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Electrical Insulation Magazine, IEEE

Issue 5 • Date Sept.-Oct. 2003

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Displaying Results 1 - 19 of 19
  • From the Editor's desk

    Page(s): 4
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    Freely Available from IEEE
  • Dielectric spectroscopy in time and frequency domain for HV power equipment. I. Theoretical considerations

    Page(s): 5 - 19
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (9962 KB) |  | HTML iconHTML  

    Most dangerous breakdowns are caused by the aging effects of HV insulation systems used within HV components, and there is still a lack of appropriate tools to diagnose such systems non-destructively and reliably in the field. This review introduces the theoretical background of dielectric spectroscopy in the time and frequency domains and provides an overview about the specific measuring methods based on this background. The specific methods treated are used for diagnosing electric insulation materials used in power engineering. It indicates that some of these methods may not be sufficient to gain full information about the actual conditions of a test object and that either measurements of polarization and depolarization currents (PDC in the time domain or measurements of C-tanδ values (or complex permittivity) in the frequency domain (FDS) should be preferred to obtain a "dielectric response function" which offers much more information to judge the actual state of an insulation material or system. View full abstract»

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  • The application of matched filters to PD detection and localization

    Page(s): 20 - 26
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (8019 KB) |  | HTML iconHTML  

    In practice, partial discharge (PD) signals are corrupted mainly by narrowband noise caused by radio communications. Matched filters are very well suited for PD detection in the presence of such noise, since they exploit spectral regions with high SNR to maximize the SNR of a measured PD signal. In addition to its noise suppressing capabilities, a matched filter provides a means to estimate accurately PD pulse magnitude and arrival time. Consequently, PD detection can benefit greatly from the application of matched filters. However, good knowledge of the signal waveform is required. In many cases, such information can be obtained by measurement or modeling of the PD pulse propagation. View full abstract»

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  • Development of sequential build-up multilayer printed wiring boards in Japan

    Page(s): 27 - 56
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1297 KB) |  | HTML iconHTML  

    Printed Wiring Boards (PWB) made by Sequential Build-Up (SBU) processes have found a wide application in semiconductor packaging substrates and system in package substrates, besides usage as a conventional printed wiring board. Its capability for high density circuits can contain multi-functional electronic circuits within a small surface area and can achieve light weight and low-profile products with improved electric characteristics. A number of processes and materials were developed and are used for each application in each electronic product. The advancement of printed wiring boards is expected to continue, driven by the requirements from electronic products. Technical development activities are needed to satisfy these requirements. Activities are still high in the development of embedded passive technology, which will equip printed wiring boards with the functions of passive components resistance (R), capacitance (C) and inductance (L) - as well as the conventional interconnection functions of conductors between components. This technology will dramatically change the structure of printed wiring boards and complicate the fabrication processes. Material development will be a key issue in the case of embedded resistors and capacitors. View full abstract»

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  • EIC profile - Featuring member companies of the eic

    Page(s): 58 - 59
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  • DEIS news

    Page(s): 60 - 65
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  • EIC news

    Page(s): 66 - 69
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  • News from Japan

    Page(s): 67 - 69
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  • NEMA news

    Page(s): 70 - 71
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  • The Complete Equipment Leasing Handbook [Book Review]

    Page(s): 72
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  • Speed to Market: Lean Manufacturing for Job Shops, 2nd Ed. [Book Review]

    Page(s): 72
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  • The RF Transmission Systems Handbook [Book Review]

    Page(s): 72 - 73
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  • Fundamentals and Applications of Microfluidics [Book Review]

    Page(s): 73
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  • Hacking Exposed-Network Security Secrets & Solutions, 4th Ed. [Book Review]

    Page(s): 73 - 74
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  • Molecular Imprinting-From Fundamentals to Applications [Book Review]

    Page(s): 74
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  • Electrician's Instant Answers [Book Review]

    Page(s): 74
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  • Management Stripped Bare-Understanding Business As It Really Is [Book Review]

    Page(s): 74 - 75
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  • Power Transformers-Principles and Applications [Book Review]

    Page(s): 75
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  • Industry news

    Page(s): 77 - 78
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Aims & Scope

The EI Magazine is specifically concerned with publishing articles in the development and characterization of the dielectric, chemical, mechanical, and environmental properties of all vacuum, gaseous, liquid, and solid electrical insulation, and with utilization of these materials in circuits and systems under conditions of use.

Full Aims & Scope

Meet Our Editors

Co-Editor-in-Chief
Edward Cherney

Co-Editor-in-Chief
Robert Fleming