Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

heater

See overload heater
overload heater
a term used to describe the thermal sensors that detect motor overload currents. Usually located on the motor starter, the heaters cause the overload relay to operate.
superheater
a heat exchanger that increases the steam temperature to about 1000 degrees F. It is heated by the flue gases.
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