UNIVERSITIES The university conducted research and tested several options, including a silver brush contacting the motor shaft. Helwig Carbon Products has developed and refined this technology. It features a specially engineered silver graphite brush that is installed in contact with the motor shaft and connected to ground. This provides for a path of least resistance for the induced currents to get to ground without discharging through the motor bearings. Why are our motors failing? The University of Nebraska-Lincoln was experiencing many motor failures on their HVACR equipment. A study by the Facilities Planning and Construction team led to the fact that most of these failures were due to motor bearing damage caused by induced shaft voltages from the us

Join for free to read