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 protection for the normal service life of the motor’s bearings as well as the most reliable operation of any shaft grounding technology. Download below to […]
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 at less than full speed, these drives can yield energy savings of 20-30%, but they also induce currents that can damage bearings and shorten motor […]
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 these drives are to be truly mission critical, they must be protected against electrical bearing damage with AEGIS® Shaft Grounding Rings. Download below to learn […]
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 with an AEGIS® Bearing Protection Ring to divert damaging currents to ground. The plant’s electrical reliability engineer established this money-saving specification after many years of […]
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 of clinker (a burned mixture of limestone and shale) per hour. But the squealing was not what Randy Riebel wanted to hear. As electrical supervisor […]
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 Voltages Although destructive currents can occur in any motor, they are more common in motors controlled by inverters, also known as variable frequency drives (VFDs). […]
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 the push for more sustainable, green, building management has led to a growing awareness of a chronic, widespread problem with HVAC motors – electrical bearing […]
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 to be fast, forceful, and flawless. Such high performance is attained by carefully selected air-handling equipment that includes a new grounding device to extend motor life. […]
A new preventive maintenance program at a leading New England Ivy League university demonstrates how the push for more sustainable “green” building management has led to a growing awareness of a chronic, widespread problem with HVAC motors — electrical bearing damage and failure. VFDs, also known as inverters, adjustable speed drives, etc., are widely used […]
Despite the fact that about 70% of factories use them, air compressors are one of the most expensive and least efficient sources of energy. Many times, the energy bills exceed the cost to purchase the air compressor after only two years of operation. In response to the issue of energy consumption, manufacturing companies have become […]