Requirements For Line Reactors - Siemens SINAMICS G120X Operating Instructions Manual

Infrastructure converter for hvac/water/wastewater

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2.6 Optional components

Requirements for line reactors

Rated power of converter (kW)

It is recommended that a line reactor is always connected on the line side of the converter, as

in practice, it is often not known on which supply configuration individual converters are to be

operated, i.e. which supply short-circuit power is present at the converter connection point.

A line reactor can only be dispensed with when the value for R

table. This is the case, when the converter, as shown in the following figure, is connected to the

line through a transformer with the appropriate rating.

A line reactor is always needed if a line filter is used.

In this case, the line short-circuit power S

approximately:

Line reactor can be omitted for

= Transformer rated power

= Short-circuit power of the higher-level voltage level

= Relative short-circuit voltage

at the connection point of the converter is

Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC

Line reactor is required for R

is less than that in the above

SINAMICS G120X converter