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Answer the following questions without referring to the material just presented. Begin the next section when you are confident that you understand what you’ve already read.
- Describe the purpose of overload protection for an electric motor.
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- A motor goes through three stages during normal operation. Name them, and the typical percentage of full load current they draw.
_____________ ______%
_____________ ______%
_____________ ______%
- Define and explain the importance of a motor’s synchronous speed.
_____________________________________________________________ _____________________________________________________________ _____________________________________________________________
- Explain why fuses or circuit breakers cannot properly protect an electric motor.
_____________________________________________________________ _____________________________________________________________
- Compare and contrast the function of the three overload relay types:
_____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________
- Define trip class.
Trip class is _____________________________________________________.
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