The FLD 8.8D oil filtration machine is recognized for dielectric oil treatment having a 50 ppm moisture content and a dissolved gas content of approx. 10% by volume before being treated.
Parameters of the treated oil after one pass through the machine:
- maximum temperature – 80°C;
- moisture content – between 10 and 5 ppm;
- dissolved gas content – approximately 0.1% (or less) by volume;
- breakdown voltage – excess of 75 kV.
Under the same conditions an oil at 20 ppm will go out at 3 (or less) ppm after one pass.
The above figures are reached with oils having a 10-2 mbar distillation curve at a temperature of 80° C.
Principle of operation
The dielectric fluid enters in the system through an inlet strainer, and then passes through an inlet oil pump and into an oil heater, where it is heated by immersion heaters. After a fine filtration on cartridge, the dielectric fluid is sprayed into a vacuum hamber on a basket of Raschig rings. Finally, after the contaminants are eliminated, the clean treated fluid flows through the outlet oil pump.
Fluidex Transformer Oil Filtration Machine – FLD 8.8D
1 Nominal flow during treatment, gpm (liters/hour)
8.8 (2,000)2 Maximum total heating power, kW
313 Maximum total power, kW
364 Number of heater sections
25 Maximum power of one heating element, kW
1.76 Filtration (by cartridges in nominal), µm
≤17 Number of filtration stages
28 Number of cartridges in the stage
1 (one)9 Filter clogging control
Pressure indicators10 Operating vacuum, psi (MPa)
-8.7 ̴ 14.35 (-0.06 ̴ 0.099)11 Operating pressure, psi (MPa)
≤72.5 (≤0.5)12 Temperature range, ºF (ºС)
68 ̴ 176 (20 ̴ 80)13 Power supply parameters
Any options on customer’s request14 Dimensions (without trailer), in (mm)
– length 102 (2,600)
– height 49 (1,250)
– width 59 (1,500)
15 Weight (without trailer), lbs (kg)
2,205 (1,000)