System costs and power consumption can be drastically reduced utilizing digital control of an analog motor circuit. Presented solution of a 3-phase AC Induction motor vector drive based on Freescale's ...

The 3-wire control circuit uses momentary contact devices to control the magnetic motor starter. A typical 2-wire control circuit is shown in Fig. 1 (click here to see Fig. 1). It consists of a ...

Somewhere in most engineering educations, there’s a class on induction motors. Students learn about shaded-pole motors, two-phase and three-phase motors, squirrel cage motors, and DC-excited … ...

PULLMAN, WA — September 26, 2013 — Schweitzer Engineering Laboratories, Inc. (SEL) today announced the introduction of the SEL-710-5 Motor Protection Relay, which protects both synchronous and ...

The topic of motors and motor control techniques is wide and varied. Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control. Part two will ...

Don't forget to measure the coil voltages at the motor control circuit. Motor tripping problems for AC induction motors are commonly associated with sags and low voltages at the control relay and ...

Contactors control current by conducting it through metal contacts that make or break electrical circuits. When combined with an overload relay, a contactor becomes a motor starter. Working with ...