Blog Posts on motor analysis




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TYPES OF LOSSES IN ELECTRIC MOTOR OPERATION by Power Systems Loss on Apr 16, 2012TYPES OF LOSSES IN ELECTRIC MOTOR OPERATION What are the typical losses that occurs in electric motor operations?   Energy losses in electric motors fall into four categories: Power losses (Stator and Rotor Losses) Magnetic core losses Frict...



ELECTRIC MOTOR VIBRATION ANALYSIS by Power Systems Loss on Apr 16, 2012ELECTRIC MOTOR VIBRATION ANALYSIS What is the importance of vibration analysis in electric motors? Vibration characteristics and balancingVibration is defined as a mechanical fluctuation from an equilibrium point. Vibration can also be consi...



SPEED CONTROL FOR ELECTRIC MOTOR TUTORIAL GUIDE by Power Systems Loss on Mar 4, 2012SPEED CONTROL FOR ELECTRIC MOTOR TUTORIAL GUIDE How to control the speed of an electric motor? The relationship between rotational speed, supply frequency, number of poles and slip for induction motors is usually written: n = (2/p) x f x 60 x (1...



ELECTRIC MOTOR BRAKING METHODS TUTORIALS by Power Systems Loss on Feb 17, 2012ELECTRIC MOTOR BRAKING METHODS TUTORIALS What are the methods in stoppng/braking an electric motor? MECHANICAL BRAKING Mechanical braking with magnetic lifting is the technique most widely used for the braking of electric motors. At standstill brake...



TYPES OF FUSES FOR ELECTRIC MOTORS PROTECTION by Power Systems Loss on Jan 23, 2012TYPES OF FUSES FOR ELECTRIC MOTORS PROTECTION Different types of fuses for electric motor protection Fuses are over-current protective devices that are placed in an electrical circuit to protect the control components, wiring, insulation, and motor...



BASICS FOR ELECTRIC MOTORS PROTECTION by Power Systems Loss on Jan 21, 2012BASICS FOR ELECTRIC MOTORS PROTECTION Overview on the importance of electric motor protection. Every electric motor has operating limits. Overshooting these limits will eventually destroy it and the systems it drives, the immediate effect being...



ELECTRIC MOTOR SHORT CIRCUIT PROTECTION OVERVIEW by Power Systems Loss on Jan 21, 2012ELECTRIC MOTOR SHORT CIRCUIT PROTECTION OVERVIEW How are electric motors protcted from short circuits? A short circuit is a direct contact between two points of different electric potential: 1. Alternating current: phase-to-phase contact, phase-to-n...



ELECTRIC INDUCTION MOTOR DESIGN: IEC MOTOR DESIGN LETTER GUIDE by Power Systems Loss on Jan 16, 2012ELECTRIC INDUCTION MOTOR DESIGN: IEC MOTOR DESIGN LETTER GUIDE What are the motor design types that are provided by IEC? Motors covered by this IEC standard are classified by the following designs: Design N Normal torque three-phase cage induction...



ELECTRIC INDUCTION MOTOR DESIGN: NEMA MOTOR DESIGN LETTER GUIDE by Power Systems Loss on Jan 16, 2012ELECTRIC INDUCTION MOTOR DESIGN: NEMA MOTOR DESIGN LETTER GUIDE What are the motor design types that are provided by NEMA? NEMA Design LetterChanges in motor windings and rotor design will alter the performance characteristics of induction motors. M...



ELECTRIC MOTOR MOUNTING USING NEMA DIMENSIONS TUTORIAL GUIDE by Power Systems Loss on Jan 15, 2012ELECTRIC MOTOR MOUNTING USING NEMA DIMENSIONS TUTORIAL GUIDE What are the guidelines in mounting electric motors using NEMA? NEMA has standardized motor dimensions for a range of frame sizes. Standardized dimensions include bolt-hole size, mounting...