Posts Tagged ‘the motor’

Checking phase sequence of 3 phase supply

January 26th, 2017 | Make a comment | Posted in Energy Efficiency - motors
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megaphone-blueToday, let’s read a guest post written by A.N, one of our loyal fellow electrical engineer. Since the end of year 2016 he has published articles quite often in the blog and we thank him. If you want to do like him, please send us mail.

The correct phase sequence is required for the proper operation of any three phase system. It ensures that the load works as desired, when incorrect, the equipment such as the motor may malfunction, rotate in the reverse direction. The phase reversal may damage the motor or the equipment the motor is driving.

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Causes of faults in electric motors and their effects

October 21st, 2016 | 3 Comments | Posted in Energy Efficiency - motors
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Toay, A.N. tells us about AC motors/electric motors and the causes of faults. If like him you want to discuss a topic that you like, send us a mail and we will publish it after a short review!

Failure in electric motors may occur at start-up or during operation. Most of the electric motor failures occur at start up due factors such as low insulation resistance, over-current or mechanical failures. Other causes include issues with the supply, operation environment or lack of maintenance.

Most of the motors, regardless of type and rating have a long service life and only require a minimum maintenance to ensure they do not malfunction. It is recommended to regularly maintain the motors and associated equipment, and to check for signs of aging of the insulation or other parts that may degrade the motor.

Main parts of an electric motor

Main parts of an electric motor | image: je-bearing.com


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