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Motor Starting Capabilities and Considerations

Publication date: 
March 2014
Author(s): 
Tom Bishop, P.E., EASA Senior Technical Support Specialist
Type of media: 
Webinar recording
Recording duration: 
59 minutes

This presentation addresses the topic of a three phase squirrel cage motor’s ability to successfully accelerate a driven load. Although a motor can drive a running load, that is not assurance that it has the capability to accelerate the load up to rated speed. The difference between success and failure is determined by some complex conditions. For example, the motor torque during starting is not constant, and unless the load is a pure inertia load (very rare), it does not have a constant speed-torque relationship. Key considerations addressed include acceleration time, acceleration torque, motor heating, stator and rotor limits, and torque variables.

This presentation will be most useful for service center sales personnel, engineers, supervisors and managers. The content will be beneficial for moderate through highly experienced persons.

Topic(s): 
AC motors
Design/theory/application