Jim Bryan
EASA Technical Support Specialist (retired)
From time to time, the subject of space heating comes up to address issues caused by condensation in idle motors (or generators). Many feel that a motor can receive more harm from being idle than if it is in service. This is especially true in humid environments where condensation can have a negative impact on winding insulation material and machined surfaces.
Condensation forms when the temperature falls below the dew point. This meteorological term refers to the amount of water vapor the air can hold. The higher the humidity, the closer the ambient temperature will be to the dew point. This becomes a condensation problem when warm, moist air cools, especially at nightfall.
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