Power Quality Products

PQE aHF-W/400 for wall mounting

Compact SiC active filter for commercial use

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PQE aHF-W/400

The PQE aHF-W active filters with SiC technology are the most innovative products in the field of power quality. The use of silicon carbide as a power semiconductor leads to higher efficiencies, lower losses, and more compact designs. The PQE aHF-W can filter harmonics up to the 50th harmonic, compensate for inductive and capacitive reactive power, and balance phase imbalances.

Fast response times of 50µs, extremely low losses of approximately 1 % of the rated power and high clock frequencies of 40..95 kHz make the PQE aHF-W ideal for use in modern installations.

Functions

  • Current-controlled harmonic filtering
  • Voltage-controlled harmonic filtering
  • Dynamic reactive power compensation
  • Load balancing
  • Smart FFT for autotuning

Technical data

  • Rated voltage 400 V
  • Filter currents up to 100 A
  • Protection class IP20
  • 4-wire connection

Areas of application

  • Business
  • Data centers
  • Light industry
  • Infrastructure
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Advantages of the PQE aHF-W/400 active filter

A trouble-free power grid is the basis for a safe and efficient energy supply in commercial and industrial applications. The PQE aHF-W/400 active filter ensures a significant reduction in grid disturbances and offers numerous advantages:
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Effective harmonic filtering – Filters harmonics up to the 50th harmonic for clean power quality.

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Reduced energy loss – Thanks to modern SiC technology with extremely low losses of only approx. 1 % of the rated power.

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Automatic adjustment – Smart FFT for autotuning that adapts to changing grid conditions.

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Optimal grid stability – Dynamic reactive power compensation and phase unbalance compensation.

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Space-saving design – Compact design for wall mounting – ideal for modern installations with limited space.

How the PQE aHF-W/400 active filter works

The PQE aHF-W/400 is a high-performance SiC active filter that detects and compensates for grid disturbances in real time. It combines current- and voltage-controlled harmonic filtering to sustainably improve power quality.

With an extremely short response time of just 50µs, the filter effectively eliminates harmonics, reactive power, and asymmetries caused by nonlinear loads. At the same time, it intelligently adapts to changing grid conditions with Smart-FFT autotuning.

Thanks to its compact design, the PQE aHF-W/400 is ideal for installations with limited space, while the robust IP20 protection class ensures safe use in industrial environments.

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