Zobrazeno 1 - 10
of 24
pro vyhledávání: '"L. C. Whitman"'
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 72:267-277
The aging performance of dry-type transformer insulating systems is shown to be dependent not only on the materials used but to a large extent on the gas medium in which they are operated. This gas medium may retard or accelerate aging because of its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82134fabc412026262382a06cc650a6f
https://doi.org/10.1109/aieepas.1953.4498631
https://doi.org/10.1109/aieepas.1953.4498631
Autor:
A. L. Scheideler, L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics. 74:232-239
A method is described for determining the effect of thermal aging on the shearing modulus of flexible sheet insulations by nondestructive tests using a torsion pendulum technique. The test sample, in tape form, is simple and easily prepared. Shearing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2808074ca49519421900546e1832e3e0
https://doi.org/10.1109/tce.1955.6372278
https://doi.org/10.1109/tce.1955.6372278
Autor:
L. C. Whitman, J. E. Holcomb
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 81:1046-1053
Equations are developed for transient temperature rise of transformer cooling medium and various types of transformer coils over their ambient medium. These are evaluated on a percent temperature rise base for the corresponding powers of the watts di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3b559cca518823edfb24af3729e5bc0
https://doi.org/10.1109/aieepas.1962.4501487
https://doi.org/10.1109/aieepas.1962.4501487
Autor:
L. C. Whitman, Paul Doigan
Publikováno v:
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics. 73:193-198
Based on chemical reaction rate theory and an extension of the application of the Arrhenius equation, a method is presented for calculating insulation degradation curves. Using the initial dielectric strength (DS) and time-temperature insulation char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91e12b2d2fe1eefbec21e8e65d5b5b71
https://doi.org/10.1109/tce.1954.6372138
https://doi.org/10.1109/tce.1954.6372138
Autor:
H. C. Stewart, L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 67:1600-1607
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5db52120d9cc9c6afd9b86a2eed15aa7
https://doi.org/10.1109/t-aiee.1948.5059866
https://doi.org/10.1109/t-aiee.1948.5059866
Autor:
H. C. Stewart, L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 63:763-768
With the increasing use of dry-type transformers, attention has been focused upon the fact that the difference between the average temperature rise by resistance and the hottest-spot temperature rise is much greater than in liquid-immersed transforme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::169969b8c9db17a2540ca0be8e8cf6b1
https://doi.org/10.1109/t-aiee.1944.5058789
https://doi.org/10.1109/t-aiee.1944.5058789
Autor:
L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 76:1077-1084
This is a continuation of the previously published data on the loading of sealed dry-type transformers.1 With the same representative core and coils as were used in the previous work, and the sealed tank replaced with a louvered casing, the winding t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c037aa61df5f9109ed933ed3a9008926
https://doi.org/10.1109/aieepas.1957.4499721
https://doi.org/10.1109/aieepas.1957.4499721
Autor:
E. D. Treanor, L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 71:678-681
This contribution to the discussion of the fire risks of transformers is limited to tests on the materials which enter the apparatus and their probable behavior. Comparisons are made regarding flammability of the solid insulations, as well as the gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22441e34a8e1d59357431e4ab3f0e35c
https://doi.org/10.1109/aieepas.1952.4498527
https://doi.org/10.1109/aieepas.1952.4498527
Autor:
L. C. Whitman
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 71:377-385
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c687a2b7f9a2ee8437725681bd2447d
https://doi.org/10.1109/aieepas.1952.4498486
https://doi.org/10.1109/aieepas.1952.4498486
Autor:
L. C. Whitman, H. C. Stewart
Publikováno v:
Transactions of the American Institute of Electrical Engineers. 70:436-439
New studies have been made of the aging of Class-B insulating material in nitrogen, and it has been found that the insulations follow the same behavior rules in nitrogen as they do in air. However, the tests indicate Class-B material in nitrogen can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fabac2909371427ef8f15d8735be1f6d
https://doi.org/10.1109/t-aiee.1951.5060424
https://doi.org/10.1109/t-aiee.1951.5060424