Active Harmonic Filters


Active Harmonic Filters (AHF) device can eliminates multiple and higher harmonics without causing resonance, improve power quality and reduce power loss. AHF device prolongs service life of electrical equipment and improves the operation efficiency and output of equipment.

AHF device can be used with existing Power Distribution and PV Systems.



- Harmonics Compensation Capability Compensates 2nd to 50th harmonic order or simultaneous compensation of all

  50 harmonic orders.

- Compensates both inductive and capacitive loads Corrects lagging and leading power factor.

- Algorithm Intelligence technology integrates both FFT and Dynamic Compensation Modes, customised to client’s


- Reducing Harmonic Distortion Rate and extending the life of transformer.

- Modular design for easy operation, maintenance and replacement. 


The following information relates to the 25A - 150A Unit. Please note that in cabinet configuration, up to 600A is possible in a single cabinet.  

Product Code  

25-75 A Unit

100-150A Unit

 Rated Compensation Current



 Rated Voltage

380VAC -40% to 20% (690V also available)

 Rated Current

25A-150A in wall-mount configuration

100A-600A in rack/cabinet configuration

 Frequency Range

50Hz (45Hz-63Hz Range)

Harmonics Compensation Capability


 Full Response Time/ Reaction Time


Communication Interface

RS485, Ethernet

 Communication Protocol

Modbus, TCP/IP

Operation Temperature Range

-5°C to 40°C

Enclosure IP Rating

IP20 (IP31 / IP54 are available with cabinet configuration)

 Enclosure IP Rating

IP20 (other IP classes are available with

cabinet configuration)

 Operational Altitude Limit

1,500m, 1% power reduction for each additional 100m, between 1500m and 4000m

Wall-Mount Dimensions (mm)

440W x 150D x 470H

505W x 286D x 557H

Cabinet Dimensions (mm)

1000W x 600D x 2200H

600W x 1000D x 2200H