Basic Line Modules; Design - Siemens SINAMICS G130 Engineering Manual

SINAMICS S120 Cabinet Modules
Engineering Information
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Basic Line Modules

Design

Basic Line Modules are available for S120 Cabinet Modules in the output power range 200 to 900 kW at 400 V and
250 to 1500 kW at 690 V. The largest variant in each case therefore differs from the chassis unit spectrum. These
units can be supplied only as S120 Cabinet Modules.
Basic Line Modules can be used in combination with Line Connection Modules. In this case, the two module types
must be directly connected. The BLM cannot be installed at a remote location from the LCM. Possible combinations
can be found in the section "Line Connection Modules".
Example configuration of Basic Line Modules in frame sizes FB and GB/GD and also for a parallel connection
Every Basic Line Module requires a connection to a Control Unit. Differences between frame sizes FB and GB/GD in
terms of mechanical design and optional equipment only consist in use of different chassis frame sizes.
A fully controlled thyristor bridge is used on frame sizes FB and GB to precharge the connected DC link by the Basic
Line Module. The thyristors operate normally with a firing angle of 0°.
Basic Line Modules of frame size GD with a power rating of 900 kW (400 V) resp. 1500 kW (690 V) feature a diode
bridge. On these units, the DC link is precharged via a separate, line-side precharging circuit. This is fitted in the Line
Connection Module and selected via option L43 of the LCM.
SINAMICS Engineering Manual – May 2008
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