Custom Harmonic Filter Inductors & Attenuation Systems
At AFP Transformers Corp., we engineer and manufacture custom high-performance harmonic mitigation solutions tailored for demanding industrial power infrastructure worldwide. Modern non-linear electrical loads—such as Variable Frequency Drives (VFDs), uninterruptible power supplies (UPS), arc furnaces, and heavy industrial automation—generate dangerous current harmonics that lead to equipment overheating, reduced system efficiency, voltage distortion, and premature capacitor failure.
Our custom harmonic filter inductors (reactors) are specifically engineered for integration with power factor correction capacitor banks to create tuned passive harmonic filters. Operating from 600 V low-voltage classes up to 34.5 kV medium-voltage distribution levels, AFP filter inductors suppress unwanted harmonic frequencies (including 5th, 7th, 11th, and 13th harmonics), ensuring full compliance with international power quality standards such as IEEE 519 and IEC 61000.
Backed by over three decades of custom magnetics expertise in Edison, New Jersey, AFP engineers collaborate directly with global OEMs, switchgear builders, and utility operators to design iron core, ferrite core, or air-core inductors matched to precise reactive power ratings (kVAR), current limits, and ambient operational constraints.
Harmonic Mitigation Inductor Configurations
Technical Specifications & Manufacturing Capabilities
- Voltage, Current, Watts, VARs, VA, Power Factor, and Harmonic Spectrum Attenuation
- Applied Potential (HiPot) Testing up to 100 kV AC RMS
- Basic Impulse Level (BIL) Capability up to 300 kV
- Partial Discharge (PD) Testing in excess of 70 kV induced potential
- Customer-Specified Factory Acceptance Testing (FAT) available upon request
Applications & Industry Standards Compliance
Power Quality & Utilities: Automatic Power Factor Correction (PFC) Panel Builders, Power Conditioning Equipment, Data Center Power Distribution Units (PDU), Uninterruptible Power Supply (UPS) Modules.
Heavy Industrial & Heating: Electric Arc Furnaces, Induction Heating Power Supplies, RF/Microwave Equipment, Chemical Processing.
Infrastructure & OEM Equipment: Wastewater Treatment Facilities, Semiconductor Machinery, Mining Equipment, Renewable Energy Inverter Interconnects.
UL 508 (Industrial Control Equipment) | UL 506 (Specialty Transformers)
UL 1561 (General Purpose 600V Transformers) | UL 1562 (Medium Voltage up to 34.5kV)
NEMA ST 20, NEMA TR1, NEMA ICS 2
IEC 61558 (Low Voltage Power Transformers & Reactors)
CE Marking & Certification Compliance | Marine Certifications: ABS (American Bureau of Shipping), DNV (Det Norske Veritas)
Need Custom Harmonic Mitigation Engineering?
Speak directly with an experienced AFP applications engineer to formulate custom detuned inductors, power quality reactors, or review IEEE 519 compliance requirements for your facility.