In Low Voltage Transformer specifications, what is meant by ``Class AA``?

Issue:
What does Class AA mean on Low voltage transformers?

Product Line:
LV Transformers

Environment:
Applies to Low Voltage Transformers by SquareD/Schneider Electric

Cause:
Transformers can have AA or FA specifications on the nameplate

Resolution:

Class AA indicates that the Transformer is cooled by Ambient Air.   SquareD/Schneider Electric Low Voltage Dry Transformers are ventilated by means of air cooling.

Released for: Schneider Electric USA