By Topic

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480)

23-25 Sept. 2003

Filter Results

Displaying Results 1 - 25 of 124
  • Partial discharge pattern classification using frequency-domain statistical descriptors

    Publication Year: 2003, Page(s):171 - 175
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (502 KB) | HTML iconHTML

    Internal partial discharges taking place inside an insulation has been identified as one of the major contributors of the high voltage equipment failures. Recently, with the rapid development of computer based signal processing, it is possible to identify the source of partial discharge (PD) signals originating from complex insulation structures under varied operating conditions. The research on P... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Measurement and analysis of partial discharge in high voltage motor stator windings

    Publication Year: 2003, Page(s):27 - 31
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (475 KB) | HTML iconHTML

    Online partial discharge monitoring system (PDMS) was developed to assess the condition of stator winding in high voltage motors. 80 pF capacitive couplers were connected to a 6.6 kV motor stator coil terminal. The voltage applied to stator coils were at 3.81 kV, 4.76 kV and 6.6 kV, respectively. These stator coils have various types of artificial insulation defects such as large voids, semi-condu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Temperature dependence of surface breakdown on printed circuit board

    Publication Year: 2003, Page(s):167 - 170
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (333 KB) | HTML iconHTML

    In this paper, surface breakdown phenomenon of printed circuit board was investigated with increasing temperature from 23°C to 150°C, and decreasing the atmospheric pressure from 100 kPa to 1 kPa. The experiment was carried out by 30 kV DC pulse voltage with the frequencies in the range of 50 Hz to 150 Hz. Printed circuit boards of epoxy resin laminate have been employed to investigate the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of neural network to suppress PD stochastic pulse noise for large generators

    Publication Year: 2003, Page(s):21 - 25
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (346 KB) | HTML iconHTML

    In the continuous on-line partial discharge (PD) monitoring of large generators, the numerous interferences aroused during machine operation or coupled into the machine from the power system, so the noise cancellation techniques are essential to on-line PD measurement. According to the characteristics in time domain, the interferences can be divided into periodic narrow-band noise, the white noise... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Common criteria for right selection of the medium voltage circuit breakers

    Publication Year: 2003, Page(s):161 - 165
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (481 KB) | HTML iconHTML

    In the mid 1960s, two new breaker technologies, one using SF6 gas and the other Vacuum as its arc quenching medium, were introduced to the switchgear market. Experience in developing SF6 and Vacuum circuits-breakers was supported by increasingly close cooperation between the research centers. Today it can be said that they all replaced the older types of circuit breakers (Bul... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Manufacturing motors in the United States

    Publication Year: 2003, Page(s):189 - 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (281 KB) | HTML iconHTML

    More and more domestic companies are finding the cheap labor markets of the international world appealing for their manufacturing. This presents a logistics problem for some companies whose theory and culture are not designed for customer satisfaction, but by costs alone. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • How humidity affects partial discharge activity in stator windings

    Publication Year: 2003, Page(s):47 - 50
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (341 KB) | HTML iconHTML

    It has been found that PD activity may be strongly affected by humidity and/or dew using continuous on-line partial discharge (PD) monitors on operating rotating machines. This appears to be associated with specific stator winding deterioration processes such as electrical tracking and end-winding PD. Experiments have been conducted to simulate these failure processes, and to determine the effect ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using geometric dimensioning and tolerancing (GD&T) to define parts in electrical manufacture

    Publication Year: 2003, Page(s):69 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    There is a need to provide consistent engineering information available in the manufacturing process. GD&T can ensure that everyone involved in the manufacturing process knows how the electrical components are to be manufactured and inspected. This article surveys the history, need, symbology, industrial problems and some advanced topics concerning GD&T. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Acid rain aging of silicone rubber materials in a fog chamber

    Publication Year: 2003, Page(s):17 - 20
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    It is important to the power industry that insulators exhibit long life and low electrical loss in use in the field. Increased leakage current is costly as this is lost power distribution or transmission or can lead to the generation of conductive paths and the breakdown of the insulator. The purpose of this study was to investigate the influence of applied electrical stress on silicone rubber sam... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Opportunities for OEM suppliers of electrical components for fuel cell power systems

    Publication Year: 2003, Page(s):157 - 159
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (297 KB) | HTML iconHTML

    There has never been any innovative development in our history that has had the world-wide attention and the dollar investment that has been focused on development of a efficient, cost effective Fuel Cell Power Systems. Fuel cells have been public knowledge for over 150 years so why all the attention now? Governments and Industry have come to realize that we must clean up our environment if we are... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Epoxy systems for applications below zero degrees celsius

    Publication Year: 2003, Page(s):221 - 226
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (430 KB) | HTML iconHTML

    Epoxy based products are finding increased utility in a wide variety of structural and electrical applications that are required to operate in low temperature environments. This versatile polymer offers many attractive features such as high mechanical strength, outstanding dielectric characteristics, excellent adhesive properties, very good chemical resistance and excellent thermal endurance. Such... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dielectric characteristics of heat-resistant ceramic coating

    Publication Year: 2003, Page(s):473 - 475
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (269 KB) | HTML iconHTML

    We have investigated the electric properties of ceramic coating film consisting mainly of SiO2, Al2O3, and TiO2. The ceramic film on a steel plate was found to exhibit excellent adhesive stability upon heating at approximately 1000°C. In particular, film calcined in N2 showed the higher electric resistance and lower dielectric loss factor.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Advantages of polyimide corona resistant film under high frequency testing

    Publication Year: 2003, Page(s):627 - 631
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (358 KB) | HTML iconHTML

    Film or enamel wire insulation has many stresses to endure in end-use applications, some perform better then others under high frequency pulse power waveforms. This paper details comparison on round copper wire insulated with three types of insulation: enamel, inverter duty enamel and corona resistant film. Temperature classes of the wire under test were between 180-240°C. Results were on mech... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Manufacturing motors in the United States

    Publication Year: 2003, Page(s):185 - 188
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (287 KB) | HTML iconHTML

    Baldor Electric Company is committed to manufacturing motors and generators in United States. We believe this is in the best interest of customers, stockholders and employees. This makes selecting the correct machine options for each phase of electric motor manufacturing critically important. That is why cycle time of a product is critical for productivity at the most reasonable cost. We are also ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Partial discharge weak spots localization in the stator insulation of running turbo generators

    Publication Year: 2003, Page(s):43 - 46
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (389 KB) | HTML iconHTML

    One of the best symptoms for the presence of defects in the HV insulation system is the detection of partial discharges (PD). Weak spots may be found by evaluating the PD repetition rate over the entire insulation system. If a severe degradation system is active, it will show a much higher PD repetition rate compared to the non-affected part of the insulation system. A method is introduced, which ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • In-slot stator winding of DC brushless motors

    Publication Year: 2003, Page(s):89 - 92
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (326 KB) | HTML iconHTML

    This paper is intended to review and discuss the current state of technology for in-slot DC motor winding. This paper focuses on the multiple methodology and technology for the in-slot stator winding of DC brushless motors. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • NEMA 6-MW Magnet Wire Technical Committee chairman's report-2003

    Publication Year: 2003, Page(s):267 - 270
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    This chairman's report highlights the key activities of the NEMA 6-MW Magnet Wire Technical Committee since the past technical paper presentations at the 1999 Electrical Insulation Conference. This report covers the changes in the format of the NEMA MW 1000-2003 Standard, dimension tables, and wire testing procedures. This paper also reports on current and planned activities to further improve tes... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2003 report on developments in NEMA magnet wire dimensional and dielectric standards

    Publication Year: 2003, Page(s):249 - 253
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (453 KB) | HTML iconHTML

    During the past few years there has been a considerable amount of activity related to developing mathematical definitions of, and improving NEMA dimensional standards for round magnet wire products. Coincident with that development there was also a need to establish meaningful dielectric values for the new or revised dimensional standards. All of the dimension and dielectric test values changes di... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fuel cells: the epidemic of the future

    Publication Year: 2003, Page(s):505 - 510
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (459 KB) | HTML iconHTML

    The purpose of this paper is to introduce to the reader the well-publicized, but vaguely-understood concept of the fuel cell. At the present time, fuel cells are in research and are constantly being improved for better performance and application purposes. Not only will this paper introduce the concept of a fuel cell, but it will also look at the working of a basic fuel cell, different types of fu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Starting a reliability program: a case study

    Publication Year: 2003, Page(s):327 - 332
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    In small to mid-size manufacturing companies, it is possible, desirable and required to upgrade every Total Quality Management, ISO 9001 and/or Six Sigma program with a product reliability test program. In many companies, individual units are randomly tested for some finite number of hours or cycles. Corrective actions are haphazard, often ineffective. Worse yet, they may never be implemented; wit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bondable magnet wire - cost justification

    Publication Year: 2003, Page(s):571 - 574
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    Bondable magnet wires have been used for years in certain specialized applications such as television deflection yoke coils and bobbinless coils for solenoids and inductors. With the development of bondable magnet wire that retains bond strength at temperatures exceeding 155°C. It is now possible to use the physical and electrical properties of a bonded wire system to replace conventional varn... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling cables, cords, and coils for electric component assembly

    Publication Year: 2003, Page(s):65 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (481 KB) | HTML iconHTML

    This paper will focus on the inclusion of representations of the cables, cords, and coils that make up electrical component assemblies. Some short historical approaches will be presented, followed by a discussion of what new solid modeling technology is having on the process. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impulse withstand voltage characteristics of polluted insulation material surfaces under humid conditions

    Publication Year: 2003, Page(s):13 - 16
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    Recent research is indicating, that the impulse withstand voltage characteristics of insulation material surfaces are influenced by the relative humidity in a greatly differing extent. This influence mainly depends on the physical and chemical surface structure of insulation materials. In order to describe the impulse withstand voltage characteristics under humid conditions a test procedure called... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stator winding replacement based on overpotential testing

    Publication Year: 2003, Page(s):439 - 442
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (270 KB) | HTML iconHTML

    This paper provides examples for the application of AC overpotential testing to provide information for condition based stator maintenance or rewinding of large high voltage generators. This testing program has been a successful part of an asset management approach applied by AEP engineering to large machines for the past 10 years. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fuel cell commercialization: hydrogen infrastructure economic and technical barriers

    Publication Year: 2003, Page(s):149 - 155
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (511 KB) | HTML iconHTML

    Fuel cells have the potential to provide a significant shift in global politics as the United States shift to a hydrogen-fueled economy and alter its dependency on foreign petroleum. Fuel cells, however, despite their potential to provide US energy security and providing a key technology against global warming, must overcome several economic and technical barriers, one of which is the development ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.