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IEEE Industry Applications Magazine

Issue 3 • May-June 1996

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Displaying Results 1 - 9 of 9
  • Worldwide reliability survey of high-voltage circuit breakers

    Publication Year: 1996, Page(s):65 - 66
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB)

    CIGRE 13.06 Working Group has conducted two worldwide reliability surveys of the reliability of high-voltage circuit breakers of 63 kV and above. The first enquiry included 78000 breaker-years of "in-service data" from 102 companies in 22 countries during the years 1974 through 1977 and included all interrupting technologies. The second enquiry included 70708 breaker-years from 132 companies in 22... View full abstract»

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  • Practical considerations of area classification: how for to classify

    Publication Year: 1996, Page(s):15 - 19
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1512 KB)

    Defining the classification of a location or facility (class, group, and division), while often a difficult and time-consuming task, is only the first of three separate and distinct tasks that must be performed by those who provide electrical area classification. This first task defines the kinds of materials that are present in the location using the terms class, group, and division. The second t... View full abstract»

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  • Hibernia: the next generation of offshore platform control systems

    Publication Year: 1996, Page(s):6 - 14
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2440 KB)

    CIE-computer-integrated enterprise-technically best describes the Hibernia's new Grand Banks, Newfoundland, offshore drilling and production platform. Designed and constructed in an era of oil company belt-tightening, Hibernia takes advantage of modern technology to achieve the goal of a safe, cost-effective control system design. Some of the design criteria used in the control system design are d... View full abstract»

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  • Safety practices in electrolytic cell line working zones: 1994 changes

    Publication Year: 1996, Page(s):51 - 54
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB)

    In 1974 the Electrical Cell Line Working Group of the Chemical Industry Committee prepared a trial-use standard for Electrical Safety Practices in Electrolytic Cell Line Working Zones. Comments on the trial-use standard were incorporated into a full-status standard and published as IEEE Std 463-1977, IEEE Standard for Electrical Safety Practices in Electrolytic Cell Line Working Zones. IEEE Std 46... View full abstract»

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  • Capacitor overcurrent protection for industrial distribution systems

    Publication Year: 1996, Page(s):20 - 27
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2000 KB)

    Many industrial facilities apply power factor correction capacitors to enhance their electrical system efficiency. Power factor improvement, power loss reduction, release of system capacity, and voltage improvement can all be achieved by applying capacitors in industrial plants. Protection of these capacitor banks against excessive overcurrents is a critical part of the safe and reliable operation... View full abstract»

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  • Fast tripping of utility breakers and industrial load interruptions

    Publication Year: 1996, Page(s):55 - 64
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2304 KB)

    Some industries are very sensitive to electric power interruptions and voltage sags, which are a normal consequence of the utility fault-clearing process. Typically, US utilities will try once or twice to clear faults without blowing any tap fuses, which would require dispatching a trouble crew to replace. To reduce complaints and to improve power quality for critical customers with high economic ... View full abstract»

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  • The universal overcurrent relay

    Publication Year: 1996, Page(s):28 - 34
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1868 KB)

    A comprehensive list of nondirectional overcurrent relays would include thermal overload, inverse-time, definite time, and instantaneous relays. The list could be further classified by operating quantities including individual phase, residual, and negative-sequence current. Taken collectively and depending on the characteristic shape, pickup and time range, and dynamics, these relays span the appl... View full abstract»

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  • Report on enclosure internal arcing tests

    Publication Year: 1996, Page(s):35 - 42
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1752 KB)

    The improvement of electrical equipment is an ongoing process including investigative research. This is a report on research work concerning factors regarding high-energy arcing faults, the tests conducted on containment of these faults, and standards addressing arcing fault test requirements. This report is focused on low-voltage, 600 V class motor control centers (MCCs), but the issues presented... View full abstract»

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  • High-speed, variable-speed drive system in megawatt power range

    Publication Year: 1996, Page(s):43 - 50
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1732 KB)

    In this article we present an industrial application of a high-speed, high-power, variable-speed drive system with a rated power of 2300 kW at 15600 RPM. The drive is based upon economical and reliable components such as thyristor-controlled current source inverters and the rugged and maintenance-free squirrel cage induction machine. We could take advantage of many synergies with the standard load... View full abstract»

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IEEE Industry Applications Magazine publishes articles concerning technical subjects and professional activities that are within the Scope of the IEEE Industry Applications Society (IAS) and are of interest to society members

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Editor-in-Chief
H. Landis "Lanny" Floyd
 

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