Isolatsioonõli

Isolatsioonõli, also known as insulating oil or dielectric oil, is a specially refined mineral oil used in electrical equipment such as transformers, circuit breakers, and capacitors. Its primary function is to provide electrical insulation and dissipate heat. The high dielectric strength of the oil prevents electrical arcing between live components and the grounded casing of the equipment. This insulation is crucial for the safe and efficient operation of high-voltage electrical systems.

Beyond its insulating properties, isolatsioonõli also serves as a coolant. In transformers, for instance, it circulates through the windings and core, absorbing the heat generated during operation and transferring it to radiators where it can be dissipated into the surrounding air. This cooling mechanism is vital to prevent overheating and potential damage to the equipment.

The quality of isolatsioonõli is paramount. It must be free from moisture, dissolved gases, and conductive impurities, as these can significantly degrade its dielectric properties. Regular testing and maintenance of the oil are therefore essential to ensure the reliability and longevity of electrical apparatus. Over time, the oil can degrade due to oxidation and other factors, requiring filtration or replacement. Its use is widespread in power transmission and distribution networks worldwide.