Merus™ A2 – Active Harmonic Filters

Merus™ A2 – Active Harmonic Filters

Merus™ Active Harmonic Filters provide a solution for real-time cancellation of harmonic distortions created by non-linear loads to ensure compliance with IEEE 519, G5/4, EN 50160 and also other power quality standards and recommendations. Merus™ Active Harmonic Filters are a versatile solution, easily tailored to deliver power factor improvement, voltage variation control, flicker mitigation and load balancing functionality.

The Merus™ A2-series Active Harmonic Filters are built on 3-level topology and are designed for light industrial and commercial buildings with voltage level up to 690V in both 3W and 4W applications. Merus™ M-series Active Harmonic Filters are customized for demanding applications and are available from 480V up to 1000V. Equipped with state-of-the-art monitoring and reporting functionality, the robust Merus™ Active Filters operate in harsh environments and are easily scalable. Merus™ A2-series Active Harmonic Filter have UL-certificate of compliance.

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Functions and customer benefits

Key functions
  • Active harmonic filtering
  • Power factor correction
  • Voltage variation control and flicker mitigation
  • Load balancing in three-phase systems
Customer benefits
  • Energy savings
  • Higher productivity
  • Reliable plant operation at reduced maintenance costs
  • Longer lifetime of electrical and process equipment
  • Additional electric capacity in existing electrical network
  • Compliance with IEEE 519, G5/4, EN 50160 and also other power quality standards and recommendations
  • Quick return on investment


Merus™ Active Harmonic Filtering technology can be applied to wide range of industrial or commercial environments where good power quality is essential. Merus™ Active Harmonic Filters have been used for the processes that use Variable Speed Drives (VSD), fast fluctuating loads such as welding machines, Uninterrupted Power Supply (UPS) systems and DC load, single phase loads such as lighting and computers as well as electric arc furnaces and rolling mills.

Applications in commercial buildings
  • Data centers & IT
  • Airports
  • Hospitals and laboratories
  • Residential buildings
  • Shopping malls
  • Financial institutions
  • Ski resorts
  • Amusement parks
Applications in infrastructure and renewable energy
  • Water and wastewater treatment plants
  • Heating, ventilation and air conditioning systems (HVAC)
  • Wind and solar farms
  • Traction
  • Metro stations
  • Cranes
  • Lifts
Applications in industry
  • Welding processes in automotive industry
  • Printing industry
  • Chemical Industry
  • Steel industry
  • Cement industry
  • Food and beverage industry
  • Oil and gas industry
  • Pulp and paper industry
  • Textile and clothing industry
  • Pharmaceutical industry
  • Microelectronic manufacturers
  • Package sorting facilities
  • Marine vessels

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