Active Harmonic (Power) Filter

Features & Benefits

• Multifunctional: Harmonic, reactive power and imbalance compensation

• High harmonic filtering rate: Up to 98%

• Excellent reactive compensation: High speed, Precise (-0.99 ≤ PF ≤ 0.99), Step-less, Bi-directional (capacitive and inductance) compensation

• Excellent imbalance correction: Both negative and zero sequence, mitigates neutral current

• Wide input voltage & frequency range, adapts to tough electrical environments

• Low thermal loss (≤ 3% of rated APF kVA), efficiency ≥ 97%

• High stability: Infinite impedance to grid, avoids harmonic resonance problems

• Flexible application: Modular design, embedded in standard or customized cabinet

• Easy installation and maintenance: Plug-in installation for APF module replacement and expansion

• Wide capacity range: 50~525 A for a single cabinet, up 10 cabinets in parallel

• Environmental adaptability: -10~50°C temperature, compatible with diesel generator

• Complete protection: Grid Over/Under voltage, APF over current, over temperature, and more. All faults are recorded in the event log, which is convenient for failure analysis

Specifications

1. Rated Voltage : AC 400V, AC 690V
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3. Electrical Specification
4. Input Voltage Range
   AC 400V : AC 308V~480V
   AC 690V : AC 432V~880V
5. Electric Connection
   AC 400V : 3P3W/3P4W
   AC 690V : 3P3W
6. Rated Frequency : 50Hz (60Hz) +/- 10%
   Input Voltage THD Range : ≤15%
7. Rated Current per Module
   AC 400V : 50Amp, 75Amp, 100Amp
   AC 690V : 100Amp
8. Rated Current per Cabinet
   AC 400V : 50~525Amp (module combination)
   AC 690V : 100~500Amp (module combination)
9. Redundancy : Each module is an independent filtering system
10. Harmonic Elimination Range
    AC 400V : 2rd ~ 50th order (Selectable)
    AC 690V : 2rd ~ 31st order (Selectable)
11. Harmonic Filtering Degree
    0 ~ 100% programmable per harmonic in Ampere value
12. Harmonic Filtering Performance
    Filter up to 98% harmonics at rated load, THDv<3%, THDi<5% after filtering
13. Reactive Power Compensation Capability
    Both inductive and capacitive reactive power
14. Reactive Power Compensation Performance
    PF≥0.99 after compensation (if the APF capacity is sufficient)
15. Imbalance Correction Capability
    AC 400V : Mitigate negative and zero sequence
    AC 690V : Mitigate negative sequence
16. Full Response time : <20ms
    Instant Response time : <100us
    Thermal Loss : ≤3% of APF rated capacity (kVA)
    Output Current Limitation : Automatic (100% rated capacity)
17. Parallel Expansion(System)
    AC 400V : Up to 10 Racks(7 modules per cabinet)
    AC 690V : Up to 10 Racks(5 modules per cabinet)
18. MTBF : >100,000 hours
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20. Control Technology
21. Switching Frequency
    AC 400V - 50A, 75A : 60kHz
    AC 400V - 100A : 30kHz
    AC 690A : 20kHz
22. Controller : DSP control
    Communication : Modbus Protocol, RS232/485
    Monitoring : PQC Monitor Software (Optional)
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24. Physical Specification
25. IP Grade of Cabinet : IP20, IP30 or customization
    Cooling method : Intelligent forced air cooling
26. Noise Level
    AC 400V : < 65dB(A) @1m (Module)
    AC 690V : < 70dB(A) @1m (Module)
27. Dust Filter : Optional
    Dimension : Refer to APF Model table
    Weight : Refer to APF Model table
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29. Environmental Requirement
30. Ambient Temperature : -10~50 ℃
    Relative Humidity : 0~95%
31. Altitude
    ≤ 1000m Rated Capacity,
    1000-2000m (derating 1% per 100m)
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33. All specifications are subject to change without prior notice.