AHF
AHF 25A cabinet module
AHF 600A cabinet
AHF Active Harmonic Filter
The most advanced active harmonic filter on the market today utilising a three level inverter to provide rapid harmonic current correction. Available in 25, 35, 50, 60, 75, 100, 150 amps in both wall mount and cabinet mount modules, 400/480/690VAC three phase.
Product Resources
Compact High Performance
- Wall mount or cabinet mount in an ultra-compact design
- Modular design permits 600A within a single cabinet
- Can be incorporated into electrical switchboards
Optimal Harmonic Mitigation
- THDi <5%
- Selection of odd and even harmonics up to the 50th order
- Intelligent FFT for automatic correction of all 50 harmonic orders, plus manual selection of individual harmonic orders
- High efficiency >97%
- Reaction time <100us Response time of <10ms
- FFT, Intelligent FFT and Instantaneous Reactive control methods
3-Level Inverter Design
- Utilises 12 IGBTs and zero point clamping providing five switching level stages
- Reduced switching losses and permits higher switching speeds
- Lower harmonic content in the waveform provides high precision compensation
- Smaller and lighter filtering components
- Outstanding modularity, compact and very light weight
Protect Your System From Resonance
- The current spectrum is analysed at 1024 individual points per cycle
- System impedance at each individual harmonic is effectively ‘learnt’ by the AHF
- Compensation current is slowly increased with system stability closely monitored
- Should resonance be detected at any point the intelligent FFT can skip the problematic point
Balance Your Loads and Correct Your Power Factor Too
- In addition to harmonic mitigation the AHF can provide load current balancing
- Reactive power can be compensated for thus increasing power factor