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Harmonic Control
Active Power Filter / APF Harmonic Control
Active harmonic filtering equipment for low-voltage power systems, designed to reduce harmonic distortion and improve equipment reliability.



Product introduction
Overview
SERU / CE Series APF equipment collects system current signals in real time, separates harmonic components through its internal control circuit, and injects compensation current through IGBT power conversion. This helps reduce harmonic distortion and improve the operating reliability of connected equipment.
Applications
- Industrial power systems with nonlinear loads
- Facilities using variable-frequency drives, UPS systems or welding equipment
- Harmonic filtering in low-voltage distribution networks
- Harmonic distortion reduction
- Power quality improvement projects in 400 V systems
Key notes / features
- Suppresses 2nd to 50th harmonics in APF mode
- Dynamic and precise compensation based on harmonic content
- Overload protection including overcurrent, overvoltage and overtemperature protection
- Full response time <=10 ms
- Active loss <=1.5%, noise <=60 dB
- Fault alarm function with storage for up to 500 alarm records
Parameters / technical notes
- Operating temperature range: -10 degrees C to +50 degrees C; relative humidity <95%, non-condensing.
Project enquiry
Discuss active power filter / apf harmonic control requirements.
Include voltage level, load type, site condition and target power quality requirement when contacting SERU Electric.