Cyndi Nyberg Esau
Former EASA Technical Support Specialist

Trickle heating is another very practical option to heat AC stator windings or DC field windings while they are not energized. In this method, a low voltage is supplied to the winding. The advantage of trickle heating on a winding is that you are heating the winding somewhat evenly, rather than relying on radiant heat from an "outside" source. In addition, the maximum surface temperature attained is much lower due to the lower watts per square inch of surface area.

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