Practical Experience with Thermal Cycling per IEEE 1310–2012. Alternative Approach to Monitor Copper Temperature and to Efficient Cooling Air Flow

Thermal Cycling (TC) test is commonly used for long period of time and in 2012 the standard IEEE 1310 become a recommended practice with details of test parameters and test procedure. Meeting of the specified test parameters is very important. Authors describe their considerations to meet requirements IEEE 1310 for uniformity of the temperature distribution and controlling the copper temperature. IEEE 1310 instruction for cooling air circulation is too restrictive and may not provide the adequate cooling especially for large coils. In the same time standard should provide more guidance for copper temperature measurement. Thermocouple should be installed directly in contact with the conductor for the proper measurements.