Our power factor correction systems are designed and dimensioned to comply with EN 60439-1 (date of publication 01 January 2005). They are rated to withstand overloading due to harmonic voltage distortion up to 5% of the nominal fundamental voltage for each of the 3rd, 5th, 7th, 11th and 13th harmonics. This must be based on the level of each harmonic at the point of common connection before installation of the new power factor correction system or systems!
If the harmonic levels are higher than this, we can also offer more rugged power factor correction systems to suit demanding duties of this type. Please let us know your requirements; we always have a solution for you.