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Active harmonic filters are advanced electronic devices designed to reduce harmonic distortion in electrical systems. They work by injecting counter-harmonic currents into the power system, effectively canceling out unwanted harmonics generated by non-linear loads such as variable frequency drives and rectifiers. These filters are typically made from high-performance semiconductor devices and control algorithms that monitor and adjust the harmonic compensation in real-time.
| Input voltage range | 380V to 690V |
| Harmonic order reduction | Up to the 50th harmonic |
| Rated power | 10 kVA to 5000 kVA |
| Control method | Real-time digital signal processing |
| Response time | Less than 1 millisecond |
| Operating temperature range | -10°C to 50°C |
When selecting an active harmonic filter, buyers should consider the specific harmonic distortion levels present in their systems and the required reduction levels. It's also important to specify the input voltage and power rating to ensure compatibility with existing equipment. Additionally, buyers may want to inquire about certifications and compliance with local electrical standards, as well as the response time and control methods used by the filter.
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Harmonic distortion refers to the presence of frequencies in the electrical system that are multiples of the fundamental frequency, which can cause inefficiencies and equipment damage.
If you have non-linear loads that cause significant harmonic distortion, or if your utility provider has imposed limits on harmonic levels, an active harmonic filter may be necessary.
Yes, active harmonic filters can be used alongside passive filters to enhance overall harmonic mitigation.
Active harmonic filters generally require minimal maintenance, but periodic inspections and software updates may be necessary.
Installation size depends on the rated power and design of the filter; consult the manufacturer for specific space requirements.
With proper maintenance, active harmonic filters can last 10 to 15 years.