Powerful medium-voltage consumers, such as arc furnaces (EAF and LF) in the steel industry, require a lot of inductive reactive power. This is statically compensated for by the use of passive filters (suction circuits). In addition, these filters reduce selected voltage harmonics.

Open-ended high- and medium-voltage lines require capacitive reactive power. Passive inductive compensation systems (charging inductors) are used to avoid critical stationary overvoltage at the end of open-ended lines and/or to minimise capacitive reactive energy costs.

We dimension and customise these compensation systems depending on the project-related boundary conditions (energy supply contract, harmonic limit values, interference emissions, network short-circuit power, etc.). The desired functionality is demonstrated using simulation before the system is built.