Results 251 to 260 of about 179,026 (288)

The effect of heat on paper insulation

Journal of the American Institute of Electrical Engineers, 1921
A discussion is given in detail of the mechanical properties of paper especially as influenced by drying, heating, and impregnating. Tests for measuring the changes due to these causes are discussed and it is shown that tensile tests are unsatisfactory for this purpose.
H. W. Fisher, R. W. Atkinson
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Electrical Insulating Papers - an Overview

IEEE Electrical Insulation Magazine, 1987
Electrical grade natural fibers continue to play an important role as components in dielectric systems.
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Stability of impregnated-paper insulation

Electrical Engineering, 1942
Results obtained in the AIEE-Engineering Foundation research project on the stability of impregnated-paper insulation, since its inception in 1936, are reported briefly. Some unexpected properties of impregnated-paper insulation have been discovered and findings pertaining to paper density, high-stress internal ionization as the origin of failure, and ...
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Insulating paper ageing and furfural formation

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480), 2004
Transformer condition monitoring is carried out regularly to establish state of the health of transformer. Based on results corrective actions are taken to preserve and prolong the lifetime of the unit. All insulation materials used in construction of transformer are, made from organic compounds and therefore, decomposes and deteriorates at high ...
P. Pahlavanpour, null Eklund, M.A. Martins   +2 more
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Air and moisture versus paper insulation

Electrical Engineering, 1931
THIS is the third of a series of studies into the still open question of the influence of residual air and moisture upon the properties of impregnated-paper insulation. The influence of residual moisture was found to be universally bad and increasing amounts of such moisture are immediately reflected in higher values of power factor and loss and in ...
J. B. Whitehead, F. Hamburger
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Properties of Saturants for Paper-Insulated Cables

Transactions of the American Institute of Electrical Engineers, 1937
The results of tests made on 9 viscous mineral oils of various types and on mixtures of these oils with 8 resins are presented. The physical and electrical properties, stability to oxidation, and stability to gaseous ionization are correlated with the viscosity index and chemical composition of the oils and resins.
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Thermal ageing of oil-paper insulation

10th International Conference on Conduction and Breakdown in Dielectric Liquids, 2002
Detailed knowledge of the behavior of oil-paper insulating systems under accelerated thermal load is of interest in the operation of power transformers under increased electrical demands. The authors report on experiments on neutral kraft paper and naphthenic mineral insulating oil.
R.M. Morais, E. Engelstein
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Linear paper insulated rectangular magnet wire

1977 EIC 13th Electrical/Electronics Insulation Conference, 1977
Spiral wrap paper covered rectangular magnet wire has been used for many years. Recent technological developments by Phelps Dodge Magnet Wire Company have provided a linear paper construction which has many advantages over spirally wrapped paper wire.
G. Daniel Hilker, James E. Bodette
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Salient points from N.R.C. insulation papers

Electrical Engineering, 1933
AUTHORS' abstracts of papers presented at the sessions of the committee on electrical insulation of the National Research Council held in Baltimore, Md., October 11 and 12, 1932, follow. Requests for additional information should be addressed to National Research Council, 29 West 39th Street, New York, N. Y.
G.L. Clark, J.N. Mrgudich
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Enhancement and mechanism of NFC doping for improved thermal–mechanical properties of insulating paper

Cellulose, 2023
Yi-Yi Zhang
exaly