SET-AHF Active Harmonic Filter — 3-level topology, THDi ≤ 5%, ≤ 5 ms response, 25 A to 800 A range. CE / ISO 9001 / IEEE 519 compliant.
Active harmonic filter by SET provides fast, modular harmonic compensation for 220–480V industrial distribution systems. This rack-mounted active harmonic filter reduces current distortion, stabilizes sensitive equipment and improves power quality. See the IEEE power-quality standards for reference.
Rack mounted active harmonic filter from SET is based on 3-level topology and designed to eliminate harmonic oscillations and reduce costs. AHF is a versatile solution, easily tailored to deliver power factor improvement, voltage variation control, flicker mitigation and load balancing functionality — significantly improving power quality in your networks while reducing harmonic pollution.
THDi ≤ 5% after compensation, fully compliant with IEEE 519 and IEC 61000 standards. Eliminates all odd-order harmonics from 2nd through 51st simultaneously.
Initial response ≤ 50 μs, full compensation reached within 5 ms — outperforms traditional passive filters and capacitor banks in dynamic load environments.
Single unit delivers harmonic filtering + reactive power compensation (PF −1.0 to +1.0) + three-phase current unbalance correction — saves cabinet space and CAPEX.
Dual-core architecture executes intelligent FFT harmonic detection with adaptive control, ensuring stable performance under rapid load changes.
Parallel operation up to 8 units; hot-swappable modules; supports gradual capacity expansion as load grows.
Each harmonic order (5th, 7th, 11th, 13th…) can be individually enabled/disabled and priority-weighted via HMI — optimize efficiency for your specific load profile.
220 V / 400 V / 480 V / 690 V rated; 3P3W and 3P4W both supported; neutral-line current compensation available for 3P4W systems.
110% continuous, 150% for 60 s — handles inrush and short-term surges without derating.
Total system loss ≤ 2.5% of rated capacity; PWM smart-cooling reduces fan noise below 60 dB.
Over-voltage, under-voltage, over-current, over-temperature, short-circuit, IGBT desaturation, ground fault — all with auto-recovery.
Modbus RTU / RS485 / CAN bus standard; Ethernet / Profibus / APP monitoring optional — integrates into any SCADA or BMS.
CE, ISO 9001:2015, CNAS, UDEM certified; complies with IEEE 519, IEC 61000, GB/T 14549-93.
> 100,000 hours design life; extensive burn-in and type-testing at Elumotive Shanghai facility.
24-hour domestic response / 48-hour overseas response; on-site commissioning available; spare parts stocked in major logistics hubs.
| Parameter | Value |
|---|---|
| Rated voltage | 220 V / 400 V / 480 V / 690 V (3P3W or 3P4W) |
| Rated compensation current | 25 A / 50 A / 75 A / 100 A / 150 A / 200 A / 300 A / 400 A / 600 A / 800 A |
| Grid frequency | 50 / 60 Hz ±5% |
| Circuit topology | Three-level NPC (IGBT) |
| Harmonic compensation order | 2nd – 51st odd-order harmonics, individually selectable |
| Harmonic elimination rate | ≥ 97% |
| THDi after filtering | ≤ 5% |
| Reactive power compensation | Power factor adjustable −1.0 to +1.0 |
| Three-phase unbalance correction | ≤ 5% residual current |
| Switching frequency | 25.6 kHz |
| Initial response time | ≤ 50 μs |
| Overall response time | ≤ 5 ms |
| System loss | ≤ 2.5% of rated capacity |
| Overload capability | 110% continuous, 150% for 60 s |
| Parameter | Value |
|---|---|
| Controller | DSP + FPGA dual-core digital |
| Control algorithm | Intelligent FFT, adaptive control |
| HMI | 7-inch color touch TFT LCD, real-time harmonic spectrum |
| Communication (standard) | Modbus RTU / RS485 / CAN bus |
| Communication (optional) | Ethernet / Profibus / APP / SCADA |
| Data logging | On-board memory, 1-year event log |
| Remote monitoring | Web dashboard, mobile APP (iOS/Android) |
| Parameter | Value |
|---|---|
| Enclosure color | RAL 7035 (light gray) or black |
| Cooling | Intelligent PWM forced-air cooling |
| Noise level | < 60 dB @ 1 m |
| Ingress protection | IP20 (indoor); IP54 (outdoor containerized option) |
| Ambient temperature | −20 °C to +55 °C |
| Relative humidity | ≤ 95% non-condensing |
| Installation altitude | ≤ 2000 m rated; derating 1% per 100 m above |
| Mounting | Wall-mount / floor-standing cabinet / 19-inch rack |
| Form factors | Wall-mount modules 25–150 A · Floor cabinets 100–800 A |
| Weight | 25 kg (75 A wall-mount) — 320 kg (800 A cabinet) |
| Parameter | Value |
|---|---|
| Compliance standards | IEEE 519, IEC 61000, GB/T 14549-93 |
| Product certifications | CE Mark, ISO 9001:2015, CNAS, UDEM |
| Design standard | IEC 62477-1 (safety), IEC 61439 (LV switchgear) |
| EMC | EN 61000-6-2 (immunity), EN 61000-6-4 (emission) |
Elumotive SET-AHF is deployed in the most demanding industrial and commercial power environments worldwide, where harmonic distortion causes energy waste, equipment overheating and utility-bill penalties.
Arc furnaces, rolling mills, electric-arc welding
Solar PV plants, wind farms, energy storage
UPS harmonic filtering for 99.9%+ uptime
Clean power for MRI, CT and life-critical equipment
Office towers, malls, hotels — power factor & energy savings
Traction substations, regenerative braking energy management
DC fast-charging stations, EV manufacturing lines
Voltage stability for precision lithography equipment
Cranes, conveyors, hoists with heavy VFD load
Request the latest technical documentation, drawings and case studies via the contact form. Our engineers will send you the requested PDF files within one working day.
Need custom documentation? Contact sales@elumotive.com for tender packages, quality certificates, factory audit reports or third-party test reports (KEMA / CESI etc.).
