EMIS harmonic filter improves power quality and protects connected equipment
EMIS has announced the availability of the TPQH3411 passive harmonic filter designed and manufactured to provide a cost-effective solution for harmonic mitigation in power systems by maintaining THID in compliance with the current and voltage requirements of IEEE 519.
Three-phase passive harmonic filters are used to minimise harmonic distortion, especially in installations with high levels of non-linear loads such as variable frequency drives (VFDs), UPS units and rectifiers. They function by using passive components resistors, inductors and capacitors in a filter network to suppress unwanted harmonic currents and voltages.
They are typically tuned to specific harmonic orders (e.g.,3rd, 5th, 7th, 11th….), providing low-impedance paths at those frequencies to effectively divert harmonic content. The capacitive elements in these filters offer reactive power compensation, enhancing the system’s power factor.
Passive harmonic filters are recognised for their simple and robust design, making them a popular and cost-effective solution for mitigating harmonics in power systems. In addition to assisting with compliance to harmonic distortion limits set by standards such as IEEE 519, the filters also help reduce overheating, mechanical stress, and vibrations in motors and transformers caused by harmonic distortion.
Applications for the EMIS TPQH3411 passive harmonic filter include:
Variable Frequency Drives (VFDs), induction furnaces, robotics, conveyors.
High-power pumps, blowers, motor drives
UPS systems and switch-mode power supplies.
Crushers, rolling mills, large motors.
Compressors, offshore drilling systems, pumps
Elevators, lighting with electronic ballasts
Inverter-based wind/solar systems
Cement, Paper, and Steel Industries
