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

Staco Energy Products' single-phase and three-phase UPS products from 1 to 250kVA boast the lowest total cost of ownership for applications such as computer rooms, network closets, data centers, computer networks, critical power management requirements, and applications where a high level of available power are essential.  In addition to product offerings to meet a wide range of electrical requirements, Staco also offers a wireless battery monitoring system that helps to control ongoing battery costs which are the single biggest cost of UPS after-point-of-sale operations.


Staco Energy offers a complete line of three phase on-line double conversion models boasting efficiencies of up to 98%, while delivering maximum availability and flexibility. FirstLine® P & PL units can be run in parallel – up to 8 (N+1) for the 480VAC 65-250 kVA model, and up to 4 (N+1) for the 10-40 kVA version.  This provides redundancy for mission critical applications yet requires no additional hardware.   All units are hot swappable, for maximum flexibility, availability and expandability.  Dual Bus System and Dynamic Dual Bus system configurations provide an efficient and reliable power source. Battery run times are best in class.


The Staco family of single-phase online Uninterruptible Power Supply (UPS) now features an industry-leading 3-year warranty.  Available in tower or rack designs, these true on-line, double conversion UPS models protect 1 to 10 kVA loads from outages and irregularities over a wide input voltage range.  The Staco family – which comprises several brands for specific kVA usage points – is ideal for use in computer rooms, network closets and small data centers as well as to protect servers and telecommunications equipment.

The wireless Staco FirstLine® BMS Battery Monitoring System continuously monitors UPS batteries and provides real-time information, ensuring that batteries are ready when needed to support mission critical functions.  The FirstLine ® BMS is compatible with all types of batteries, making it ideal for mains battery back-up and for cross-over transitioning to generator.

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