Calculate the pickup for the 51 phase time over current relay for the motor. The motor is a 460V motor rated for 455 full load amps. The CT on the motor conductor is a 3000/5. Hint: remember the starting current.

Calculate the pickup for the 51 phase time over current relay for the motor. The motor is a 460V motor rated for 455 full load amps. The CT on the motor conductor is a 3000/5. Hint: remember the starting current.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 24SQ: Select the best answer for each of the following. Thermal overload relays react to a. high ambient...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

Calculate the pickup for the 51 phase time over current relay for the motor.
The motor is a 460V motor rated for 455 full load amps.
The CT on the motor conductor is a 3000/5.
Hint: remember the starting current.

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