Siemens SINAMICS GL150 - Principle of Operation

① AVT combination modules
② Transformer
③ Measuring resistors
④ Surge suppressor
⑤ 80 kHz power supply
Figure 3-7 Overview of the voltage sensing circuit
3.3.3.4 Ground fault detection
The measuring resistors are current-limiting elements. Using them in conjunction with the
surge suppressor provides personnel protection.
Description
3.3 Power unit
SINAMICS GL150 6SL38503UM114PA0Z
38 Operating Instructions Rev.201910301420 MUSTER