Determination of motor quality through routine electrical tests

The author describes motor tests that can be performed on new or used fully assembled equipment. The following tests are addressed with regard to test description, required equipment, information generated, cost range, and quality benefit: heat-run; performance; locked rotor; speed torque; no-load saturation; surge, high potential; megohmmeter; dielectric absorption ratio; single-phase rotor; Reed critical frequency; hot/cold vibration; coast-down vibration; bearing; and noise. A specific testing program is recommended, and testing guidelines are given.<<ETX>>