Operational experience with I.E.E.E. #117 motor test procedure

1. Temperature Measurement The thermocouple method of temperature determination has given reliable results but is subject to the following restrictions: a. Enough couples must be used to obtain representative results and provide back-up protection in the event that one couple fails before the motor reaches end of life. b. Sufficient insulation must be provided at the thermocouple tip to prevent cut through of the magnet wire insulation. c. Comparisions between the thermocouple method and the resistance method of temperature determination should be made for each motor design tested.