Q5. Describe the following to protect and control the motors: (i) Using circuit diagram and the current-time characteristics, explain the motor overload protection by thermal overload relay. Explain using a circuit diagram how the motor will automatic shutdown when input (ii) fails? (iii) Explain using circuit diagram the under voltage protection of a motor (iv) Draw the circuit diagram to explain the adjustable-frequency drive for a 3-phase induction motor

Q5. Describe the following to protect and control the motors: (i) Using circuit diagram and the current-time characteristics, explain the motor overload protection by thermal overload relay. Explain using a circuit diagram how the motor will automatic shutdown when input (ii) fails? (iii) Explain using circuit diagram the under voltage protection of a motor (iv) Draw the circuit diagram to explain the adjustable-frequency drive for a 3-phase induction motor

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter34: Motor Installation

Section: Chapter Questions

Problem 1RQ: Which NEC table is used to determine the full -load running current for single-phase motors?

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