Induction Motor Heaters "Are Those Real?"

Induction motor heaters are commonly an unheard-of component, at first, might sound similar to like "blinker fluid" but this is not a fictitious term.

Industrial motors with space heaters built into the stator windings are meant to maintain a temperature above the ambient dew point. Induction motors are great for a magnitude of applications but have some unavoidable weaknesses.... like moisture. Considering a 500 hp induction motor can produce around 1500 ft-lb of torque (that is more torque than a 1500 hp Bugatti Chiron!) you would think induction motors are indestructible, but they do have some disadvantages.

Moisture can cause damage to bearings and even break down the insulation overtime. Induction motors can be expected to operate in extreme environments, for example, spiral blast freezers that are -20°F during production and 120°F during sanitation. This massive temperature change leads to excessive moisture buildup inside the motor housing. Another scenario is when a motor operates infrequently, this will lead to condensation accumulation, and the motor must be kept warm or overall service life can be shortened (recommend storing spare motors in a climate-controlled area).

If you have a reoccurring problem with a specific motor, it's a good idea to verify the motor is designed for the environment it's located. You can find this information on the name plate such as the recommended operating "ambient temperature" and "altitude". Yes, motors are even designed for a specific altitude due to the change of air density. Motor nameplates provide the user with detailed information to ensure the right motor is being used for the right application.

Moisture is a big enemy to induction motors and reducing the moisture present inside the motor can greatly increase the overall lifespan of the equipment.

MySafety's mission is to provide the industrial manufacturing workforce with the most comprehensive training available! Book an on-site course for a curriculum that is custom-tailored to your process and needs.

Motor Windings with Heater

Our community can't grow without you, and we deeply appreciate your support.

Please LIKE, SHARE, and FOLLOW our content on social media platforms.

Join our newsletter mailing list to stay up to date on our latest articles and information.

KEEP IT COOL & SAFE!