AMP Magnetics is an independent manufacturer’s representative for specialized power-quality manufacturers delivering passive and active harmonic mitigation solutions.
Six-pulse variable frequency drives, induction heaters, and high-capacity battery chargers inject severe harmonic currents into industrial distribution systems. Left unchecked, harmonic currents distort the voltage sine wave, overheat upstream transformers, cause power factor capacitor failures, and trigger utility demand penalties.
As a manufacturer’s representative, AMP Magnetics connects your engineering team with domestic plants producing high-efficiency tuned passive harmonic filters and active harmonic filter solutions. These units eliminate the 5th, 7th, 11th, and 13th harmonic orders right at the source.
Depending on your load diversity, available panel space, and budget, our represented principals build solutions across both primary topologies:
| Mitigation Technology | Typical Performance | Load Compatibility | Ideal Application Profile |
|---|---|---|---|
| Tuned Passive Harmonic Filters | < 5% or < 8% THD-i at full load | Individual VFDs or dedicated 6-pulse drives | Pumping stations, fan drives, wastewater treatment, and HVAC chillers with steady operating loads. High reliability, zero electronic maintenance, lowest initial capital cost. |
| Active Harmonic Filters (AHF) | < 3% - 5% THD-i dynamic tracking | Centralized switchboards, multi-drive lineups, mixed non-linear loads | Industrial automation cells, data centers, and facilities where drives cycle unpredictably. Dynamically injects counter-phase harmonic current and provides stepless power factor correction. |
| 12-Pulse / 18-Pulse Phase-Shifting Transformers | < 8% (12-pulse) / < 5% (18-pulse) | Multi-pulse drive rectifiers | Critical heavy industrial drives (> 500 HP), extruders, and mine hoists. Purely magnetic phase cancellation with robust electrical isolation. |
Our represented passive filters feature optional contactor disconnect kits to drop the capacitive circuit at light loads, preventing voltage rise and generator AVR instability during emergency backup operation.
In addition to filtering harmonic currents, the tuned trap network supplies fundamental reactive power, raising the operating power factor to > 0.95 across normal operating loads without causing leading power factor penalties.
Heavy-duty magnetic coils wound with Class 220°C insulation systems and integrated thermal switches protect the unit against prolonged severe system overvoltages and resonance events.
Send your single-line diagram, utility Point of Common Coupling (PCC) short-circuit ratio, and drive schedule for a compliance review and factory pricing.
Request Harmonic Filter Quote