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Proceedings of Electrical/Electronics Insulation Conference

4-7 Oct. 1993

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Displaying Results 1 - 25 of 127
  • Proceedings of Electrical/Electronics Insulation Conference

    Publication Year: 1993
    Request permission for commercial reuse | PDF file iconPDF (486 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1993, Page(s): xvi
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    Freely Available from IEEE
  • High temperature operating capabilities of silicone transformer fluid

    Publication Year: 1993, Page(s):297 - 301
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Silicone fluids appear to be well-suited to applications in higher temperature rise transformer designs; smaller, lighter-weight transformer designs; and transformers which could operate above rated capacity periodically without significant loss of insulation life. This would require a selection process to match the proper combination of insulating fluid and other insulation system components to a... View full abstract»

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  • Evaluation of a carbonized foam electrode for DC high voltage continuity testing of magnet wire

    Publication Year: 1993, Page(s):147 - 151
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    A pair of electrically conductive carbonized foam pads can be used as the magnet wire contact electrode for direct current, high voltage continuity testing. The effects of different electrode configurations on DC HVC results of a magnet wire sample from each of the various size ranges are investigated. The variables critical to the carbonized foam electrode performance are under study for presenta... View full abstract»

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  • Alnico permanent magnets an overview

    Publication Year: 1993, Page(s):373 - 383
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    An enumeration and discussion of the physical, thermal, mechanical and magnetic problems of Alnico permanent magnet materials are presented. Some of the milestones in the development of this class of alloys are shown. The physical properties of cast and sintered Alnico permanent magnets are presented, together with the magnetization losses on heating above room temperature, and the magnetization c... View full abstract»

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  • Computer design of AC and DC inductors

    Publication Year: 1993, Page(s):707 - 712
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    The design of AC and DC inductors is discussed. There are three types of inductor designs covered, i.e., those with only AC voltage applied; those with a small AC voltage and a large superimposed DC current; and those with significant AC voltage and DC current. While the same fundamental theory applies for all designs, each design approach is considered separately. The design procedure for each ty... View full abstract»

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  • Voltage endurance test facility for electric generator stator coils

    Publication Year: 1993, Page(s):557 - 561
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The development of new coil designs with the use of updated materials and/or processes requires voltage endurance testing as one of the tests to verify the new coil design. From established voltage endurance curves, a new insulation system can be evaluated against accepted coil designs. An expanded voltage endurance test lab has been developed which has the capabilities for testing both coil secti... View full abstract»

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  • New UL classification for silicone transformer fluid

    Publication Year: 1993, Page(s):291 - 295
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    The protocol, apparatus, and results of high power testing recently performed on a silicone transformer fluid to gain the "Less Flammable per NEC 450-23" classification from Underwriters Laboratories are described. Also covered are the "use restrictions" associated with the listing, and the implications for both original equipment manufacturers (OEMs) and transformer specifiers. A review of Nation... View full abstract»

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  • Advantages of corrugated transformer insulation

    Publication Year: 1993, Page(s):525 - 527
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    New transformer materials continue to be developed and tested for various temperature ranges and operating conditions. Several sinusoidal corrugated sizes are now also available, as well as many special combinations to satisfy specific transformer insulation and strength design requirements. Small sizes of square and rectangular NOMEX are available to keep primary and secondary winding closely int... View full abstract»

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  • Frequency characteristics of ferrite core inductors

    Publication Year: 1993, Page(s):369 - 372
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    An equivalent model of inductors at high frequencies is developed taking into account equivalent series resistance (ESR) and the parallel equivalent resonant capacitance. An expression representing the equivalent inductance (Ls) of an inductor is derived. It is shown that an inductor behaves like a capacitor beyond its resonant frequency. Various parameters such as inductance, capacitan... View full abstract»

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  • Multi-pole magnetization of high resolution magnetic encoder

    Publication Year: 1993, Page(s):237 - 242
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The construction of the magnetic encoder with a magnetoresistance sensor and a multi-pole magnetic drum is described. A rotatory magnetization system has been developed to magnetize the magnetic encoder. It is found that the sine-PWM magnetization is superior over the single-pulse magnetization when high resolution is needed View full abstract»

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  • Study on life estimation of cable insulation by gas evolution and oxygen consumption during radiation and thermal aging

    Publication Year: 1993, Page(s):703 - 706
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    Ethylene-propylene rubber (EP rubber), as cable insulating material used in Japanese domestic nuclear power plants, is exposed to γ-rays, and aged in an oxygen atmosphere. Oxygen consumption and CO2 evolution during γ-radiation and thermal aging are measured by gas chromatography. Elongation at the break of aged EP rubber is found to be related to oxygen consumption and CO View full abstract»

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  • One multi-location network's approach to environmental stewardship in the 1990s

    Publication Year: 1993, Page(s):109 - 113
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    GE Apparatus Service (ASD) operates a network of service centers. These centers perform maintenance, repair, and upgrading of power generation, power delivery and power utilization apparatus. The process used by Apparatus Service to achieve VOC (volatile organic compound) emissions at a level below current and anticipated regulatory demands is described View full abstract»

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  • Transformer design using Windows

    Publication Year: 1993, Page(s):57 - 63
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    A number of software packages exist to help a programmer make the transition to the Windows environment. The programs are used to develop subprograms of "scripts" that instruct the Windows application to perform certain functions when a button is pushed or a field is entered. Illustrative examples are provided View full abstract»

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  • Fundamental process and test considerations in room cure trickle

    Publication Year: 1993, Page(s):439 - 442
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    An attempt is made to relay some of the misinterpretation concerning the room cure trickle process, as well as to discuss the theories behind why this process is different than the conventional heat cure trickle method. In particular, the information sorts out the facts and fiction relating to material handling, part handling and the over-all process as is compares to traditional heat core methods View full abstract»

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  • Verification of insulation temperature class through weight loss measurements

    Publication Year: 1993, Page(s):553 - 556
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A simple accelerated thermal aging test is applied to verify the temperature index range of replacement insulation systems for rewinding stators of large rotating machines. The measurement of insulation weight loss at elevated temperatures and noting the progression of constituent deterioration provides valuable information for matching the variety of systems available to expected operating condit... View full abstract»

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  • Tools for commutator turning

    Publication Year: 1993, Page(s):85 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The evolution of both natural and synthetic diamond tooling over the past forty years is discussed. Basic design factors are addressed. Fabrication techniques are reported View full abstract»

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  • Noise problems of appliance drain pumps

    Publication Year: 1993, Page(s):45 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The drain pump is one of the significant noise sources of washing machine and dishwasher appliances. The pump can generate vibrations, particularly when operated under load. This vibrational energy is converted into radiated sound energy through the large surface of the chassis, kickplate and sidewalls of the cabinet. Structure-borne noise of the pumps is dominant around 100 Hz. The pulsating suct... View full abstract»

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  • Advanced methods of motor testing

    Publication Year: 1993, Page(s):287 - 290
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    The increasing use of statistical process control requires new tasks of quality assurance. 100% final testing and diagnosis of the motors with regard to all electrical, mechanical and vibro-acoustic characteristics is mandatory for real process control to be applied. To achieve this task an intelligent motor test system is required. Essential parts of this system consist of the following: paramete... View full abstract»

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  • Comparison of mechanical strengths of three materials used as pressure plates in oil-filled transformers

    Publication Year: 1993, Page(s):519 - 523
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    A comparison of the physical properties of three varieties of material used as pressure rings to clamp and hold the coils of core-form oil filled transformers is given. The data is presented to serve as a guide in the selection of materials for pressure ring applications. The materials studied are polyester bonded high density pressboard, epoxy bonded electrical steel and epoxy bonded filament gla... View full abstract»

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  • Customer's voice in commutator engineering

    Publication Year: 1993, Page(s):425 - 433
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Examples of advanced commutator design, a discipline-based upon the shared experience of both the motor manufacturer and the commutator supplier are presented. The purpose is not only to illustrate solutions to the numerous engineering challenges that exist, but to demonstrate that a successful quality system must be prepared to listen to and be guided by customer requirements. To fulfill the requ... View full abstract»

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  • New trends in stator testing

    Publication Year: 1993, Page(s):33 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    The purpose of stator testing, the history of stator testing and contemporary evolution in stator testing are discussed. Specific topics include fast set-up and recall, and test data versus go/no go View full abstract»

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  • Cause and effect analysis: "Power tool" for total quality

    Publication Year: 1993, Page(s):751 - 753
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    The cause and effect diagram is a power tool of a total quality process (TQM) because it supports actions and principles vital to the successful implementation of total quality. The cause and effect diagram supports total quality in the following ways: it fosters efficient total involvement of associates; it prevents problems from recurring; it creates continuous improvement; it is a fundamental a... View full abstract»

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  • The effect of interfacial interaction on charge storage in clay filled LDPE

    Publication Year: 1993, Page(s):697 - 701
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The dielectric properties of low-density polyethylene (LPDE) filled with aluminum silicate clay fillers are studied by thermally stimulated currents and time domain dielectric spectroscopy. The change of the charge storage behavior and related dielectric responses due to the polymer-filler interactions is investigated by analyzing the effect of the particle sizes of the fillers and that of surface... View full abstract»

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  • Establishing balance tolerances for armatures

    Publication Year: 1993, Page(s):619 - 626
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Within the context of a study of balance problems in a motor, the authors discuss the establishment of realistic tolerances, static and dynamic balance, the causes of motor unbalance process control, and effective balancing. Formulae for the maximum unbalance are provided View full abstract»

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