To prevent a motor from burning up, you must provide a means of protecting it from overcurrent (overload, short circuit, or ground fault). If you can remember not to confuse motor protection with ...

Thank you for visiting one of our most popular classic articles. If you’d like to see updated information on this topic, please check out this recently published article, Load Calculations — Part 2.

All major manufacturers of three-phase ac induction motors offer “inverter-duty” or “inverter-ready” models, but while these motors have inverter-rated insulation to protect the windings, the bearings ...

Industrial downtime is often caused by defective bearings. Studies show that about 80% of all bearing damage is owing to insufficient or incorrect lubrication. This is associated with overheating, ...

The PolySwitch LVR Series of resettable circuit-protection devices protect electric motors and transformers from overcurrent and overtemperature damage. The series includes parts rated for line ...

Many modern day scroll compressors incorporate a variety of internal safety controls that can actuate the internal line break motor protection (Fig. 1). Some safety features that can be found in the ...