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IEEE Electrical Insulation Magazine

Issue 5 • September-October 2011

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  • Table of contents

    Publication Year: 2011, Page(s): 1
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  • IEEE Electrical Insulation Magazine - staff

    Publication Year: 2011, Page(s): 2
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  • Editorial

    Publication Year: 2011, Page(s): 3
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  • From the editors' desk

    Publication Year: 2011, Page(s):4 - 5
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  • Further studies of a vegetable-oil-filled power transformer

    Publication Year: 2011, Page(s):6 - 13
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1060 KB) | HTML iconHTML

    In this paper, data obtained from a transformer fitted with an online monitoring system, and using FR3 vegetable oil, were presented. The concentration of water dissolved in the oil was initially around 15 ppm, increased to 25 ppm, and then decreased to 15 ppm over a period of two years. These levels are higher than the levels expected in mineral oil because of the higher hygroscopy of vegetable o... View full abstract»

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  • Load-cycling test of high-voltage cables and accessories

    Publication Year: 2011, Page(s):14 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2913 KB) | HTML iconHTML

    The article compares load-cycling test methods in IEEE, IEC, ICEA, and AEIC standards and explains some of the practical concerns of running the test, in particular the measurement of temperature. A post test diagnostic is suggested. View full abstract»

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  • Comparison of dissolved gas-in-oil analysis methods using a dissolved gas-in-oil standard

    Publication Year: 2011, Page(s):29 - 35
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1210 KB) | HTML iconHTML

    Dissolved gas analysis (DGA) is routinely used to determine the concentrations of gases dissolved in the insulating oil of transformers. These concentrations are used to investigate and diagnose electrical or thermal faults [1]. Such faults cause the transformer oil, pressboard, and other insulating materials to de compose and generate gases, some of which dissolve in the oil. The results of DGA m... View full abstract»

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  • A survey of aging characteristics of cellulose insulation in natural ester and mineral oil

    Publication Year: 2011, Page(s):36 - 48
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2428 KB) | HTML iconHTML

    The article makes a case for allowing higher temperatures in transformers filled with natural ester fluids. This article will first provide a review of data from aging studies performed on cellulose (both Kraft paper and pressboard) impregnated separately in mineral oil and BIOTEMP (ABB, USA), a high oleic sunflower based fluid. Next, possible mechanisms that explain the differences in aging behav... View full abstract»

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  • DEIS news

    Publication Year: 2011, Page(s):49 - 53
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  • The pipeline runs dry (2011 Golden Omega Award acceptance speech)

    Publication Year: 2011, Page(s):54 - 57
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  • 2010 International Conference on High Voltage Engineering and Application

    Publication Year: 2011, Page(s):58 - 59
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  • First DEIS student essay competition

    Publication Year: 2011, Page(s):60 - 61
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  • High-speed electret charging using vacuum UV photoionization [Reprint]

    Publication Year: 2011, Page(s):62 - 64
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    In this letter, we propose a high-speed charging method using vacuum ultraviolet (vuv) irradiation, which can increase the charging rate by two orders of magnitudes than corona/soft-x-ray charging methods. So far, vuv has been used for neutralization of electrostatic charge in semiconductor process. However, the large ion current obtained with the VUV irradiation has never been used for charging e... View full abstract»

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  • Development of low-wind-load overhead transmission wires [News from Japan]

    Publication Year: 2011, Page(s):65 - 66
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  • Book reviews [7 books reviewed]

    Publication Year: 2011, Page(s):67 - 70
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  • IEEE media advertising sales offices

    Publication Year: 2011, Page(s): 71
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  • Meetings calendar

    Publication Year: 2011, Page(s): 72
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  • IEEE Electrical Insulation Magazine - Front cover

    Publication Year: 2011, Page(s): c1
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  • Author's guide

    Publication Year: 2011, Page(s): c2
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  • 2012 IEEE International Power Modulator and High Voltage Conference

    Publication Year: 2011, Page(s): c4
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Aims & Scope

The EI Magazine publishes articles written by authors from industry, research institutes and academia. The articles are more practical in content than the papers published in the Transactions.

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Meet Our Editors

Co-Editor-in-Chief
Edward Cherney

Co-Editor-in-Chief
Robert Fleming