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Tyler Voss Membership & Communications Specialist+1 314 993 2220tvoss@easa.com
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Matthew Conville, MBA, PE Especialista de Soporte Técnico de EASA
En la economía global actual, es posible adquirir motores eléctricos fabricados en todo el mundo. Esto nos ofrece muchas opciones para seleccionar un motor eléctrico. La mayoría de los motores eléctricos de 500 HP (373 kW) o menos se ajustarán a una de las dos normas básicas de fabricación; NEMA o IEC. Ambas normas tienen cláusulas específicas que definen los límites de sobretensión a la que se pueden someter las máquinas de inducción en aplicaciones que funcionan con variadores de frecuencia (VFD)/ convertidores. La intención de este artículo es centrarse en las normas IEC para gestionar la sobre tensión en aplicaciones con VFD en lo que respecta a los devanados del motor. Si se necesitan más detalles sobre las aplicaciones NEMA, consulte NEMA MG-1 Parte 31.
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Have you ever wondered how a lightning rod works? That small rod atop a large building extends less than a yard (meter) above the building. Yet the lightning is attracted to that sacrificial rod rather than to the building. If you have not wondered about lightning rods, Iʼll bet you are curious about what lightning rods could possibly have to do with electric motors. The common denominator between electrical windings and lightning rods is geometry.
This 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.
This booklet covers topics such as:
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The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.
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Recommended Practice for the Repair of Rotating Electrical Apparatus This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.
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Revised May 2024 The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.
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