The operation of variable-speed drives with intermediate voltage circuits puts stress on the mains and motor, which can be optimised with the following additional measures (depending on the place of use and type of application):
Mains chokes reduce harmonics to the mains and increase the service life of components in the devices.
Harmonics filters reduce the harmonics resulting in sinusoidal current consumption without the voltage losses that occur with mains chokes.
HF Filters for high-frequency interference suppression of single and multi-axis systems Standard reduced leakage current IT mains
Output chokes for application areas up to 100 Hz (customer-specific solutions up to 1600 Hz)
Sinusoidal filters create sinusoidal motor voltages and reduce motor losses.
Available for output frequencies up to 100 Hz, 200 Hz, 800 Hz and 1600 Hz
Sinusoidal EMC filters as a combination of sinusoidal filters with EMC level reduce symmetrical and asymmetrical interference and support compliance with statutory limits for installations without shielded motor cables (on request).
Combine as special all-in-one solution
NHF Filters combine the effects of EMC filters and mains chokes
I/O filters combine the mains-side HF filter and motor-side du/dt filter
in a functional assembly with reduced and space-saving installation requirements.