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Under today's global market requirements, products may be manufactured in a different country than where they are used, and may thus be manufactured to a different standard than that which is required for its intended use. It is important to understand different requirements in order to determine if the product can be used. Considerable alignment between the National Electrical Manufacturers Association...
Rotating machines such as motors, generators, turbines, and compressors utilize many different types of monitoring devices. These devices are critical for the long term reliable operation of rotating machines. Some measuring devices will add significant knowledge of the performance and therefore add value and reliability, while others add little to no value but will add substantial cost. The pros...
Vibration problems in large induction motors can be extremely frustrating and may lead to reduced motor reliability. It is imperative that downtime is avoided or minimized in all production operations. If a motor problem does occur, the source of the problem needs to be promptly identified and corrected. With proper knowledge of the vibration sources, appropriate vibration measurement, and diagnostic...
This paper discusses factors that affect the longevity and durability of an induction motor. Various topics include overall construction of an induction machine and its major components, field and operating conditions, motor vibration, operating temperatures, installation practice and proper motor selection for special environment and application conditions. Sound machine design, proper selection...
In modern industrial systems it can be shown that there is a large advantage in total cost of ownership to match driven equipment, adjustable frequency drives (AFD), and motors at ratings that fully utilize these components. Many industries see a demand for increasingly larger power ratings where the sizing of the components and selection of operating points becomes much more critical than their smaller...
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