Active Harmonic (Power) Filter

Features & Benefits

• Multifunctional: Harmonic, reactive power and imbalance compensation
• Harmonic Elimination Range: 2^nd~50^th order (Selectable)
• 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 and high efficiency
• 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: 30~750 A for a single cabinet, up 10 cabinets in parallel
• Environmental adaptability: -10~55°C ambient 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
• Waveform display function on HMI: Display waveform of input Voltage, Grid current, Load current and APF current
• Display Harmonic current Histogram on HMI: Grid harmonic current and load harmonic current
• CTs’ reversal auto correction can be setted on HMI, support grid side or load side current detection

Specifications

Mixed Fixed Type Products

1. Rated Voltage: AC 208 V, AC 400 V, AC 690 V

2. ---

3. Electrical Specification
4. Input Voltage Range
   AC 208 V: AC 166~250 V, AC 166~250 V
   AC 400 V: AC 308~456 V, AC 308~480 V
   AC 690 V: AC 384~880 V
5. Electric Connection
   AC 208 V: 3P4W, 3P3W
   AC 400 V: 3P4W, 3P3W
   AC 690 V: 3P3W
6. Rated Current per Module
   AC 208 V: 50 A, 75 A, 100 A, 150 A
   AC 400 V: 30 A, 50 A, 75 A, 100 A, 150 A
   AC 690 V: 100 A
7. Rated Current per Cabinet
   AC 208 V: 50~750 A (Module combination)
   AC 400 V: 30~750 A (Module combination)
   AC 690 V: 100~500 A (Module combination)
8. Rated Frequency: 50(60) Hz ± 10%
9. Input Voltage THD Range: ≤ 15%
10. Redundancy: Each module is an independent filtering system
11. Harmonic Elimination Range: 2^nd~50^th order (Selectable)
12. Harmonic Filtering Degree: 0~100% programmable per harmonic in Ampere value
13. Harmonic Filtering Performance: Filter up to 98% harmonics at rated load, THDv < 3%, THDi < 5% after filtering
    (Precondition: The grid background THDv shall be less than 1% under no-load condition.)
14. Reactive Power Compensation Capability: Both inductive and capacitive reactive power
15. Reactive Power Compensation Performance: Cosφ ≥ 0.99 after compensation (If the APF capacity is sufficient)
16. Imbalance Correction Capability: Mitigate negative and zero sequence
17. Full Response Time: < 10 ms
18. Instant Response Time: < 100 us
19. Thermal Loss
    AC 208 V: ≤ 5% of APF rated capacity
    AC 400/690 V: ≤ 3% of APF rated capacity
20. Output Current Limitation: Automatic (100% rated capacity)
21. Parallel Expansion (System): Up to 10 Racks (7 modules per cabinet)
22. MTBF: > 100,000 hours

23. ---

24. Control Technology
25. Switching Frequency: 30 kHz
26. Controller: DSP + FPGA
27. CT Position: Grid side or Load side
28. Waveform Display: Input Voltage waveform, Grid current waveform, Load current waveform and APF current waveform
29. Harmonic Current Histogram Display: Grid harmonic current and load harmonic current
30. Communication: Modbus RTU (RS-485), Modbus TCP/IP (Ethernet)

31. ---

32. Physical Specification
33. IP Grade of Cabinet: IP20, IP30, IP54, IP55 or customization
34. Cooling Method: Intelligent forced air cooling
35. Noise Level
    AC 208 V/ AC 400 V: < 65 dB(A) @1 m (Module)
    AC 690 V: < 70 dB(A) @1 m (Module)
36. Dust Filter: Optional
37. Dimension: Please download the brochure and refer to APF model table
38. Weight: Please download the brochure and refer to APF model table

39. ---

40. Environmental Requirement
41. Ambient Temperature: -10~50°C 
42. Relative Humidity: 0~95% (No condensation)
43. Altitude: ≤ 1000 m (Rated capacity), 1000-3000 m (De-rating 1% per 100 m)

Rear/Front Connection Type Products

1. Rated Voltage: AC 400 V, AC 690 V

2. ---

3. Electrical Specification
4. Input Voltage Range
   AC 400 V: AC 308~456 V, AC 308~480 V
   AC 690 V: AC 384~880 V
5. Electric Connection
   AC 400 V: 3P4W, 3P3W
   AC 690 V: 3P3W
6. Rated Frequency: 50(60) Hz ± 10%
7. Input Voltage THD Range: ≤ 15%
8. Rated Current per Module
   AC 400 V: 50 A, 75 A, 100 A
   AC 690 V: 100 A
9. Rated Current per Cabinet
   AC 400 V: 50~700 A (Module combination)
   AC 690 V: 100~500 A (Module combination)
10. Redundancy: Each module is an independent filtering system
11. Harmonic Elimination Range
    AC 400 V: 2^nd~50^th order (Selectable)
    AC 690 V: 2^nd~31^st order (Selectable)
12. Harmonic Filtering Degree
    0~100% programmable per harmonic in Ampere value
13. Harmonic Filtering Performance: Filter up to 98% harmonics at rated load, THDv < 3%, THDi < 5% after filtering
14. Reactive Power Compensation Capability: Both inductive and capacitive reactive power
15. Reactive Power Compensation Performance: PF ≥ 0.99 after compensation (if the APF capacity is sufficient)
16. Imbalance Correction Capability
    AC 400 V: Mitigate negative and zero sequence
    AC 690 V: Mitigate negative sequence
17. Full Response Time: < 20 ms
18. Instant Response Time: < 100 us
19. Thermal Loss: ≤ 3% of APF rated capacity (kVA)
20. Output Current Limitation: Automatic (100% rated capacity)
21. Parallel Expansion (System): Up to 10 Racks (7 modules per cabinet)
22. MTBF: > 100,000 hours

23. ---

24. Control Technology
25. Switching Frequency
    AC 400 V : 60 kHz, 30 kHz
    AC 690 V: 30 kHz
26. Controller: DSP control
27. Communication: Modbus RTU (RS-485), Modbus TCP/IP (Ethernet)

28. ---

29. Physical Specification
30. IP Grade of Cabinet: IP20, IP30, IP42, IP54 or customization
31. Cooling Method: Intelligent forced air cooling
32. Noise Level
    AC 400 V: < 65 dB(A) @1 m (Module)
    AC 690 V: < 70 dB(A) @1 m (Module)
33. Dust Filter: Optional
34. Dimension: Please download the brochure and refer to APF model table
35. Weight: Please download the brochure and refer to APF model table

36. ---

37. Environmental Requirement
38. Ambient Temperature
    Rear connection type: -10~50°C with 100% capacity, de-rating running from 50~55°C
    Front connection type: -25~40°C with 100% capacity, de-rating running from 40~55°C
39. Relative Humidity: 0~95% (No condensation)
40. Altitude: ≤ 1000 m (Rated capacity), 1000-2000 m (De-rating 1% per 100 m)

41. ---

42. 
    All specifications are subject to change without prior notice.