Sine Wave Filter Prevents VFD Motor Damage

July 15, 2015

These Sine Wave filters eliminate premature motor damage caused by high dv/dt, overvoltages, cable ringing, motor overheating and eddy current losses caused by Variable Frequency Drives (VFD) and elongate service life of expensive high speed motors. By eliminating circulating bearing currents they can also improve bearing life.

Typical applications include high-speed spindles, textile machinery, lasers, military appliances (400Hz), HVAC applications, pumps, ventilators, conveyors, compressors, elevators, cranes, step-up transformers, motor drives with multiple motors, and motor drives with long motor cables.

  • For motor frequencies up to 600Hz
  • Model FN5020 and FN5040 Sine Wave filters are offered as open and enclosed
  • Available for motors up to 200 HP (UL508C) over 200 HP to 800 HP (UL pending)
  • Easy to install
  • Provide immediate results