Air-Cooled Active Line Modules For The Grid Infeed, Chassis Format; Description - Siemens SINAMICS S120 System Manual

Device overview

8.4 Air-cooled Active Line Modules for the grid infeed, chassis format

8.4 Air-cooled Active Line Modules for the grid infeed, chassis format
8.4.1

Description

The self-commutating infeed / regenerative feedback units act as step-up converters and
generate a stabilized DC link voltage that is 1.5x greater than the rated line supply voltage.
In this way, the connected Motor Modules are isolated from the line voltage. This improves
the dynamic response and control quality because line tolerances and fluctuations do not
affect the motor voltage.
If required, the Active Line Modules can also provide reactive power compensation.
Especially for photovoltaic applications, the 3 AC 320 V ... 480 V Active Line Modules have
an AC connection voltage range up to 320 V and a very wide DC voltage range. The
technical data includes supplements for operation with connection voltages 3 AC 320 V.
Table 8- 1
142
Overview of Active Line Modules for line infeed
Frame size GX Frame size JX
System Manual, 04/2015, A5E03347436A
Grid infeed