Protecting VFD-Driven Motors in
Healthcare Facilities

Saving Energy is Important...
Many hospitals are looking for ways to reduce energy consumption. One of the most promising involves the use of variable frequency drives (VFDs) to control the speed of HVAC motors. In fact, in such applications. VFDs have been shown to reduce energy consumption by 20 to 30%. But, while energy savings are important, they must never jeopardize patient safety.

Protecting Patient Safety is Paramount
When dealing with today’s advanced medical procedures, the loss of vital equipment could mean the loss of a patient’s life. So, for operating rooms, labs, and quarantine areas, the reliability of ventilation equipment is critically important in safeguarding sterility and preventing infection. In an effort to ensure the quality of vital operating room and intensive care environments and 100% uptime of critical equipment, hospitals and healthcare facilities are looking for ways to prevent motor failures by protecting their bearings from VFD-induced electrical damage.

The Need for Shaft Grounding on
VFD-Driven Motors
VFDs can damage the motors they control. They induce currents on motor shafts that discharge through the bearings, causing pitting, fluting, and catastrophic motor failure. Without bearing protection, any savings from the use of VFDs can be quickly wiped out by the cost of replacing motors and by system downtime. More importantly, such bearing failures in healthcare facilities can put patients at risk.

Proven, Long-Term Bearing Protection
By diverting bearing currents safely to ground, AEGIS™ SGR Shaft Grounding Rings ensure the reliable, long-term operation of VFD driven motor systems, locking in energy savings and making these systems truly sustainable and truly green!