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The Three-phase Four-wire Rack Mount Active Harmonic Filter (AHF) provides comprehensive harmonic mitigation for four-wire power systems. Utilising a DSP+CPLD digital control core, this rack-mounted AHF effectively neutralises harmonic currents up to the 50th order, while also addressing three-phase imbalances. Its modular design allows for scalable solutions and simplified maintenance. Available in various current ratings (25A to 150A) and voltage levels (220V to 690V), the AHF offers flexible system integration. Forced air cooling ensures reliable operation even under demanding conditions. This Three-phase Four-wire Rack Mount Active Harmonic Filter guarantees power quality and system stability.
Model description:
| GY | AHF | 0.4 | 50A | / | 4L | R |
| Enterprise code | Active Harmonic Filter |
Voltage level 0.22:220V 0.4:380V±20% 0.5:500V±20% 0.69:690V±20% |
Rated Capacity（kvar） 25/50/75 /100/150A | 4L:Three-phase four-wire | R:Rack mount |
Features:
● Use DSP+CPLD all digital control core, three-level topology technology,
advanced harmonic detection algorithm and PWM control strategy to achieve
accurate compensation of harmonic current.
● Adopt modular design, which facilitates parallel connection of multiple
modules, takes up little space and is easy to maintain.
● The structural design of independent air ducts and independent warehouses
ensures the stable operation of the equipment.
● It can filter harmonics in a wide range of harmonics, from 2 to 50
harmonics, and solve the problem of three-phase unbalance at the same time.
● The harmonic filtering rate is high. If the capacity allows, the harmonic
current filtering rate can be as high as 95%. Set 100% current limiting
output to ensure long-term stable operation of the equipment.
Applications:
Three-phase Four-wire Rack Mount Active Harmonic Filters are crucial for maintaining clean power in various applications:
● Data Centres: Protecting sensitive equipment and ensuring uninterrupted
operation by eliminating harmonic distortion.
● Hospitals: Providing reliable power for critical medical equipment,
enhancing patient safety and system reliability.
● Industrial Environments: Improving the efficiency and lifespan of
three-phase machinery by reducing harmonic interference.
● Commercial Buildings: Maintaining power quality in buildings with complex
electrical systems, minimising downtime and equipment damage.
Three-phase Four-wire Rack Mount Active Harmonic Filters deliver robust and adaptable harmonic mitigation solutions for demanding four-wire applications.
Technical Parameters:
| 220V series | 380V series | 500V series | 690V series | ||
| Altitude | < 2000m, above 2000m, derate according to GB/T3859.2 | ||||
| Ambient temperature | -20～+50℃ | ||||
| Relative humidity | ≤90%, no condensation on the surface when the monthly minimum temperature is 25℃ | ||||
| Pollution level | Level III below | ||||
| Operating Voltage | AC220V±20% | AC380V±20% | AC500V±20% | AC690V±20% | |
| Working frequency | 50Hz±5% | ||||
| Compensation current | 25A | 25/50/75/100 /150A | 100A | 100A | |
| Grid structure | L/N | 3P3W/3P4W | 3P3W/3P4W | 3P3W/3P4W | |
|
Number of units connected in parallel |
Ulimited | ||||
| Overall machine efficiency | ≥97% | ||||
| Grid structure | 32kHz | 16kHz | 12.8kHz | 12.8kHz | |
| Compensation range | 2～50times, single compensation rate is adjustable | ||||
| Function selection | Reactive power | Reactive power, reactive power + asymmetry | |||
|
Reactive power compensation rate |
≥95% | >92% | |||
|
Neutral filtering capability |
Neutral line filtering capability is 3 times that of phase filtering capability | ||||
| Full response time | ＜10ms | ＜40ms | ＜40ms | ＜40ms | |
| Noise | ≤60dB | ≤60dB | ≤65dB | ≤65dB | |
| Control method | 2-way RS485 interface (supports GPRS/WIFI) | ||||
| Protection | Overload, software/hardware overcurrent, grid overvoltage and undervoltage, power failure, overtemperature, frequency abnormality protection, etc. | Overload, software/hardware overcurrent, grid overvoltage and undervoltage, grid voltage imbalance, power failure, overtemperature, frequency abnormality, short circuit protection, etc. | |||
| Installation method | Rack/wall-mounted | Rack | |||
| Incoming line | Back incoming（rack type）、 upper incoming（wall-mounted） | Back incoming line | |||
| Protection level | IP20 | ||||
Model& Specification:
| Models | ||||
|---|---|---|---|---|
| Model Number | Rated Current(A) | System voltage (V) | Dimensions (D*W*H) | Cooling method |
| GY APF-0.22-25A/2L-R/W | 25 | 220 | 220*330*160mm | Forced air cooling |
| GY APF-0.4-25A/4L-R/W | 25 | 380±20% | 460*490*89mm | |
| GY APF-0.4-50A/4L-R/W | 50 | 380±20% | 460*490*89mm | |
| GY APF-0.4-75A/4L-R/W | 75 | 380±20% | 500*510*190mm | |
| GY APF-0.4-100A/4L-R/W | 100 | 380±20% | 500*550*240mm | |
| GY APF-0.4-150A/4L-R/W | 150 | 380±20% | 500*550*240mm | |
| GY APF-0.5-100A/4L-R/W | 100 | 500±20% | 495*675*275mm | |
| GY APF-0.69-100A/4L-R/W | 100 | 690±20% | 495*675*275mm | |
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Zona industrială Wenzhou Bridge, orașul Beijingixiang, orașul Yueqing, provincia Zhejiang, China
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