​Even carrying through regular maintenance carefully installation and operation, the insulation oil may also be contaminated. The electrical equipment would fall in troubles as the declining of the oil’s insulation trait. The expenses and time spend in maintenance of the electrical equipment would far more than that of the insulated oil. 
The use of Vacuum Transformer Oil Purification and Regeneration Plant (Model SINO-NSH VFD-R) is necessary, which will help you maintain optimal oil cleanliness. VFD-R series is mainly used to improve the properties of insulation oil. It can remove trace water, gas, particulate matters, and remove colloid, pitches and sludge etc. from the insulating oil effectively and rapidly so as to boost performance of transformers, circuit breakers, mutual inductors, cable and capacitors which has insulation system. 

OIL DATA (After purification​):

Water:                             ≤ 5 PPM

Filter Fineness:              ≤ 5 µm (or ≤ 1 µm)

 Dielectric:                      ≥ 65kV~75kV

 Degassing:                    ≤ 0.1%

 Acid Value: ≤ 0.01 MgK0H/g

 Soluble Acid PH value: =5~7

 Dielectric loss tangent tg(90℃)% : ≤0.002 ​​

MACHINE SPECIFICATION:

 Flow rate:                       1,800 ~ 18,000 L/H

 Vacuum range:              -0.092~-0.099 Mpa

Working pressure:         ≤0.3 Mpa

​ Max vacuum range:      ≤ 50 Pa

 Temperature range:      20 ~ 80 ℃ (settable)​