly used for purifying the insulating oil, transformer oil, mutual oil, switch oil, dielectric oil and so on. Specially, it works with the regeneration system, can decolor for the badly waste transformer oil with a high efficiency. V. It can vacuum filling oil to transformer, vacuum dry transformer and on-line operation transformer . Vi. The standard zyd system is designed for processing oils in workshops, in storage tanks or directly in transformers (energized or de-energized transformers). Vii. The oil technical data after series zyd oil purifier machine treatment: 1. Gas content less than 0.1% 2. Impurity size less than 1m without free carbon 3. Oil dielectric strength (breakdown voltage) more than 75kv 4. Acidity value less than 0.01 mgkoh/g 5. Dielectric loss factors at 90c less than 0.001 500kg, 1200*1000*1300(mm)