DriveDefender™ Harmonic Filters

Harmonic drive compliance becomes more and more critical every day. That’s why we offer a full range of solutions – from passive filters to active front-end drives – all to ensure reliable, efficient perfomance that’s in compliance with IEEE-519.

DriveDefender is designed to handle every scenario and loading condition, regardless of voltage imbalance or source impedance.
The advanced design can correct for low-voltage conditions from marginal systems and correct power factor within the electrical system – protecting your equipment and saving you money.

  • 103 – 1000+ Amps Designs
  • Meets or exceeds IEEE-519 requirements
  • Fully Gasketed NEMA 3R Heavy Duty Enclosure
  • Integrated isolation contactor for low load condition to prevent VFD over voltage faults
  • Internal Power Distribution Blocks
  • Thermostat controlled fan cooling system with filter
  • Adapts to varying power loads
  • Extends the service life of electrical equipment
  • Generator compatible
  • Industry leading 3-year warranty
OptiPump Controllers Case Study
DriveDefender Harmonic Filters Case Study
Drive Defender 1000M4
Drive Defender 0850M4
Drive Defender 0786M4
Drive Defender 0636M4
Drive Defender 0482M4
Drive Defender 0403M4
Drive Defender 0320M4
Drive Defender 0240M4

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