Roque Cruz

Price is driven by base stock type, additive package, quality grade, and certification requirements. Mineral oil pricing tracks refining feedstock costs and regional supply. Ester fluids usually cost more due to raw material and processing, but may reduce fire mitigation or environmental costs. Packaging, transport, and hazardous or special handling requirements affect delivered cost. For utilities, large volume contracts, supplier qualification, and testing documentation can influence price. Local taxes, import duties, and currency exchange also create regional differences, especially where oil must be shipped long distances.

Oil replacement is expensive and environmentally sensitive. Instead, most operators now use purification or regeneration every 3-5 years. Fluidex systems restore oil quality onsite – reducing waste, cost, and transformer wear. Full replacement is needed only when degradation is irreversible.

After vacuum drying, degassed oil is filled under vacuum from the bottom of the tank. This prevents air ingress and moisture contamination. Fluidex offers transformer oil filling systems integrated with degassing and heating modules – used in manufacturing and substation service.

The best systems combine fine filtration, vacuum dehydration, and – optionally – regeneration columns. Fluidex builds used oil filtration systems tailored to transformer, turbine, or hydraulic oils. These reduce maintenance costs, minimize downtime, and extend oil usability across multiple service cycles.

When transformer oil has absorbed high levels of moisture, a vacuum dehydration oil purification system is required. Fluidex systems use multi-stage filtration and high-vacuum degassing to remove water content down to <10 ppm. These units are ideal for restoring BDV and preventing insulation failure. Available in skid or trailer format for industrial deployment.

Vacuum drying is the industry standard for drying transformer insulation before oil filling. This ensures that moisture absorbed by paper or cellulose insulation is completely removed. Fluidex offers vacuum drying units specifically designed for transformer tanks. These units are commonly used after repairs or during manufacturing of new transformers. Skipping this step can drastically reduce insulation lifespan, so it’s a must-have for any serious transformer maintenance process.

Purification oil (usually an essential oil blend) is used by adding a few drops to a diffuser to cleanse the air and eliminate odors. It can also be mixed with water in a spray bottle for surface cleaning or used topically when diluted with a carrier oil. In industrial settings, purified oil is used to improve lubrication, cooling, or insulation properties in machinery.