Bearing Current

   Known as or related to:
Common Mode

Common Mode currents are damaging to equipment and result in motor down-time.

Causes of Bearing Current
Common mode voltage occurs when the voltages on the three output lines of a drive do not sum "instantaneously" to zero. The V1k substantially slows down the rate of change of PWM switching as seen by the load. This reduction in the rate of change results in increased capacitive coupling impedance between bearings and bearing races. This increase in impedance, in turn, reduces the damaging Common Mode currents and increases motor up-time.

Indicators of Bearing Current

  • Damaging Common Mode Currents
  • Motor Down-Time

 

Motor Protection Solutions 

 After V1k  
After V1k Substantially slows down the rate of change of PWM switching as seen by the load. 
Learn more about the V1k

Resources

 

Copyright© 2011 TCI, LLC     Tel. (414) 357-4540     Fax. (414) 357-4484     W132 N10611 Grant Drive, Germantown, WI 53022     Information may be subject to change
This site is powered by the Northwoods Titan Content Management System

FOLLOW US

 Follow us on LinkedIn  Follow us on YouTube Follow us on Google+