Siemens SINAMICS S120 - Page 153

Cabinet Modules
5.2 Basic Line Modules
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
153
Basic Line Modules (BLM) are compact line infeeds for two-quadrant operation, i.e. no
regenerative feedback.
Under full load, the DC-link voltage is higher than the rms value of the rated supply voltage
by a factor of 1.32, and under partial load by a factor of 1.35.
They are used in applications where energy does not have to be fed back into the line.
If regenerative conditions occur in the drive assembly, braking modules must be used
because they convert the excess energy in braking resistors into heat.
Basic Line Modules are suitable for connection to supply systems grounded at the neutral
point (TN, TT) and ungrounded supply systems (IT). The following voltages and power
ratings are available:
Line voltage
Rated power
380 to 480 V 3 ph. AC
200 ... 900 kW
500 to 690 V 3 ph. AC
250 ... 1500 kW
The power rating can be increased by connecting Basic Line Modules in parallel.