Smart Line Modules; Design - Siemens SINAMICS G130 Engineering Manual

SINAMICS S120 Cabinet Modules
Engineering Information

7.2.6 Smart Line Modules

7.2.6.1

Design

Smart Line Modules are available for S120 Cabinet Modules in three frame sizes with output power ratings of 250 kW
to 800 kW at 400 V and 450 kW to 1400 kW at 690 V.
The Smart Line Modules can be used in combination with Line Connection Modules. In this case, the two module
types must be directly connected. An SLM cannot be installed at a remote location from the LCM. Possible
combinations can be found in the section "Line Connection Modules".
Air-cooled Smart Line Modules in frame sizes GX, HX and JX
Smart Line Modules do not require, in contrast to Active Line Modules, a line-side filter. Only a line reactor with a
relative short-circuit voltage of 4 % is needed. This line reactor is a standard feature of the Smart Line Modules in
Cabinet Modules format.
A precharging circuit for the DC link capacitors is integrated into the units. The supply voltage for the precharging circuit is
taken from the Line Connection Module in front of the contactor respectively circuit breaker. It is protected by a separate
fuse-switch disconnector, which is also installed in the Line Connection Module. It is important to take into account that the
precharging capacity of the precharging circuit is unit-specific and limited to a maximum of 4 to 7.8 times the value of the
DC link capacitance installed in the unit itself. Please refer to the instructions in section "Checking the maximum DC link
capacitance" in chapter "General Information about Built-in and Cabinet Units SINAMICS S120".
SINAMICS Engineering Manual – November 2015
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Ó Siemens AG