Escorregamento em motores trifásicos! Como calcular?

Understand what slip percentage is and how to calculate it related to speed variation in three-phase induction (AC) electric motors. Calculating slip for motors allows you to identify the motor speed in relation to the load and the losses inherent in the system and motor design. Knowing the expected speed variation based on the load and the type of motor used allows for much more accurate and, most importantly, safer sizing of the motor to be used in an application. The sizing of the electrical installation and control are also affected by the slip rate. Among the objectives of this video, we highlight: Presenting the characteristics that lead to slip. Demonstrating the calculations used to find the slip value in motors. We cover the following topics in this video: The speed measured on a motor shaft is not the same as that found in a rotating magnetic field. In other words, there is a difference between these speeds due to factors such as: Load applied to the shaft Bearing wear Friction between motor parts Slip is typically expressed as a percentage. Present the formula and give an example. Highlighted parts in this video: 00:47 - One way to measure a motor's speed to calculate its slip is with a tachometer. 01:01 - The theory of an electric motor is quite simple and can be reproduced in a home experiment. 01:34 - For adequate protection of an electric motor, appropriate circuit breakers, such as the famous motor circuit breakers, must be used. 02:05 - Several variables in addition to voltage and power must be considered when calculating the nominal current of an electric motor. 02:23 - Electrical frequency is present in slip, so frequency is one of the main elements that dictate a motor's speed. 03:07 - Mechanical reductions are solutions for varying the speed of an electric motor, the same type used in electric gates. 03:54 - The time it takes for an electric motor to reach its nominal speed can be varied with a frequency inverter. Other videos that complement this topic: Frequency Inverter Acceleration and Deceleration Ramp |    • Rampa de Aceleração e Desaceleração de Inv...   #MEL_00332 - O Mundo da Elétrica is an electricity channel with quality videos for you to learn on your cell phone, tablet, or on your living room TV. Electrical for everyone! Online classes, PDF manuals, electrical diagrams, and explanations! Join the World of Electricity: On YouTube (click and subscribe): http://goo.gl/vXru8M World of Electricity Website: http://www.mundodaeletrica.com.br World of Electricity Facebook:   / mundodaeletrica   World of Electricity Google Plus: https://plus.google.com/+Mundodaeletr... World of Electricity Twitter:   / mundodaeletrica