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Power factor correction capacitors

Harmonic correction unit

Eaton’s active harmonic filters, known as Harmonic Correction Units  provide dynamic harmonic mitigation and power factor correction by actively injecting reactive currents into an electrical distribution system to cancel damaging harmonic currents and supporting power factor requirements at the point of connection. 

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Download HCUn brochure Download HCU2 brochure Discover harmonic solutions
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Correction Type
HCU2 L-L  
HCUn L-N + L-L
Parallel Connection
HCU2 up to 10 units
HCUn up to 12 units
Max voltage
HCU2 up to 690V
HCUn up to 415V

Core features

  • Triple functionality including harmonic filtering, power factor correction, and load balancing.
  • Modular design allows for multiple HCUs to be paralleled in one system for additional correction capability.
  • Automatic CT configuration allows for ease of installation and simplifies commissioning.
  • Chassis mount HCU provides the ultimate flexibility for installation in multiple applications.
  • Individual harmonic orders can be toggled on or off to fit any load profile.

View operations manual (layouts, technical data and application information)

Download guide spec

Learn more IEEE 519 standards

Eaton HCUn series

Eaton’s HCUn is a static power electronic unit that provides dynamic L-L and L-N harmonic mitigation in typical commercial applications. This units high performance active filtering and power factor correction provide an ideal solution in these settings:

• Airport terminals
• University facilities and accommodations
• Hospitals
• Casinos
• Data center SMPS loads
• Residential
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Eaton HCU2 series

Eaton’s HCU2 is a static power electronic unit that provides dynamic L-L harmonic mitigation in most industrial applications. Its fast reaction to correcting nonlinear loads and power factor make this product an ideal solution in these settings:

• Water and Wastewater treatment facilities
• Industrial manufacturing
• Warehousing plants
• Military bases
• Commercial locations
Read brochure

Ask the experts: Watch video to understand the impact of harmonics

View video series

Harmonics solutions explained 

Harmonics are distorted electrical waveforms that introduce inefficiencies into your electrical system. They produce wasteful heat and can cause plant issues and fees from your local power company. So how do you identify them? How do you address them? What do you need to know? The Harmonic solutions explained white paper will provide you with these valuable insights and a whole lot more.

Download white paper
New white paper - Harmonics Solutions Explained

Stay in compliance with IEEE 519 recommendations

Failing to meet IEEE 519 standards for current distortion is a costly mistake. By placing the Harmonic Correction Unit at the location of harmonic distortion generating equipment you can gain the benefit of internal and external harmonic protection.
IEEE 519 Standard What do I need to know

Harmonic solutions: The mitigation and reduction of harmonics

Learn about harmonic solutions that are commercially available or combinations of products for reducing harmonic currents and minimizing harmonic voltage distortion on a power system.
Discover harmonics solutions
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