The thermal properties of high-voltage insulants

The thermal properties of high-voltage insulants

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Proceedings of the IEE - Part C: Monographs — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Lack of agreement between published values of the thermal properties of high-voltage insulants necessitates the development of relatively simple methods for their measurement. Transient methods for the determination of the thermal diffusivity of solids and thermal conductivity of fluids are described, with examples of their use and an estimate of their accuracy. Allowance is made for anisotropy in the case of solids. Suitable methods for determination of specific heat are discussed, and the importance of the rate of change of density of liquids with temperature is stressed.


    1. 1)
      • R.P. Jerrard . Temperature Drop to Resistance Temperature Detector in Stator Windings of Turbine Generators. Transactions of the American I.E.E.
    2. 2)
      • T.S. Taylor . The Thermal Conductivity of Insulating and other Materials. Electrical Journal
    3. 3)
      • The Thermal Resistivity of Solid Dielectrics. Journal I.E.E.
    4. 4)
      • H.D. Symons , Walker , Miles . The Heat Paths in Electrical Machinery. Journal I.E.E.
    5. 5)
      • W.J. King . The Basic Laws and Data of Heat Transmission. Mechanical Engineering
    6. 6)
      • L.F. Blume . (1951) Transformer Engineering.
    7. 7)
      • T.A. Marshall . An Apparatus for Measuring the Coefficient of Thermal Conductivity of Solids and Liquids. British Journal of Applied Physics
    8. 8)
      • G. Gotter . (1954) Erwärmung und Kühlung elektrischer Maschinen.
    9. 9)
      • V.M. Montsinger . Cooling of oil-Immersed Transformer Windings after Shut-Down. Transactions of the American I.E.E.
    10. 10)
      • A.H. Davis . Convective Cooling of Wires in Streams of Viscous Liquids. Philosophical Magazine
    11. 11)
      • H.H. Lorenz . Die Warmeübertragung von einer ebenen senkrechten Platte an Öl bei natürlicher Konvektion. Zeitschrift für Technische Physik
    12. 12)
      • J.F.D. Smith . Heat Transfer and Pressure Drop for an Oil in a Copper Tube. Transactions of the American Institute of Chemical Engineers
    13. 13)
      • G.W.C. Kaye , W.F. Higgins . The Thermal Conductivity of Certain Liquids. Proceedings of the Royal Society
    14. 14)
      • E. Schmidt , W. Leidenfrost . Der Einfluss elektrischer Felder auf den Wärmetransport in flüssigen elektrischen Nichtleitern. Forschung auf dem Gebiete des Ingenieurwesens
    15. 15)
      • Report on Researches on the Chemical and Physical Properties of Insulating Oils. Journal I.E.E.
    16. 16)
      • B.S. 148: 1951: ‘Insulating Oil for Transformers and Switchgear’.
    17. 17)
      • E. Jahnke , F. Emde . (1945) Tables of Functions.
    18. 18)
      • A N. Low An , A. Hillman . A Short Table of the First Five Zeros of the Transcendental Equation J0(x)Y0(kx) — J0(kx)Y0(x) = 0. Journal of Mathematics and Physics
    19. 19)
      • P. Narbutovskhi . Simplified Graphical Method of Computing Thermal Transients. Transactions of the American I.E.E.
    20. 20)
      • O.K. Bates . Thermal Conductivity of Liquids. Industrial and Engineering Chemistry
    21. 21)
      • B.C. Sakiadis , J. Coates . (1952) Studies of Thermal Conductivity of Liquids, Engineering Experiment Station Bulletins Nos. 34.
    22. 22)
      • E.F.M. Van der Held , F.G. Van Drunen . A Method of Measuring the Thermal Conductivity of Liquids. Physica
    23. 23)
      • B.H. Vos . Measurements of Thermal Conductivity by a Non-Steady-State Method. Applied Scientific Research A
    24. 24)
      • V.V. Mason , M. Kurtz . Rapid Measurements of the Thermal Resistivity of Soil. Transactions of the American I.E.E.
    25. 25)
      • T.N. Riley , T.R. Scott . Insulating Oils for High-Voltage Cables. Journal I.E.E.
    26. 26)
      • Allen, P.H.G.: `The Distribution of Temperature in a Layer-Type Transformer Winding', Proceedings of the BTH Third Summer School in Electrical Engineering, 1956, p. 47.
    27. 27)
      • S. Hasegawa , S.B. Garfinkel , A. Wexler . Simple Humidity Lag Apparatus. Review of Scientific Instruments
    28. 28)
      • A.B. Newmann . Heating and Cooling Rectangular and Cylindrical Solids. Industrial and Engineering Chemistry
    29. 29)
      • H.S. Carslaw , J.C. Jaeger . (1947) Conduction of Heat in Solids.
    30. 30)
      • : Application No. 17427, 1955, British Patent.

Related content

This is a required field
Please enter a valid email address