Connecting
6.6 Line reactors
SINAMICS DCM DC Converter
146 Operating Instructions, 12/2018, A5E34763375A
The line impedance, with line reactors factored in, should be between 4% and 10% of the
short-circuit voltage.
Line inductances always need to be provided in the infeed in order to limit voltage dips and
ensure that the SINAMICS DCM functions correctly. In the most straightforward situations
this can be done by using a 4% line reactor.
The only situations in which a line reactor is not required are when the converter is supplied
as the only load by means of a separate transformer winding (converter transformer adapted
to the power level).
Where several converters are used on a transformer winding, line reactors must be used
upstream of every converter.
Semiconductor fuses should be installed in the converter system upstream of the reactor.
The break times are then achieved by the normally used semiconductor fuses
An incorrect arrangement can destroy a thyristor (short-circuit) and rupture a fuse.
Line reactor selection list
Table 6- 4 3-phase line reactors, rated voltage = 400 V AC, uk = 4%
6RX1800-4DK14 1660 A AC 0.018 mH 369.3 W 591.9 W 75 kA (200 ms) 210.7 kg 1000 V
To Next Page
Loading...
Need help?
General
