Notes on methods of making load tests on large induction motors

This paper gives a description of the methods ordinarily employed in making actual load tests on large induction motors. From this follow the reasons for making compromise temperature tests and enumeration of some of the methods more commonly employed. Comments are made on these various schemes, followed by five examples comparing the results of temperature tests under actual load conditions with results of compromise tests made on the same machines. The conclusion is drawn that compromise temperature tests are desirable and necessary and should have recognition in the Standardization Rules.