A line reactor (also referred to as a "choke") is a variable frequency drive (VFD) accessory. It consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of the current, thus reducing harmonics and protecting the drive from power system surges and transients.
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The SINAMICS DCM.
The SINAMICS DCM is the newest member of the SINAMICS DC drives family, combining the advantages of its predecessors, the SIMOREG 6RA70 DC Master, and the SIMOREG 6RA24 with the advantages of the SINAMICS family. Many of the SINAMICS tools and components so successful in S120 AC technology are now made available for the 6RA80 SINAMICS DC drives.