It is mainly used for purifying the insulating oil in all kinds of large power equipments that are above 110kv especially for the altitude is over 500 meters .Comparing with the single-stage vacuum oil purifier,this machine dewaters,degases and removes the impurities more quickly,more completely,and makes the oils limiting voltage-withstand value much higher.As the bridge-type vacuum linking system.it is used for filtrating system as well as an independent vacuum power supply to vacuum oiling of power equipment.
Re-refining to remove acids and particulate material
Dehydrating to remove free and dissolved water, including insulation dry-out of the windings.
Degassing to remove other dissolved combustible gases such as Acetylene, Ethylene, Ethane, Methane, Hydrogen and Carbon Monoxide, and Carbon Dioxide.
Index Before Purification(from customer for your reference)
water content ≤50ppm
gas content ≤10 %(by volume)
breakdown voltage ≥30KV/2.5mm
particle qty≤70000 (5-50micron)
Index after purification (test at oil-outlet of the machine) :
water content≤ 5ppm
gas content≤0.1%( by volume)
breakdown voltage≥75KV (Spherical polar)
particle qty in 100ml oil≤500 (5-50 micron), (0 for ≥100 micron particle).
dielectric loss tgδ≤0.3% (90°C)
acid value ≤0.1mgKOH/g