FR3 is a natural ester fluid derived from vegetable oils, like soybeans . It includes additives to help with oxidation stability, operation at cold temperatures, and a green dye to differentiate it from other fluids.
Is FR3 natural ester oil?
Envirotemp FR3 fluid is a natural ester fluid derived from renewable vegetable oils – providing environmental benefits that are superior to mineral oil and unsurpassed by any other dielectric coolants.
What is FR3 oil?
Envirotemp® FR3 fluid is a Fire Resistant Natural Ester dielectric coolant specifically formulated for use in distribution and power transformers where its unique environmental, fire safety, chemical, and electrical properties are advantageous.
Is FR3 environmentally friendly?
FR3 fluid’s physical and chemical properties provide environmental benefits that are superior to mineral oil. As a natural ester dielectric fluid, FR3 fluid is derived from vegetable oil (>95%)—a 100% renewable resource—and is reclaimable and recyclable .
Can you mix FR3 and mineral oil?
(a) Envirotemp with mineral oil: FR3 is fully miscible with mineral oil . However, mineral oil content greater than 7% in FR3 will lower the fire point below 300 C.
Why is it called mineral oil?
Mineral oil is any of various colorless, odorless, light mixtures of higher alkanes from a mineral source, particularly a distillate of petroleum, as distinct from usually edible vegetable oils. The name ‘mineral oil’ by itself is imprecise , having been used for many specific oils over the past few centuries.
Is FR3 an oil?
FR3 is a natural ester fluid derived from vegetable oils , like soybeans.
What are natural esters?
Natural esters are made from renewable natural sources , for example MIDEL eN 1204 (rapeseed/canola) and MIDEL eN 1215 (soybean). The base oil is chosen to give the best possible fit to the application; however unlike synthetic esters the properties of these base oils cannot be significantly altered.
Is ester oil toxic?
Both varieties of ester fluids are free from petroleum, siloxanes and halogens. They are non-toxic , non-carcinogenic and completely biodegradable.
Is oil a dielectric?
All lubricating oils are dielectrics to varying degrees . A capacitor is a classic example of using a dielectric. A capacitor stores an electric charge which can then be discharged later.
Is FR3 flammable?
Unlike mineral oil, FR3 fluid is classified as a K-class, “high-fire-point,” “fire-resistant,” and “less-flammable” fluid . Also classified as “nonpropagating,” it is self-extinguishing, and will not continuously burn if ignited. ... FR3 fluid is UL classified 2 and FM Global approved.
What type of insulating oil is biodegradable?
Due to excellent bio-degradable and fire-resistant characteristics, vegetable oil is popularly used as an insulating medium for transformer. Besides that, the availability of vegetable oil is abundant. Vegetable oil is obtained from crushing of seeds.
What is a KNAN transformer?
KNAN is a transformer that uses less flammable non-mineral oil such as silicone oil, synthetic ester or natural ester (FR3) as the insulating fluid with natural air convection cooling. KNAF has same transformer oil as KNAN but with external forced air cooling.
Why do they put mineral oil in transformers?
Transformer oil is a mineral based oil that is commonly used in transformers for its chemical properties and dielectric strength. This oil in your transformer acts as an insulator and a cooling agent . ... The acid will form sludge which settles on the windings of the transformer resulting in reduced heat dissipation.
What liquid is inside a transformer?
Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers.
Which liquid is used in transformer?
Mineral oil is one of the most commonly used insulating liquid [1]. It is used in many electrical equipment, such as power transformers. The universality of application of mineral oil results from its many positive qualities and its very good recognition over the years.
