Articles tagged Electric motors

What you will learn from this article. 

• Electric motor power current draw reflects the motor’s working load.
• The electric current through a power cable can be measured using the strength of the magnetic field created around the cable.
• Under-current detection protects against loss of load situations.
• Over-current detection protects against over-load situations.

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This article presents a basic explanation of electric motor construction and operation along with eleven problems that can be encountered with their use.

Most electric motors in industrial equipment are three phase alternating current induction motors. Induction is the creation of an electric current across a gap. Two types of induction motors are commonly used: squirrel-cage and wound-rotor. The names come from the way they are built.  [Read more…]