Donald Salazar

Commonly specified electric transformer oils include mineral insulating oil (IEC 60296), natural ester oils such as FR3, synthetic esters like MIDEL, and silicone transformer oils. The choice depends on voltage class, fire safety requirements, environmental regulations, and operating conditions.

A fuel oil furnace ignition transformer steps up line voltage to a high secondary voltage, typically several kilovolts, to create a spark across ignition electrodes. That spark ignites the atomized fuel oil in the burner, initiating stable combustion. The transformer is designed for intermittent high voltage duty, robust insulation, and reliable spark energy even when conditions are less than ideal, such as cold starts or slightly fouled electrodes. Modern systems may use electronic igniters, but classic ignition transformers remain common due to simplicity, ruggedness, and strong ignition performance in many burner designs.

PCBs were used for their superior insulating and fire-resistant properties, improving transformer safety and durability. Today, they are tightly regulated or banned due to severe health and environmental risks. Existing PCB equipment is subject to strict controls, mandatory labeling, regular inspections, and regulated disposal to prevent exposure and environmental contamination.

Small hydraulic oil filter machines start at ?4,000-7,000 depending on filtration grade, mobility, and sensor packages. Fluidex offers compact units with water removal and 3 µm filtration – ideal for workshops, factories, and service vans.

Fluidex and GlobeCore offer waste oil filter systems with multi-stage filtration, sludge removal, and vacuum dehydration. Ideal for service depots or utilities looking to recover used insulating or turbine oils and reduce disposal volume.

The tan delta test measures insulation aging – and oil condition directly affects results. High moisture or poor BDV in oil can falsely elevate tan delta readings. Using Fluidex purification systems before testing helps ensure results reflect solid insulation status, not just degraded oil.

The technology behind transformer oil regeneration revolves around several advanced processes:

Adsorption Technology: Activated clay or other adsorbents are used to remove acids, sludge, and oxidation products from the oil.
Vacuum Dehydration: Removes moisture and gases by lowering the boiling points through vacuum pressure.
Filtration: High-precision filters are used to remove solid contaminants from the oil.
Thermal Treatment: Heating the oil to improve its flow properties and facilitate the removal of impurities. These technologies ensure that the oil’s dielectric and thermal properties are restored to optimal levels.

Ultrasonic degassing is applied by immersing the oil in a container that is subjected to high-frequency ultrasonic waves. The cavitation process generates microscopic bubbles that collapse, displacing dissolved gases and forcing them to the surface of the oil. The gas can then be collected or vented, leaving the oil degassed and free of air bubbles.