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Active Harmonic Filters

Shaping electrical power!

The new modular Schaffner ECOsine™ series offers fitted and economical solutions for the most demanding harmonic mitigation challenges with any kind of non-linear load involved. Ecosine active sync filter series provides a solution concept which is modular, compact and can be used as stand-alone modules or as system solution. The optional sync module offers a smart load Management of the filter’s usage and allows redundancy which guarantees a smart power quality solution in the era of Industry 4.0. We provide active harmonic filters with excellent performance in solving power quality problems focusing on customer needs and application demands for cleaner and smarter energy. 

Active Harmonic Filters

Schaffner ECOsine™ benefits and field of applictaion

Schaffner ECOsine™ active harmonic filters provide the followings: 

  • Most effective harmonic mitigation up to the 50th order, parameter setting for even and odd harmonics
  • Compact active harmonic filter for 3-phase loads with and without neutral wire
  • <5% THDi achievable even on most complex mixed loads and changing load profiles
  • New modular desig modular design with intelligent system approach offering tailored solutions for different applications and customers
  • Long-term savings in the area of system operation and maintenance 
  • 3-Level IGBT inverter topology for reduced power losses
  • Extended temperature range of modules up to 50°C
  • Ultra-fast and dynamic reactive power compensation (inductive and capacitive)
  • Load balancing and unloading of neutral wires
  • Flicker compensation (if caused by reactive power)
  • Compliance with IEEE 519, EN 61000-3-12 and other power quality standards  

Typical applications:

  • Building technology
  • Automation industry
  • Data centers
  • Elevators
  • Water/waste water treatment plants
  • Oil and gas exploration
  • Welding equipment
  • Steel industry
  • Coolers and pumps
  • Battery chargers
  • HVAC installations
  • Paper mills
  • Tunnel ventilation
  •  Machines and Automation

Technical specifications

Number of phases (system input)

3-phase, 3-wire or 3-phase 4-wire
Mains frequency 
50/60 Hz+/- 3 Hz
Mains voltage

3-wire: 200 VAC - 480 VAC+/-10%
4-wire: 200 VAC - 415 VAC +/-10%
Inverter topology 3-level NPC topology, IGBT

Switching frequency 
16 kHz
Response time< 100 μs
Harmonic mitigation performanceup to the 50th harmoninc
Total harmonic current distortion THDi< 5%
Power Factor Correction cosφ= -0,7 ... 1 ... 0,7
Dimensions of a single unit

440 mm x 420 mm x 222 mm (w x d x h)

Rated phase mitigation current 60 Arms
Rated neutral conductor mitigation current180 Apk
Overload capability (Amp for 10 ms)150 A
Current transformer placementMains side or load side
Current transformer ratio50...50000:5A or 50...50000:1A
MountingWall-mounting (book or flat mounting)
Weight of a single unit44 kg
Cooling typeAir cooling
Communication interfaceEthernet TCP/IP, Modbus RTU RS485
Digital I/O2 DIO + 2 DIO
Ambient temperature of power modules0...50C full performance up to 55C with derating of 3% per Kelvin 
Power losses

<1100W under full mitigation performance (<2,6%)

<970W in typical operation (<2,3%) 

Protection classIP 20 / IP 21
Noise level<56 to 63 dB A (depending on load situation)
Self-protection Yes
Overheat protectionYes
Overvoltage and undervoltage protectionYes
Recommended fuse protection100A, type gL or gG 
Earthing systemTT, TN-C, TN-S, TN-C-S, IT, corner grounded delta
Altitude<1000m without derating, up to 4000m with derating 1% / 100 m
Ambient conditions

Pollution degree 2

Relative humidity < 95% non-condensing, 3K3

Temperature: Storage 55C, 1K3, 1K4, Transportation -25C to 75C, 2K3

ApprovalCE, RoHS, cUL
Design standards

IEC 61000-4-2, 4-4, 4-5, 4-6

EN 61000-3-11, 3-12

EN 61000-6-2

EN 55011

EN 62477-1

EN 61800-3

More pictures of the product

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