Are you encountering high no-load current or high current with load? This presentation will look into the causes and cures.

The most frequent concern about high current with a three-phase motor is high no-load current. But the broad issue of high no-load current isn’t the only three-phase motor issue to which plants should pay heed.

The most frequent concern about a motor with high current is high no-load current with a 3-phase motor. That topic has been addressed in three prior Currents articles beginning with “Test Run Tips: Common Causes For High No-Load Current On Rewound Motors” (June 2002); “Avoiding High No-Load Amps On Rewound Motors” (February 2004); and “Taming Those Misbehaving Motors” (December 2009). This article will cover the broad topic of high no-load current with 3-phase motors and the issue of high current with load with 3-phase motors. Also considered will be cases of lower than expected no-load current. 

 El problema más frecuentemente relacionado con la corriente alta en un motor, es la elevada corriente en vacío de los motores trifásicos. Este tema ya había sido tratado en tres artículos publicados anteriormente en la revista Currents de EASA, empezando con “Test Run Tips: Common Causes For High No-Load Current On Rewound Motors” (Junio de 2002); continuando con “Avoiding High No-Load Amps On Rewound Motors” (Febrero de 2004); y finalizando con “Taming Those Misbehaving Motors” (Diciembre de 2009). Este artículo cubrirá el amplio tema de la corriente alta en vacio y el problema de la corriente con carga elevada en los motores trifásicos. También en él se consideran casos en los cuales existe una corriente en vacio menor que la esperada.