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Accessorizing Your VFD for Proper Operation and Power Quality

  • July 2021
  • Number of views: 1557
  • Article rating:

Megger Baker InstrumentsPresented by Matthew Conville, P.E.
EASA Technical Support Specialist

This webinar goes through the basics of what accessories may be needed for proper VFD control and power quality add-ons to improve motor driven system reliability. Just buying and installing a VFD isn’t enough to ensure proper operation of a motor driven system in its application, nor does it protect upstream and downstream devices from power quality issues. Topics include:

  • Drive accessories
    • Operator panels, encoders, position encoders, communication devices
  • Power quality accessories
    • VFD cables and EMC terminations
    • Input reactors and/or isolation transformers
    • Output filters (reactors, dV/dt, sinusoidal, inductive chokes, etc)
  • Impacts on AC motors
    • Reduction in SF
    • Winding failures
    • Shaft voltage/bearing currents
    • Turn down ratios

This presentation will be useful for anyone new to VFD applications, or anyone in need of a refresher course. 

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