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LV capacitor banks are available for 3 levels of harmonic withstand:
- Gh/Sn < 15%, "Classic" capacitor banks can be used
- 15% ≤ Gh/Sn < 25 %, the capacitor banks must be at least of the "Comfort" type (the "Classic" type is not allowed)
- Gh/Sn ≥ 25%, "Harmony" capacitor banks must be used (the "Classic" and "Comfort" types are not allowed).
If Gh/Sn exceeds 50%, a special study must be carried out to determine the type of capacitor bank because harmonic filtering must be installed.