Transformer Oil Filtration Machine – FLD 8.8D

• Description

  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.

• Specification

  №	Parameter	Value
  1	Nominal flow during treatment, gpm (liters/hour)	8.8 (2,000)
  2	Maximum total heating power, kW	31
  3	Maximum total power, kW	36
  4	Number of heater sections	2
  5	Maximum power of one heating element, kW	1.7
  6	Filtration (by cartridges in nominal), µm	≤1
  7	Number of filtration stages	2
  8	Number of cartridges in the stage	1 (one)
  9	Filter clogging control	Pressure indicators
  10	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 request
  14	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)

• Advantages

  Fluidex’s vacuum oil purifier offers several significant advantages. Firstly, it increases the dielectric strength of the transformer oil to at least 75 kV, ensuring superior insulation performance and reliability. Additionally, the system facilitates the simultaneous drying of transformers while processing the oil, enhancing the overall efficiency of maintenance operations. This equipment is also adept at the initial filling of electrical apparatus with insulating oil, providing a clean and contamination-free environment for optimal functioning. Furthermore, it allows for the evacuation of transformers and other electrical equipment, ensuring the removal of moisture and air to prevent dielectric breakdown. The system is designed for straightforward operation and maintenance, making it user-friendly and cost-effective for long-term use.

• Application

  FLD 8.8D oil purifiers with a two-stage vacuum system can be used in the energy sector and other industries for filtering, drying, and deep degassing of the following types of dielectric fluids:

  • transformer oils;
  • silicone oils;
  • Midel 7131 dielectric fluids;
  • FR3 fluids.

  Additionally, FLD 8.8D oil purifiers can be used for heating transformer oil, filling oil into a transformer under vacuum, or vacuuming the transformer.