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IEEE Electrical Insulation Magazine

Issue 3 • May-June 2012

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Displaying Results 1 - 15 of 15
  • IEEE Electrical Insulation Magazine - TOC

    Publication Year: 2012, Page(s):1 - 2
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  • IEEE Electrical Insulation Magazine

    Publication Year: 2012, Page(s): 3
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  • Editorial

    Publication Year: 2012, Page(s): 4
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  • From the editors' desk

    Publication Year: 2012, Page(s):5 - 7
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  • Effects of terminal connections on sweep frequency response analysis of transformers

    Publication Year: 2012, Page(s):8 - 13
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2080 KB) | HTML iconHTML

    Many problems can arise in power transformers, beginning from the moment they arrive at the sites where they are to be installed [1], [2]. Sweep frequency response analysis (SFRA) is used by many industries and manufacturers to assess the mechanical integrity of the core, winding, and clamping structure of power transformers. It usually involves the application of low-voltage (LV) signal (2 to 15 ... View full abstract»

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  • Research on space charge in insulating and functional dielectrics at Tongji University

    Publication Year: 2012, Page(s):14 - 25
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2614 KB) | HTML iconHTML

    Space charge can greatly influence the electrical properties of insulating dielectrics. Our understanding of space charge, and our ability to control its accumulation in dielectrics, progressed slowly for many years, until reliable methods of measuring space charge profiles were developed. Nowadays, the injection of a packet-like space charge into a dielectric can be followed, and control of space... View full abstract»

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  • Effects of test cable ground extensions on repeatability of frequency response analysis measurements on power transformers

    Publication Year: 2012, Page(s):26 - 31
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1489 KB) | HTML iconHTML

    Power transformers are critical and expensive components of power networks, especially large power transformers. Assessment of their condition and diagnosis of faults involves several tests. One of the most important aspects of transformer assessment is the detection of mechanical displacements or deformations of transformer windings that might have occurred, e.g., during short-circuit events in t... View full abstract»

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  • A field study of two online dry-out methods for power transformers

    Publication Year: 2012, Page(s):32 - 39
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1572 KB) | HTML iconHTML

    Dry-out methods for transformers, using cellulose cartridges and molecular sieves, were compared. The latter are preferable for keeping a dry transformer dry, whereas the former are more efficient in drying a wet transformer. In this article, we compare the effectiveness of the cellulose cartridge filter and molecular sieve methods. Two identical transformers with similar insulation wetness were u... View full abstract»

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  • Comparison of the dielectric strength of transformer oil under DC and repetitive multimillisecond pulses

    Publication Year: 2012, Page(s):40 - 49
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2930 KB) | HTML iconHTML

    The dielectric strength of fresh and contaminated transformer oil under repetitive millisecond pulses was compared with that at DC voltage. The pulsed breakdown voltage was found to be higher than its DC counterpart by 10 to 20%. View full abstract»

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  • Development of a multifunctional electric power storage device [News from Japan]

    Publication Year: 2012, Page(s):50 - 51
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  • Book Reviews [ 7 books reviews]

    Publication Year: 2012, Page(s):52 - 56
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  • IEEE media advertising sales offices

    Publication Year: 2012, Page(s): 57
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  • Meetings calendar

    Publication Year: 2012, Page(s): 58
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  • IEEE Electrical Insulation Magazine - Front cover

    Publication Year: 2012, Page(s): c1
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  • Author's guide

    Publication Year: 2012, Page(s): c3
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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