Merus® A2
Active Harmonic Filter
A scalable, versatile, and durable active harmonic filtering solution designed and manufactured in Finland using innovative Merus® Technology.
Merus® A2 Active Harmonic Filter is a proven product. It eliminates harmful harmonics to keep your power clean, your systems efficient, and your operations running without disruption.
Smart system design
- Easily scalable with modular design
- Modern user experience with no cryptic codes
- Parallel structure where each unit operates as master or slave
- Reliable plant operation and longer equipment lifetime
Proven value for your operations
- Proven reliability with 5000 deliveries over 10+ years
- High customer satisfaction with NPS 46
- Full service backed by decades of power quality expertise
- Flexible delivery with cabinet or module installation
Verified performance
- Compliance with key standards (IEEE-519, G5/4, EN 50160, and others)
- Fast response time under one network cycle, harmonics mode under 100 µs
- No over or under compensation
- Support for both open and closed loop CT configurations
Download technical datasheet
Request for Quotation for Merus® A2
What can Merus® A2 do for you?
Active harmonic
filtering
Merus® A2 detects harmonic distortions caused by non-linear loads and cancels them in real time. It ensures compliance with the harmonic limits defined in IEEE 519, G5/4, EN 50160, and other power-quality standards.
The system can be installed to mitigate harmonics from a single large load or multiple loads.
Dynamic reactive power compensation
Merus® A2 provides dynamic reactive power compensation for power factor correction, voltage variation, and flicker mitigation. This improves electrical efficiency and saves money.
Load current
balancing
Phase-to-phase-connected equipment can burden only two of the three lines, creating voltage unbalance between the phases.
Merus® A2 offers dynamic load balancing that distributes the load more evenly across all three phases, preventing overloading of the electrical system.
How does Merus® A2 work?
Merus® A2 operate similarly to noise-canceling headphones.
They measure the distorted current of the non-linear load and inject harmonic frequencies, but with an opposite phase angle. Canceling out harmonic currents reduces voltage harmonics and eliminates distortion at the point of common coupling.
They are connected in parallel with the loads to be compensated and measure the distorted current of the non-linear load then inject harmonic frequencies, but with an opposite phase angle. Canceling out harmonic currents reduces voltage harmonics and eliminates distortion at the point of common coupling. Only the fundamental frequency current component is left to be supplied from the power system.
Module or cabinet solution?
Merus® A2 MODULE
- Small installation footprint
- Standard: IP20 – Upgradable up to IP30
- Possibility for partner/retailer to add value by cabinet integration
- Easier logistics, local sourcing
- Includes: Merus® A2 modules and Merus® HMI
Merus® A2 CABINET
- Hides busbars, fuses, wiring
- Standard: IP21 – Upgradable up to IP54
- Keeps unwanted objects outside
- Touch protection
- Includes: Merus® A2 modules, HMI integrated into electrical cabinets
- The customer only needs to take care of the CTs that measure the current from the network or load side (depending on configuration)
Where can I buy Merus® A2?
Calculate your harmonics
Estimate harmonic levels in your system and define the filtering needed.
Contact us
Talk to our experts to define your power quality needs and find the right solution.
Contact our partner network
Find your local partner and get support close to your installation.
Check out our related articles
Power quality: common problems, root causes, and proven mitigation
Modern manufacturing depends on stable, clean electrical power. As plants add Variable Frequency Drives (VFDs), automation, robotics, high-power charging, and electrified thermal processes, electrical networks…
Ensuring power quality and improving energy efficiency with Merus’ active filter technology will contribute to the success of the significant infrastructure project in Egypt
Merus Power delivers the largest single active filter order in its history to Egypt. The order is being placed by a significant infrastructure development project….
Is your Power Factor Correction system meeting today’s needs?
Why power factor correction matters Power factor correction (PFC) is used to improve the efficiency of electrical power systems by producing reactive power locally instead…
Do you have any questions?
Please contact one of our salespeople with questions and inquiries.
Riku Kalliomaa
Head of Sales, Active Harmonic Filter
Global
Mikko Pohjola
Sales Manager, Active Harmonic Filter,
Key Accounts & OEMs
Viktoria Mansikkala
Sales Manager, Active Harmonic Filter
Partners, Europe
Pauli Halonen
Sales Manager, Active Harmonic Filter
Finland
Juhani Jaatinen
Senior Sales Manager,
DACH, Benelux, France, APAC
Venkatesh Ramachandra
Regional Sales Manager,
Middle East
