Insulating Oil


Also found in: Medical.

insulating oil

[′in·sə‚lād·iŋ ‚ȯil]
(materials)
A chlorinated hydrocarbon, such as trichlorobenzene, mixed with fluorinated hydrocarbons, whose high dielectric strength and high flash point allow it to be used in switches, circuit breakers, and transformers as an insulator and cooling medium. Also known as electrical oil.

Insulating Oil

 

(also electrical oil), a highly refined petroleum oil or, less often, a synthetic or vegetable oil that is used to insulate and cool electrical equipment, for example, transformers (seeTRANSFORMER OIL), capacitors, or cables. Insulating oils are distinguished by high dielectric strength (up to 25 megavolts/m) and have a resistivity of the order of 1010–1012 ohm-cm.

In the 1970’s, the world production of insulating oils amounted to about a million tons per year of petroleum oils and about 50,000 tons per year of synthetic oils.

REFERENCES

Krein, S. E., and R. V. Kulakova. Neftianye izoliatsionnye masla. Moscow-Leningrad, 1959.
Lipshtein, R. A., and M. I. Shakhnovich. Transformatornoe maslso, 2nd ed. Moscow, 1968.
Shakhnovich, M. 1. Sinleticheskie zhidkosti dlia elektricheskikh apparatov. Moscow, 1972.

insulating oil

A type of oil used within the enclosure of a transformer, switch, or other electric device, for insulating and cooling purposes.
References in periodicals archive ?
Insulating oil is meant to last the lifetime of a transformer and the performance of the oil is a key factor in the performance of the transformer.
Oxidation, as a reaction of oxygen and oil molecules resulting in degradation of the insulating oil properties, is largely accelerated by increased temperature, whereas increase of temperature by 10[degrees]C leads to approx, doubling of oxidation rate.
Before adopting this new standard practice, utilities typically tested for gases present inside a transformer's tank by drawing a once- or twice-yearly sample of its insulating oil, sending it off-site to a laboratory, and reviewing the results when the report became available a week or so later.
The collaboration will also include the review of testing and maintenance practices, looking for the root cause of historic failures and a comprehensive study of National Grid Saudi Arabia's in-house electrical insulating oil laboratories.
Among the topics are synthesizing cyclotriphosphazene containing an aminopropylsilicone functional group as a flame retardant, the design and analysis of an optical-communication-band sub-wavelength grating polarizer, the synthesis and electrochromic properties of crystalline three-dimensional urchin-like nanostructures, calculating the beating-up force for three-dimensional weaving, the aging process of vegetable insulating oil, an algorithm for extracting visual features from images of the surface of Mars, and self-learning by robots and the model of a Hamiltonian path with a fixed number of color repetitions for systems of scenarios creation.
Only several papers investigates partial discharge in oil (Sundara, 2009), (Chen, 2009) and studies of partial discharges in strongly divergent field in insulating oil (Cavallini, 2005).
Thompson is effective in reducing the ambient particulate matter in targeted fluids including diesel fuel, certain lubricating oils, and electric insulating oil, while also helping to improve engine performance.
Sulfur hexafluoride, or SF6, is used as insulation in electrical transmission and distribution equipment, such as circuit breakers and switching gear, often in place of insulating oil.
Tenders are invited for Repairing of udey make insulating oil tester at stage i&ii, Kgsc pophali