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Industry and General Applications, IEEE Transactions on

Issue 2 • Date March 1971

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Displaying Results 1 - 21 of 21
  • IEEE Transactions on Industry and General Applications - Table of contents

    Page(s): c1
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    Freely Available from IEEE
  • IEEE Industry and General Applications Group

    Page(s): c2
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    Freely Available from IEEE
  • The Industrial Electrical Engineer's Responsibilities and How They Reflect on Management

    Page(s): 169 - 177
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    The technological as well as the administrative responsibilities of the electrical engineer in today's industrial society are discussed and it is shown how these reflect on his organizational status. The paper will be of interest to the experienced engineer as a tool to assist in management presentations, project presentation planning, and recognizing forgotten responsibilities; it will serve him by presenting methods of management exposure for the promotion of the individual and his ideas. View full abstract»

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  • Man-Machine Symbiosis: A Conspectus of Interactions

    Page(s): 178 - 180
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    In this tutorial paper the authors review the interactions of man with machines from a hierarchical point of view. These interactions have been principally associated with utilization of machines until the last decade. During this latter period, the development of computers as data-processing and information-retrieval devices has evolved to a higher level of interactions. Several pertinent accomplishments and seemingly inherent problems associated with these developments are presented. View full abstract»

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  • Power-System Analysis: What It Can Do for Industrial Plants

    Page(s): 181 - 188
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    Power-system analysis primarily consists of the techniques used to predict or improve the performance of an existing or proposed power system under specified conditions. These Techniques, when applied to industrial power systems, can contribute heavily to fulfillment of the goals of industrial-system design, such as safety, reliable service, high-power quality, and low initial and operating costs. Principal types of industrial-system studies include short circuit, protective device coordination, load flow, transient stability, motor starting, grounding, transient overvoltage, power-factor improvement, and miscellaneous design and application studies including combinations of the above. Power-system analysis should be applied whenever a new or revamped power system is being planned, when the load or capacity of an existing system is markedly changed, or when the existing system requires trouble-shooting. View full abstract»

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  • Motor Group Installations: Where Have We Been and Where Are We Going

    Page(s): 189 - 195
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    The history and development of the permission granted in the National Electrical Code to group motors on a single branch circuit is reviewed. The interpretation placed on the pertinent sections by code-making authorities and the testing of controls for such use is discussed, and several needed improvements are suggested if this installation practice is to continue to be expanded. View full abstract»

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  • Overload Protection of Motors---Four Common Questions

    Page(s): 196 - 207
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    The four most commonly asked questions regarding overload protection of small induction motors (up to 200 hp) are discussed. 1) What are the common causes of motor failures? 2) What types of overload protection are available, and what are the advantages and disadvantages of each? 3) When are three overload relays required? 4) Do moderm overload relays protect the new NEMA rerate motors? View full abstract»

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  • Design of a High-Power Zener Diode and Its Energy Absorption Capability

    Page(s): 208 - 211
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    The structure and performance of a high-power zener diode to be used for transient suppression or voltage regulation are described. A technique for accurately determining the energy absorption capability for pulse durations down to 10 ¿s is also described and used in rating the device. View full abstract»

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  • Performance and Characteristics of Induction Motors for Solid-State Variable Frequency Drives

    Page(s): 212 - 217
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    Polyphase induction motors used in static variable frequency drive systems are versatile torque transducers having operating characteristics and features which meet the requirements of modern variable speed drive systems. Some of these characteristics are the capability for operation at very low and high speeds, at high-torque overloads, in a constant horsepower versus speed mode, and in the negative torque range for regenerative and dynamic braking. Attractive features include the easy availability of wide ranges in horsepower, voltage, and speed ratings as well as varied construction configurations. Additionally, induction motors have size, weight, torque-to-inertia ratios, and certain cost advantages when compared to dc drive motors. View full abstract»

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  • High-Intensity Discharge Lamps and Their Environment

    Page(s): 218 - 224
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    Many characteristics of high-intensity discharge lamps such as arc luminance, color variations, the effects of operating position and ballasting, and the interaction of lamp and luminaire properties are important for system design and testing. However, these data are not as readily available as the normal lamp descriptions of luminous flux, physical size, etc. This is a tutorial paper that discusses the less frequently mentioned characteristics that are important for the proper use of high-intensity discharge lamps. View full abstract»

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  • Sleeve Bearings for Large AC Motors

    Page(s): 225 - 229
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    The advantages and characteristics of sleeve bearings that make them the most frequent choice for large ac motors are discussed. Important considerations for selecting a bearing type are presented and discussed with the objective of providing helpful information to users of large ac machines. View full abstract»

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  • The Advantages of Ball Bearings and Their Application on Large-Horsepower High-Speed Horizontal Induction Motors

    Page(s): 230 - 236
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    Many of today's specifications continue to limit the use of ball bearings on induction motor drives to on or below 200 hp. Advances in bearing technology and manufacture, along with increased bearing selection and application knowhow, have greatly increased the horsepower range over which ball bearings may be reliably used. Many performance and operational advantages are enjoyed through the use of ball bearings. With proper bearing selection and application, ball bearings can and are being successfully applied to motors as large as 2000 hp running at 3600 r/min with excellent results in bearing performance. With increased confidence in ball bearing reliability, acceptance of motor drives with these types of bearings should be greatly expanded in the immediate future. View full abstract»

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  • Cost Effectiveness of Supervisory Control Systems

    Page(s): 237 - 266
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    Effectiveness of supervisory control systems for pipeline application is discussed. An industry survey of 74 existing systems shows the relationship between costs and effectiveness. The results of the survey are discussed and compared to several reference articles on electronic system design and performance. A plan to predict cost effectiveness is shown. Improvements in supervisory control equipment performance could come from 1) integrated circuits, 2) parallel low-speed data paths, 3) code structure compatible with standard computer-communication interface practices. View full abstract»

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  • Controlled-Torque Starting of Textile Machinery

    Page(s): 267 - 272
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    Control of the starting torque of textile machinery drives has become an important factor in the effective performance of textile machinery. Increased operating speeds to achieve greater production requires more precise acceleration of machine components to ensure efficient operation. Controlled acceleration also eliminates premature failure of the machine elements. Many factors must be considered in determining the optimum system for a given machine. Some of the applications in which controlled-torque systems could be used advantageously and some of the controlled-torque systems that are available are investigated. View full abstract»

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  • On-Site Electrical Power Generation and Distribution for Large Oil and Gas Production Complex in Libya

    Page(s): 273 - 289
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    The power generation and distribution system constructed for Occidental of Libya, Inc., a wholly owned Subsidiary of Occidental Petroleum Corporation, in an isolated location in the Libyan desert is described. This system includes packaged gasturbine driven generators at two locations, connected by a 69-kV transmission line, large brushless synchronous motors, and a 13.8-kV plant distribution scheme. View full abstract»

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  • Application of New Methods for Calculating Short-Circuit Duties and Power Circuit-Breaker Capabilities

    Page(s): 290 - 302
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    The more salient points in the application of ac high-voltage circuit breakers according to new Standards C37.010 1964 and C37.5-1969 are outlined. The relationship between circuit-breaker rated interrupting and momentary capabilities and the corresponding calculated duties is defined. Areas of ambiguity, omissions, and controversy which exist in the standards are under review at the present time. The authors report some of these areas for information only. View full abstract»

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  • A Procedure for the Format of Schematic Diagrams for Design, Construction, and Maintenance

    Page(s): 303 - 313
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    Electrical schematic diagrams serve many functions in industry. A continuous process manufacturing plant has unique requirements not always satisfied by existing formats. The varied applications of schematic diagrams are discussed from the stand-point of an industrial user. References to current industry standards are cited and several additional features are explained. A detailed procedure for the format of a schematic is developed. Advantages resulting from this procedure are summarized. View full abstract»

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  • Electrostatic haring and Dissipation of Dust Clouds in Enclosed Rooms

    Page(s): 314 - 317
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    Experimental results are presented on a method of cleaning the particles in suspension in the air of a working area, without circulating the air. Only a small percentage of the particles are charged directly by means of a light carriage supporting a grid of alternate corona and ground potential wires and traveling back and forth through the smoke and dust cloud. View full abstract»

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  • Torque Pulsations in Induction Motors with Inverter Drives

    Page(s): 318 - 323
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    Torque pulsations in induction motors would have an average value of zero and therefore are generally neglected by inverter induction machine system designs. A simple equivalent circuit method is presented for estimating the magnitude of torque fluctuations under steady-state operating conditions based on single-phase equivalent circuits. The method indicates that torque fluctuations are due mainly to the interaction of fundamental flux in the air gap at harmonic rotor currents. Inverters producing a 6-stepped voltage waveform, the predominant pulsating torque is at the sixth harmonic and the magnitude of the fluctuation is independent of operating frequency, provided that constant volts per Hz is maintained. The method is extendable to PWM inverter-machine systems with similar conclusions with respect to variation of torque over the input frequency range. However, for the PWM inverter with a fixed number of pulses per cycle, the torque pulsations can approach or exceed full-load average torque. The method outlined is simple and amenable to hand calculations. View full abstract»

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  • 480/240 Volts for Farmstead Electrical Systems

    Page(s): 324 - 327
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    A number of practices have been used to improve voltage regulation of electrical systems and equipment performance on farms. An increase of secondary voltages from 240/120 to 480/240 V would provide an even greater improvement and substantially reduce costs of secondary services for large installations. Farmsteads with large loads, long feeders and branch circuits, and those with scattered utilization points will receive the greatest benefits from higher farmstead voltages. Conductors, service equipment, and many utilization devices are commercially available for 480/240 V. Several types of three-phase and single-phase systems may be used with the higher voltage secondary system. Dry-type transformers would allow operation of present utilization devices requiring 240/120 V. View full abstract»

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  • IGA Group Chapter Chairmen

    Page(s): 327-a
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    Freely Available from IEEE

Aims & Scope

This Transaction ceased production in 1971. The current retitled publication is IEEE Transactions on Industry Applications.

Full Aims & Scope