Harmonic drive compliance becomes more and more critical every day.  At AID, we focus on a full range of solutions – from passive filters to active front-end drives – all to ensure you continue running reliably, efficiently and in compliance with IEEE-519.

DriveDefender is designed to handle every scenario and all loading conditions, regardless of voltage imbalance or source impedance.  It is so advanced, it can correct for low-voltage conditions from marginal systems and correct power factor within the electrical system, 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