Aktiver Harmonischer Filter P300

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The Active Harmonic Filter ADF P300/P300N is the ideal active filter for small and medium-sized commercial and industrial loads. It is the best choice for most applications because it is such a flexible active filter.

With the ADF P300, the state-of-the-art performance of our active filter technology comes encased in a compact cabinet. Each filter is delivered with 90 – 450 A optimization power and the modular design makes it easy and convenient to add future upgrades. The modularity also ensures superior scalability – up to 15 units can be used in parallel.

The ADF P300 is compatible with all three-phase low voltage applications. Beyond harmonics and reactive compensation, the P300 can also be used for flicker control, harmonics with a sensorless operation and load balancing. The P300 can also be tailored to unique applications requiring special optimization.

Technical data

  • Rated Power: 83 kVA – 323 kVA
  • Compensation current: 120 – 360 Α
  • Nominal Voltage AC: 480 V (208 – 480 V) &  690 V (480 – 690 V)
  • Nominal Frequency: 50 / 60Hz ± 2%
  • Number of phases: 3 phase 3 or 4 wire
  • Rate of harmonic reduction: > 98%
  • Current compensation of cosφ: up to 1.0
  • Flickering
  • Expandability: Up to 15 units can be used in parallel
  • Operating Temperature: 50°C (up to 40°C without derating)
  • Maximum altitude: 1000 m
  • Response Time: <1 msec
  • Protection class: ΙΡ 21, ΙΡ 43, (IP 54 to be delivered)


  • Harmonics and reactive power compensation
  • Voltage Control (no CT required)
  • Voltage range up to 690 V
  • Air cooling and water cooling
  • Digital control with WUI (Web User Interface)
  • Low losses
  • Space efficient


  • Industry
  • Shipping
  • Power plants
  • Hospitals
  • Offices
  • Shopping centers
  • Lighting
  • UPS
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