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Standards and insulation characteristics of oil-insulated transformers
Electrical Engineering, 1945THE STRENGTH of the insulation in transformers to resist various types of voltage stress is very important. The service and life of the transformer is partially dependent on the insulation strength, and in recognition of this fact standards for insulation strength long have been established. In the course of time improvements have taken place in design,
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2019
The purpose of this chapter is to determine the characteristics and test methods of unused mineral oil containing additives or without additives used in transformers in which oil has been used as the insulator.
Behrooz Vahidi, Ashkan Teymouri
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The purpose of this chapter is to determine the characteristics and test methods of unused mineral oil containing additives or without additives used in transformers in which oil has been used as the insulator.
Behrooz Vahidi, Ashkan Teymouri
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1988
Description This symposium was organized to update information on the important role of petroleum-based oil as an insulating and heat transfer agent in electrical apparatus.
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Description This symposium was organized to update information on the important role of petroleum-based oil as an insulating and heat transfer agent in electrical apparatus.
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Insulating Oils for Transformers
2013International ...
Beroual, Abderrahmane +2 more
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Corona measurements on oil-insulated transformers
Electrical Engineering, 1957A description is given of a technique recently devised which permits the accurate determination of corona. With proper discrimination between external corona in air and internal corona in voids and corners under oil, quantitative measurements may be made on oil-insulated transformers.
E. J. Adolphson, F. J. Vogel
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Insulating Oil for Underwater Oil Production Equipment
Chemistry and Technology of Fuels and Oils, 2003The problem of using electric insulating oils in underwater oil production equipment is examined. The results of comparative studies of the physicochemical and insulating properties and thermooxidative stability of domestic and foreign oils of this class are presented.
V. V. Grigor'ev +3 more
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Insulation Characteristic Analysis of Coconut Oil and Palm Oil as Liquid Insulating Material
International Journal of Simulation: Systems, Science & Technology, 2016The paper presents a study which has been carried out to use coconut oil as insulation in transformers. In transformer, oil is used as a coolant and also as an insulator. Nowadays, petroleum based oil is widely used in the transformer as it meets the requirements to be the best insulator.
Mohd Jamail, Nor Akmal +2 more
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Emergency Overloads for Oil-Insulated Transformers
Transactions of the American Institute of Electrical Engineers, 1942IN periods of high industrial activity transformer loads are generally high, and it is essential that operators know what overloads they can carry safely in emergencies. In order to do this effectively, it is necessary to know what temperatures will be reached after various overloads for different durations of time and the effects of temperature and ...
F. J. Vogel, T. K. Sloat
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D-C cleanup in insulating oils
Electrical Engineering, 1935Three unusual types of behavior of insulating oils have been subjected to a series of experiments which indicate that all 3 are closely related. These types of behavior are the reduction of conductivity and a-c dielectric loss following a sustained application of continuous potential (called ``d-c cleanup''), the current-time relation under continuous ...
J. B. Whitehead, S. H. Shevki
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Journal of the Institution of Electrical Engineers - Part I: General, 1942
In this paper, an endeavour has been made to indicate the present position in this country of the insulating oils and compounds which are available for cables, and to describe their behaviour in impregnating plants.The oils are of the paraffinic and naphthenic types and either class may be used in oil-rosin compounds.
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In this paper, an endeavour has been made to indicate the present position in this country of the insulating oils and compounds which are available for cables, and to describe their behaviour in impregnating plants.The oils are of the paraffinic and naphthenic types and either class may be used in oil-rosin compounds.
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