The use of variable-frequency drives (VFDs) to control AC motors has increased dramatically in recent years. In addition to their low operating cost and high performance, they save energy. Today, […]
All major manufacturers of 3-phase AC induction motors offer “inverter-duty” or “inverter-ready” models, but while these motors have inverter-rated insulation to protect the windings, their most vulnerable parts — the […]
The AEGIS® Bearing Protection Ring’s patented Nanogap Technology ensures effective electrical contact even when physical contact is broken. Only AEGIS® Nanogap Technology provides both maintenance free contact and noncontact bearing […]
Comparison of AEGIS® Shaft Grounding Rings to Discrete-Point Brushes Download chart below
Challenged to reduce energy consumption, facility managers are installing variable frequency drives (VFDs, also known as inverters) in heating, ventilation, and air conditioning (HVAC) systems. By allowing motors to run […]
Because they provide the ability to precisely match cooling capacity to load, variable frequency drives (VFDs) are widely used in mission-critical data center applications. But, if the motors controlled by […]
At a paper mill in the Midwest, every new motor controlled by a variable frequency drive (VFD) is tested, and if shaft voltages are found, the motor must be equipped […]
It seemed as though nothing could stop the squealing. Not that the Monarch Cement Company’s huge ball mill wasn’t already loud. Powered by a 5,000-HP motor, it pulverizes 100 tons […]
Dan Biby learned it all the hard way. An ordeal concerning several inverter-controlled pump motors with bearing damage made him a believer in the need for shaft grounding. Killer Shaft […]
A preventive maintenance plan that reduces the total life-cycle cost of operations in a prominent building at the heart of New York City serves as a good example of how […]
A SINGLE SPECK OF DUST could spoil a whole experiment at Purdue University’s new Birck Nanotechnology Center. To minimize the likelihood of such a scenario, the building’s HVAC system has […]