4. Influence of the environment on the design of an electrical machine

4.1 Climatic factors

• Maximum permissible operating temperatures at the windings are defined by the insulation class of the insulating materials used, so it's easy to see how ambient temperature can influence the design of the machine or its field of application: in a high ambient temperature, for the same final temperature, operating power will be lower.

  Note :

  Standard EN60034-1 specifies machine temperature limits according to cooling mode and insulation system thermal class.

  Note :

  Standard EN60034-3 specifies specific rules for electric alternators driven by gas turbines. In this case, the power limit is specified as a function...