Active Harmonic Filters (AHF)

Ablerex

Also known as active power filters (APFs), AHFs are designed to cancel harmonic currents. As a result, AHFs improve power quality, reduce equipment heating, and avoid unwanted torque pulses in motors and malfunctions in variable speed drives.

We recommend and sell the Enersine range of active power filters manufactured by Ablerex.

Check our range of AHF products below or call us today for expert advice from qualified engineers.

What causes harmonic currents?

Harmonic currents are generated by non-linear loads, which are increasingly present in industrial, commercial and residential installations, including:

  • Industrial equipment, such as welding machines, arc and induction furnaces and battery chargers
  • Variable speed drives for AC and DC motors
  • Uninterruptible power supplies (UPS)
  • Office equipment, such as PCs, printers and servers
  • Household appliances ,such as TVs, microwave ovens, fluorescent lighting and light dimmers

Why are they a problem?

Current harmonics distortions cause:

  • Distorted voltage/current in distribution networks
  • Decrease utility/generator efficiency
  • Possible damage to capacitor banks due to resonance
  • Overheating to electronics systems causing component failure
  • Overheating to neutral conductor *
  • Overheating to transformer*
  • Nuisance tripping of breakers & protective relays*

* Caused by 3rd harmonics in neutral conductor – a very common problem.

 

Enersine Active Power Filter range

APF Enersine ESD34

 Modular digital filters

 

Wall mounted design - 30A or 60A systems

Rack mounted design - with steps from 30A to 240A in one enclosure

Parallel connection available up to 960A

True harmonic solution

Modular and easy to extend

Three-level technology

Space-saving high power density design

Hot-scalable power modules

Close/open loop control

Compensate up to 51st harmonics

Power factor correction

Correct unbalance three phase utility

Advanced operation interface with 7”colorful LCD touchscreen

 

Standalone APF

 Standalone digital filters

Available in 100A and 150A

True harmonic solution

IP00 open chassis design

Compact size and easy to install in power distribution panel

Close/open loop control

Compensate up to 51st harmonics

Power factor correction

Correct unbalance three phase utility

Advanced operation interface with 7”colorful LCD touchscreen

 

 

Download brochures and data sheets here