NewTrend · active harmonic filter
Product overview
NewTrend Y-AHF is a modular active harmonic filter that detects load-current harmonics and injects compensating current in parallel with the load. The family includes a 25A, 220V L/N single-phase configuration; 7–200A three-phase configurations at 220V or 380V; and 100A three-phase configurations at 500V, 690V or 800V. The current values are rated harmonic-compensation currents, not feeder load-current ratings.
Technical selection summary
| Model | Y-AHF |
|---|---|
| Rated current meaning | Harmonic-compensation current, not feeder load-current rating |
| Single-phase configuration | AC 220V, 25A, L/N |
| Three-phase 220/380V currents | 7 / 15 / 25 / 50 / 75 / 100 / 150 / 200A |
| Three-phase 500/690/800V current | 100A |
| Grid arrangement | L/N only for 25A/220V; 3P3W / 3P4W for supported 220–690V three-phase; 800V 3P3W only |
| Operating voltage tolerance | 220/380/500V: -20% to +20%; 690V: -20% to +15%; 800V: -20%, 850V maximum |
| Frequency | 50/60Hz; operating range 45–63Hz |
| Harmonic compensation range | 2nd–50th order; individually adjustable compensation rate |
| Current harmonic compensation rate | ≥95%, catalogue value; final system THDi depends on installation |
| Unbalance compensation | Supported 220–690V three-phase configurations: residual unbalance ≤5%; unavailable for L/N and 800V |
| Full response time | <40ms |
| Overall efficiency | ≥97% |
| Switching frequency | 220/380V: 16kHz; 500/690/800V: 12.8kHz |
| Overload capability | 1.2× rated for 60 seconds |
| Current limiting | 100% current-limited output setting supported |
| Communication | 2× RS485; Wi-Fi supported |
| Mounting / cable entry | Wall-mounted: top entry; rack-mounted: rear entry |
| Protection rating | IP20; IP54 customization described separately in catalogue |
| Noise | L/N single-phase: ≤60dB; three-phase: ≤65dB |
| Cooling | Forced-air cooling, independent air duct |
| Ambient temperature | -10 to +50°C; above 40°C derating, catalogue capacity reduction ≤30% |
| Relative humidity | ≤90%, no condensation at monthly minimum 25°C |
| Altitude | <2000m; above 2000m derate per GB/T 3859.2 |
| Pollution degree | ≤Class III |
| Protection functions | Overload, software/hardware overcurrent, grid over-/undervoltage, voltage unbalance, power-supply failure, overtemperature, abnormal frequency and short circuit protection |
| Control platform | DSP + CPLD full-digital control, three-level topology |
| Parallel operation | Multiple modules supported |
Operation
- The filter connects in parallel with the load. It measures harmonic current and drives its IGBT power stage to generate compensating current of opposite phase.
- Individual compensation settings cover the 2nd through 50th harmonic orders. The catalogue compensation rate is not a guarantee of final system THDi.
- L/N single-phase and 800V three-phase versions provide harmonic compensation. The supported 220–690V three-phase versions also offer harmonic compensation plus three-phase unbalance correction.
Typical applications
- Feeders supplying variable-frequency drives, rectifiers and welding equipment
- Commercial buildings, data centres and facilities with UPS and IT loads
- Low-voltage renewable-energy and other nonlinear-load installations
View or download Y-AHF original catalogue, September 2026 (PDF)
Product reference images and drawings
Original AHF compensation-current, voltage and grid-configuration table
Photographs illustrate original AHF family wall-mounted and rack-mounted enclosures. The selected electrical configuration is determined by compensation current, voltage and grid arrangement; physical enclosure details depend on the exact version. Installation and wiring must be performed by qualified electricians.
