Lenze Inverter EMC - Manual (Page 19)

Compensation equipment
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EDBEMV EN 1.3
8 Compensation equipment
Interactions with compensation equipment
Controllers only consume a very small fundamental reactive power from the AC mains. Therefore
compensation is not necessary.
   
Stop!
Where higher-power machines in old industrial systems are updated with standard
inverters, steps must be taken to ensure that the old compensation systems are
equipped with chokes or replaced by new ones (with chokes).
The harmonic currents generated by the inverter (specifically 5 and 7) may cause
the capacitor currents to assume values that would very quickly destroy the
capacitor batteries, leading to a complete compensation breakdown.
Please consult the supplier of the compensation equipment in due time.
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