Recommendations are made for conducting and reporting generally acceptable tests to determine the performance characteristics of conventional DC machines. Two categories of tests are provided: tests of dc motors and generators designed for essentially ripple-free operation, and tests of DC motors designed for use with rectifier power supplies. Electrical measurements and power sources for all test procedures are described. Preliminary tests, performance tests, temperature tests, and miscellaneous tests are covered.

These test procedures include recommendations for conducting and reporting generally acceptable tests to determine the performance characteristics of conventional direct-current machines. The tests are in two categories as described in 1.1 and 1.2.