Method for designing a power factor controller apparatus

A method for designing a power factor controller apparatus for a power distribution network comprising the phases of: a) (reference 1> - configuring, in a predefined computerised support, an interactive computerised environment (reference 2) dedicated to the management of data and/or programming commands; b) (reference 3> - acquiring, in said interactive computerised environment (2), data related to said power factor controller apparatus; c) (reference 4> - acquiring and/or calculating, in said interactive computerised environment, data related to the power distribution network wherein said power factor controller apparatus is installed; d) (reference 5> - based on said phase c), calculating, in said interactive computerised environment, the optimal chasing of a power factor target for said power factor controller apparatus.