Sometimes the hardest part is getting started. Choose the best motor starting method for a particular application by keeping a few guidelines in mind. For example, while across-the-line starting is ...

This is the second half of a two-part article discussing principles and application of the AC induction motors that provide motive power for most of the equipment HVACR engineers specify. In March, we ...

OPERATION When power is applied through the cycling control, both the run and start windings are energized (Figure 2). The run and start capacitors provide the phase shift for starting torque because ...

The IronHorse permanent magnet DC 56C-frame motor line, with a base of 1800 RPM, is designed for use on unfiltered SCR (Thyristor) type 115 or 230V rectified AC inputs, when used with an appropriate ...

I'm an incurable hot rodder. If I see a component that promises power, I have to exercise supreme self-control to keep from letting the wrenches fly. This affliction has both positive and negative ...

Bearing torque is the moment required to overcome internal friction to start or maintain rotation of one ring while the other is stationary. Torque or friction generally increases when: Bearing size ...

Some motors can start under load, and some can’t. Where a motor is coupled to the load without an intervening clutch system on the load end, assume the motor cannot start under load unless you verify ...

Selection of replacement motors is usually straightforward if the ratings are equivalent. Sometimes, however, a different type of motor is necessary or desirable. For success in these cases, it is ...