For safe, long-term use of a compressor, the motor winding temperature must be kept below certain limits, in all conditions in which the appliance may operate. For example, compressors from AC ...

One of the more elusive causes of three-phase compressor motor overheating and failure is an imbalance in voltage. Compressor voltage unbalance can be found with a voltmeter by measuring between ...

Two expectations informed end-users have of electric motor service centers are reliable best practice repairs and root cause failure analysis (RCFA) to prevent recurring failures. Service centers ...

HIOKI recently announced the launch of the Impulse Winding Tester ST4030, which is the company’s first instrument to provide functionality for testing for defects in motor windings. HIOKI provides a ...

Once the control method of choice only in high-performance industrial ac-servo drives, FOC (field-oriented control) is finding its way into lower end industrial and many appliance applications with ...

Article 430, the largest Article in the NEC, is commonly understood to be the “motor” Article. But if motors are a part of air-conditioning (A/C) and refrigeration equipment, they also fall under Art.