Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162605
M. Epstein
Summary form only given, as follows. The coming decade is expected to be a period of extensive advances in technology. This will have a profound impact on society as a whole but, in particular, on the electrical and electronics industries. The author provides an overview of some of the more interesting developments likely to reach the marketplace in some form before the end of the decade. Global subjects such as high-speed rail will be addressed along with more specialized subjects such as liquid crystal polymers and ferroelectrics.<>
{"title":"New technology for the 21st century","authors":"M. Epstein","doi":"10.1109/EEIC.1991.162605","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162605","url":null,"abstract":"Summary form only given, as follows. The coming decade is expected to be a period of extensive advances in technology. This will have a profound impact on society as a whole but, in particular, on the electrical and electronics industries. The author provides an overview of some of the more interesting developments likely to reach the marketplace in some form before the end of the decade. Global subjects such as high-speed rail will be addressed along with more specialized subjects such as liquid crystal polymers and ferroelectrics.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123815434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162601
B. Robeson
The author points out why minimizing core losses is important to users of rewound motors. It is indicated that core testing is important because it leads to better customer service and can reduce a repair shop's warranty costs. Core permeability describes the relative ability of the motor core to support a strong magnetic field. Any reduction in core permeability means that more power will be required to produce the original magnetic field strength. This will cause the motor to draw higher no-load current, while negatively effecting both efficiency and power factor. The author seeks to create an awareness of the two most common core testing techniques and motivate the reader to learn more about more core testing.<>
{"title":"Core loss testing-essential for the 1990s","authors":"B. Robeson","doi":"10.1109/EEIC.1991.162601","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162601","url":null,"abstract":"The author points out why minimizing core losses is important to users of rewound motors. It is indicated that core testing is important because it leads to better customer service and can reduce a repair shop's warranty costs. Core permeability describes the relative ability of the motor core to support a strong magnetic field. Any reduction in core permeability means that more power will be required to produce the original magnetic field strength. This will cause the motor to draw higher no-load current, while negatively effecting both efficiency and power factor. The author seeks to create an awareness of the two most common core testing techniques and motivate the reader to learn more about more core testing.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131396852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162567
P. Reynolds, B. Ward
In recent years conventional DC testing of installed insulation has begun to lose favor. The authors present a novel technique that overcomes all previous objections to DC testing and many of the disadvantages, such as size and weight, of the already identified alternatives. The power supply, called a pulsed resonant power supply, produces line frequency output with no DC content. There is no switching involved; hence the supply is readily adaptable for partial discharge and power factor measurements. With its many attributes, the pulsed resonant power supply is well suited for maintenance testing of large rotating machines.<>
{"title":"An alternative to DC test equipment for performing off-line diagnostic testing on large rotating machines","authors":"P. Reynolds, B. Ward","doi":"10.1109/EEIC.1991.162567","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162567","url":null,"abstract":"In recent years conventional DC testing of installed insulation has begun to lose favor. The authors present a novel technique that overcomes all previous objections to DC testing and many of the disadvantages, such as size and weight, of the already identified alternatives. The power supply, called a pulsed resonant power supply, produces line frequency output with no DC content. There is no switching involved; hence the supply is readily adaptable for partial discharge and power factor measurements. With its many attributes, the pulsed resonant power supply is well suited for maintenance testing of large rotating machines.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134180274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162576
P.J. Walitsky
It is projected that costs related to the Clean Air Act will increase in the short run as industry pushes for substitutions and begins applying control technology. However, competition in the pollution control industry and the development of novel techniques and process methods will contribute to making the control of air pollution feasible and economical. The electronics industry will be affected directly by many of the titles. These titles will affect what materials are used and how they are used. They establish a nationwide industry-specific system for emission of hazardous air pollutants. They phase out production of various solvents which have long been a mainstay of the electrical and electronics industries. It is concluded that the long-range effect of the Clean Air Act Amendments of 1990 should be cleaner air, cleaner cars, cleaner power plants, cleaner factories, and cleaner fuels.<>
{"title":"The effect of the Clean Air Act on the electrical/electronics industry","authors":"P.J. Walitsky","doi":"10.1109/EEIC.1991.162576","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162576","url":null,"abstract":"It is projected that costs related to the Clean Air Act will increase in the short run as industry pushes for substitutions and begins applying control technology. However, competition in the pollution control industry and the development of novel techniques and process methods will contribute to making the control of air pollution feasible and economical. The electronics industry will be affected directly by many of the titles. These titles will affect what materials are used and how they are used. They establish a nationwide industry-specific system for emission of hazardous air pollutants. They phase out production of various solvents which have long been a mainstay of the electrical and electronics industries. It is concluded that the long-range effect of the Clean Air Act Amendments of 1990 should be cleaner air, cleaner cars, cleaner power plants, cleaner factories, and cleaner fuels.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115348007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162582
N. Hanssen
The author describes several test methods which may be used to evaluate powdered epoxy resins for their potential use as integral insulation on fractional horsepower motor iron. These are the edge coverage test method, the hot plate gel time test method, the glass pellet flow test method, and the steel panel impact test method. These test methods may be of value in establishing incoming quality control specifications, thus assuring that the epoxy resin manufacturer is supplying a product which is in compliance with the requirements specified by the motor manufacturer. Some of these tests may be used in motor production to ensure the epoxy is obtaining proper cure, that powder which meets minimum edge coverage requirements is being applied, or that the substrate being coated is free from contamination.<>
{"title":"Powdered epoxy resin test methods","authors":"N. Hanssen","doi":"10.1109/EEIC.1991.162582","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162582","url":null,"abstract":"The author describes several test methods which may be used to evaluate powdered epoxy resins for their potential use as integral insulation on fractional horsepower motor iron. These are the edge coverage test method, the hot plate gel time test method, the glass pellet flow test method, and the steel panel impact test method. These test methods may be of value in establishing incoming quality control specifications, thus assuring that the epoxy resin manufacturer is supplying a product which is in compliance with the requirements specified by the motor manufacturer. Some of these tests may be used in motor production to ensure the epoxy is obtaining proper cure, that powder which meets minimum edge coverage requirements is being applied, or that the substrate being coated is free from contamination.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115303702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162590
K. Mathes
The history of electrical insulation from its origins to the present is briefly reviewed. In the 1800s the development of electrical apparatus made necessary the use of a variety of insulating materials to meet increasingly demanding needs. Up to about 1925 only naturally occurring products such as asphalt, rubber, mica, and cotton thread or fabric were generally used. When a plethora of synthetic insulating materials became available, both their use and the means for evaluating them became complex. Attention is given to examples of failures, with reference to cryogenics. sodium conductors, URD polyethylene cable, outdoor plastic insulators, and generator stator insulation.<>
{"title":"A brief history of development in electrical insulation","authors":"K. Mathes","doi":"10.1109/EEIC.1991.162590","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162590","url":null,"abstract":"The history of electrical insulation from its origins to the present is briefly reviewed. In the 1800s the development of electrical apparatus made necessary the use of a variety of insulating materials to meet increasingly demanding needs. Up to about 1925 only naturally occurring products such as asphalt, rubber, mica, and cotton thread or fabric were generally used. When a plethora of synthetic insulating materials became available, both their use and the means for evaluating them became complex. Attention is given to examples of failures, with reference to cryogenics. sodium conductors, URD polyethylene cable, outdoor plastic insulators, and generator stator insulation.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115425272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162612
G. K. Mais
Casting and quality parameters which are directly related to the vacuum casting equipment are discussed. These include the degassing degree of the cast resin constituents, the casting mode and speed, the pre-evacuation time and vacuum before casting, and the viscosity and temperature of the cast resin compound. Casting and quality parameters that are not directly related to the vacuum casting equipment are also examined.<>
{"title":"Process parameters for the casting of quality products under vacuum","authors":"G. K. Mais","doi":"10.1109/EEIC.1991.162612","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162612","url":null,"abstract":"Casting and quality parameters which are directly related to the vacuum casting equipment are discussed. These include the degassing degree of the cast resin constituents, the casting mode and speed, the pre-evacuation time and vacuum before casting, and the viscosity and temperature of the cast resin compound. Casting and quality parameters that are not directly related to the vacuum casting equipment are also examined.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127185273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162566
T. Churchill, J. Edmonds, C. Burns
Comprehensive rotor-mounted scanning of hydrogenerator stators has attained commercial status on the basis of prototype development and extensive beta-site testing on four generators and two pumped-storage units ranging in capacity from 22 to 450 MVA. Thermal, RFI, acoustic, air-gap, magnetic, and rotor vibration sensors are monitored in real-time to provide early warning of impending failures. Resulting data are continuously processed for alarm conditions, analyzed for anomalous technology, and archived for future trend assessment. This technology is now being extended to two and four-pole turbine-driven generators in which the environment is far more severe than in salient-pole hydro machines. The authors provide graphic results obtained using hydrogenerator scanners and describe techniques under development to achieve comparable results with turbogenerator scanners.<>
{"title":"Rotor-mounted scanning of stators in hydro and turbine-drive generators","authors":"T. Churchill, J. Edmonds, C. Burns","doi":"10.1109/EEIC.1991.162566","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162566","url":null,"abstract":"Comprehensive rotor-mounted scanning of hydrogenerator stators has attained commercial status on the basis of prototype development and extensive beta-site testing on four generators and two pumped-storage units ranging in capacity from 22 to 450 MVA. Thermal, RFI, acoustic, air-gap, magnetic, and rotor vibration sensors are monitored in real-time to provide early warning of impending failures. Resulting data are continuously processed for alarm conditions, analyzed for anomalous technology, and archived for future trend assessment. This technology is now being extended to two and four-pole turbine-driven generators in which the environment is far more severe than in salient-pole hydro machines. The authors provide graphic results obtained using hydrogenerator scanners and describe techniques under development to achieve comparable results with turbogenerator scanners.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126553528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162561
L. Molloy, P. Eng.
The report summarizes the changes to the NEMA MW-1000 standard and the NEMA Magnet Wire Technical Committee activities since the 1989 E/EIC Conference. Activities completed, and those planned prior to the next issues of the standard, are discussed. Information on the ongoing activities that lead to continuous improvement of the MW-1000 document is presented.<>
{"title":"Chairman's report-NEMA Magnet Wire Technical Committee","authors":"L. Molloy, P. Eng.","doi":"10.1109/EEIC.1991.162561","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162561","url":null,"abstract":"The report summarizes the changes to the NEMA MW-1000 standard and the NEMA Magnet Wire Technical Committee activities since the 1989 E/EIC Conference. Activities completed, and those planned prior to the next issues of the standard, are discussed. Information on the ongoing activities that lead to continuous improvement of the MW-1000 document is presented.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124798026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-10-07DOI: 10.1109/EEIC.1991.162573
E. Walsh
It is pointed out that in today's regulatory environment, all materials and processes either under development or now in use will be subject to intense evaluation for environmental impact. Many current materials and processes may well have mandated changes. This is not limited to insulating materials, but will include even the most basic processes such as soldering, painting, parts punching, and cleaning. The list of affected manufacturing processes and materials is very extensive, and essentially no organization is too small to not be affected. Another area of major concern is that of reevaluating all current manufacturing processes. Mandated phase-out of ozone-depleting chemicals and reduction in wastes will provide exceptional challenges in the next decade. The author attempts to provide some suggestions as to where effort might be placed and how to benefit from the impending changes.<>
{"title":"The forthcoming forced revolution in manufacturing","authors":"E. Walsh","doi":"10.1109/EEIC.1991.162573","DOIUrl":"https://doi.org/10.1109/EEIC.1991.162573","url":null,"abstract":"It is pointed out that in today's regulatory environment, all materials and processes either under development or now in use will be subject to intense evaluation for environmental impact. Many current materials and processes may well have mandated changes. This is not limited to insulating materials, but will include even the most basic processes such as soldering, painting, parts punching, and cleaning. The list of affected manufacturing processes and materials is very extensive, and essentially no organization is too small to not be affected. Another area of major concern is that of reevaluating all current manufacturing processes. Mandated phase-out of ozone-depleting chemicals and reduction in wastes will provide exceptional challenges in the next decade. The author attempts to provide some suggestions as to where effort might be placed and how to benefit from the impending changes.<<ETX>>","PeriodicalId":367238,"journal":{"name":"[1991] Proceedings of the 20th Electrical Electronics Insulation Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124793772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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