Transformer Oil Filtration Plant

Transformer Oil Filtration PlantTransformer oil It is a highly refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties.Derived from napthenic or paraffinic crudesIt acts as dielectric material / effective coolant

TO Characteristics as per IS:335Density(0.89gm/cm @ 29.5 C)Kinematic viscosity(max. 27 cst @ 27 C)Moisture Content(max. 50 ppm)Dielectric Strength-BDV minimum 30KV for 2.5mm gap (unused oil)BDV minimum of 60 KV after filtrationDissipation factor , tan(max. 0.002 at 90C)Resistivitymin. 1500 10 ohm-cm at 27Cmin. 35 10 ohm-cm at 90CAcidity(max. 0.03 mg-KOH/gm)Sludge formation in ageing test (max. 0.05% by weight) in oxidation test (max. 0.10% by weight)

Degradation in Transformer oilEffect of moisture on BDV

The presence of even 0.01% water in transformer oil reduces its electrical strength to 20% of the dry oil value.Reconditioning of TOFilters-removes contaminants in suspensionCentrifuges-solid as well as liquid contaminants can be removed Vacuum dehydrators-removes the dissolved gases and water contentsIonic Reaction Column(alumina,fuller's earth) for reducing acidity

CentrifugeEdge filterFilter PressDEGASSING /DEHYDRATION CHAMBER

A high vacuum(upto -30mm) is maintained to evacuate the gases and moisture7Components of our plant