Title :
Effects of ultrasonic agitation on electrical properties of insulating oils
Author :
Vincent, C. ; Crine, J.-P. ; Olivier, R.G.
Author_Institution :
Inst. de Recherche d´´Hydro-Quebec, Varennes, Que., Canada
fDate :
7/1/1993 12:00:00 AM
Abstract :
It is shown that ultrasonic agitation of insulating oil in service (i.e. contaminated oil), as proposed prior to electrical-breakdown tests, does not affect its chemical structure. On the contrary, it homogenises particles within the sample giving it a more realistic breakdown-strength value far more representative of actual values under service conditions.
Keywords :
electric breakdown of liquids; insulating oils; insulation testing; suspensions; transformer insulation; ultrasonic effects; breakdown-strength; chemical structure; contaminated oil; electrical properties; electrical-breakdown tests; homogenisation; insulating oils; ultrasonic agitation;
Journal_Title :
Science, Measurement and Technology, IEE Proceedings A
