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A review of the nature of partial discharge in machine windings, how it can be measuredunder both off-line and on-line conditions, how it can be measured for individual form-wound coilsor bars, and the significance and limitations of the measured values are covered.
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In this standard, information necessary to permit an effective evaluation of the insulation systems of medium and small rotating electric machines is presented. The guide is intended to apply in general to industrial air-cooled machines rated from 5 HP to 10000 HP. However, the procedures may be found useful for other types of machines. The standard covers tests to discern existing weakness, tests to give indication of expected service reliability, special tests, and cleaning instructions.
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Electric Machines and Drives.
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Electric couplings are widely used to transmit mechanical torque from one rotating member to another. They are distinguished from mechanical couplings in that their torque transmitting capability is initiated, and is frequently controlled, by the action of an electromagnetic field. This IEEE standard covers the more generally applicable performance characteristics and conducting and reporting of the tests for determining the performance characteristics of electric couplings.
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Electric machines are widely used in industry, energy, and transport, among other sectors. They are also heavily researched with scientific and technological efforts focusing on three main areas: electric motor technologies, supervision and maintenance strategies, and control schemes. This book provides a comprehensive overview of the technology and applications of electric machines. It is organized into two sections on maintenance and control. Chapters address such topics as signal processing and artificial intelligence, fault detection and identification schemes, predictive maintenance strategies, direct torque control and Lyapunov-based sensorless control, and more.
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