Electric Motors – Definitions

The electric motor is a machine designed to transform electrical energy into mechanical energy. It has evolved over time to suit different applications.

In 1885, Galileo Ferraris, an Italian physicist, based on the studies of Michael Faraday’s electromagnetic induction law shown in 1831, developed the asynchronous electric motor of alternating current which can also be synchronous or asynchronous, single-phase or three-phase.

With regard to the power supply of electric motors we have two items, namely: the dimensioning of the power cables and the characteristics of the service network.

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NBR is the acronym for: Brazilian Rules of Regulation. The standards of NBR 17094 indicated for voltages and frequencies must be obeyed in relation to the characterization of the electrical network. Already for the dimensioning of power cables of the electric motors determined by its nominal current, it must obey the indications of the NBR 5410.

Over time, various types and models of electric motors have been developed, and these have been improved according to the needs that have arisen. Today, electric motors are found in various shapes and sizes, each suited to their task, no matter how much torque or power an engine needs to develop.