Harmonic Filtering & Cancellation

Staco Energy Products Co.

With other harmonic filtering solutions, expensive and time consuming site data collection, power quality surveys and computer generated studies are usually needed.  Most harmonic filters are designed to accommodate just one or a few harmonic orders.  The StacoSine Plus corrects a full range of harmonic orders, and will not create a resonance condition with existing equipment.

Staco Energy Products has taken traditional "passive" harmonic filtering equipment to a new level with StacoSine Plus, an active based harmonic filter technology.

StacoSine Plus injects compensating current into the load to restore the sine wave and dramatically reduce distortion to less than 5% THD.  Its high speed process cancels high frequency output current, while it determines the precise value of injected load current.

StacoSine's power electronics platform has been designed to operate at levels that continuously adapt to rapid load fluctuations.  With its efficient operation and small size, it is ideal for a wide variety of industrial and commercial environments, such as:

  • Fluorescent Lamps
  • Computers and Peripherals
  • Variable Frequency Drives (VFDs)
  • Welding Machines
  • Uninterruptible Power Supplies
  • Frequency Converters
  • DC Power Systems/Chargers

Active Harmonic Filter - StacoSINE Plus


  • Immediately improves electrical system efficiency
  • Reduces operations and maintenance costs
  • Quick and easy installation, with virtually no downtime
  • No need for complex site analysis
  • Dynamically corrects a wide spectrum of harmonic orders


  • UL 508 and cUL Listed
  • Voltage ratings from 208 to 480vac (690vac with transformer)
  • 25 to 200 amp ratings
  • Cancels 3rd to 51st orders
  • Global or selectable harmonic parameters
  • Graphics display and analyzer
  • Three and four wire (neutral) arrangements
  • Individual or parallel systems for added capacity
  • NEMA 1, 12, 3R enclosure ratings
  • Open-Chassis for 20"D enclosures to 200 amp
  • Integration with MCC's, electrical enclosures
  • Ideal for VFD's, pumps, UPS, Generation

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