ABB DCS series thyristor power converter

_{Model selection and ordering information}

_{（1） Model coding rules}

_{Taking "DCS 500B-0250-51-4Q" as an example, the key parameter meanings are:}

_{500B ": Basic model;}

_{0250 ": Output current 250A;}

_{51 ": Voltage level 500V DC;}

_{4Q ": Running in 4 quadrants.}

_{（2） Core selection criteria}

_{Motor parameters: Select the module based on the rated power of the DC motor, armature voltage/current, and excitation voltage/current (e.g. 100kW/440V motor compatible with DCS 500B-0250-51);}

_{Application requirements: Select 4-quadrant module for energy feedback, DCS 600+AMC-DC communication board for multi motor synchronization, and water-cooled module for high temperature environment;}

_{Power grid conditions: The public power grid needs to be equipped with EMC filters, and if the power grid harmonics are severe, line reactors need to be added.}