Power Quality

Product Category

Power Quality


Category: Power Quality

Brief Introduction

Active Power Filter is a new electric power harmonic management dedicated device, which adopts modern power electronics technology and the digital Signal processing technique in the Digital Signal Processor (DSP). This Filter can overcome the traditional Filter, like LC Filter etc. Shortcomings of harmonic suppression and reactive power compensation, achieve dynamic tracing compensation and fill the harmonic, reactive power. The main function is managing the current harmonic, Series active Filter is mainly managing the voltage harmonic.

Active Power Filter is widely applied for industry, commerce and organizations in power networks. Example, electric system, water treatment equipment, petrochemical enterprise, huge mall and office building, precision electronic enterprise, airport/port power supply system, medical institutions. According to different application object, active filter can  ensure power supply reliability, reduce the interference and improve the product quality, increase equipment life, reduce equipment damage, and so on.

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Advantages and features:

1. >97% work efficiency, low loss and green energy saving.

2. Filter from 2th to 50th times harmonics simultaneously, or Selection of every harmonic from  2th to 50th times harmonics.

3. Reaction time<100μs, response time<10ms.

4. Active filter range is from 25A to 600A

5. Available in modular designs and complete cabinet type

6. Selection of specific times harmonic suppression.

7. Reactive power compensation and unbalanced load etc. three model.

8. Adopt 3DSP+CPLD full digital control mode, filter out harmonic precisely.

9. 3-level topology inverter circuit Fast Fourier Transform (FFT) and instantaneous reactive power two calculation methods.

10. Modular design, the system is stable, affordable – 40% ~ + 40% voltage fluctuation, better quality, reduce system’s single fault points, parallel flexibly, and to adapt to different working conditions

Functional Performance:

1. 3.8 inch fully functional LCD monitor and control system, enhanced version PC software.

2.Small compact, rack, wall mounting designs can adapt to different installing conditions, save space and protect environment.

Product ModelBK-25ABK-35ABK-50ABK-60ABK-100A
Basic parameterCompensation Capacity25A35A50A60A100A
Network ConfigurationThree phases and three lines (3P3W), three phases and four lines (3P4W)
Available Voltage Level380V-690V
Input Voltage Range (V)380V/690V-40%~+20% (three phase voltage)
Input Frequency Range (Hz)50/ 60HZ +/ -5%
Size (mm, W*D*H)260* 455* 200440* 630* 176440* 575* 232
Permitted parallel unitsNo limited
Net Weight (Kg)162840
Mounting TypeWall-mounted or rack-mounted Cabinet
Enter-wire WayTop Enter-wire Way/Back Enter-wire Way
Noise (dB)<54<56<58
Cooling MethodIntelligent air cooling


Intelligent air cooling


Intelligent air cooling


Running Temperature-5℃~+45℃
Storage Temperature-40℃~+70℃
Indoor Relative HumidityMaximum 95%, non-condensing
Altitude≤1500m, between 1,500m and 4,000m, altitude adds 100m while power reduce 1% according to national standard GB/T3859.2
ProtectionIP20,(other classes upon request)
MTBFMean Time Between Failures>100,000 hours
Ct connecting wire waySource side and load side
Key IndexHarmonic compensation range2nd~50th order (individual selectable)
Switching Frequency20KHz
Control method
Topological structure3phase
Response timeInstant response time<100us, full response time<10ms
Reactive power compensationYes
Compensated 3 phase unbalanced loadsYes
Overload ProtectionYes, automatic limited current, 100% rated output
Extended FunctionHuman-computer Interface3.8’’ LCD, 12 lines, and can display harmonic waves waveform
Communication ProtocolEthernet network, RS485, Modbus protocol, dry contacts
PC SoftwareYes, can set up all parameters
Fault RecordYes, 500 records