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Manejando los Esfuerzos de Voltaje en Aplicaciones VFD con Motores IEC

  • June 2022
  • Number of views: 3975
  • Article rating: No rating

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.

EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 2: AC Machines
  • Section 5: Electronics

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 7: Stators

Principles of Medium & Large AC Motors (IEC Standards)
Root Cause Failure Analysis
  • Section 3: Stator Failures

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Tags: Variable frequency drives IEC
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