4 Advice to Choose a Sna-Ahf Active Harmonic Filter

Main points to know: 

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-If you have THD above 4% then you need to consider using a line Reactor 

- Reactors need to be selected based on the peak Harmonic Frequencies. the intention is to shift the fundamental harmonic caused by the capacitors, so as to not increase the nominal harmonics on site 

- Reactors must be placed in line with the capacitors if you wish to reduce THD

How to determine if Filter Reactor is required?

This question has no one exact suggestion. Depends on a few factor decision can be different. Modern networks are dirty of some harmonics and other influences. My recommendation is to use detuned harmonics capacitor banks even where harmonics levels are not so high.

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Previous recommendations are only for orientation. They are not rules for all cases.

- If Harmonics remain an issue then we suggest to consider Automatic  Harmonic Filters (AHF) Rather than a capacitor based system.

Selection of Filter Reactors

Most Common Detuning factor is 7%, then 14% then 11% which suit almost all applications. The reactor can also be custom made to suit your requirements.

Electronicon Reactor Selection Guide

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For more Sna-Ahf Active Harmonic Filterinformation, please contact us. We will provide professional answers.