Operation Of The Line Connection Components Via An Autotransformer - Siemens SINAMICS S120 Equipment Manual

Mains connection and line-side power components
4.8 Line connection variants
Operation of single-phase units on the Single Phase Grounded Midpoint line system configuration
The line connection depicted below applies to the operation of single-phase units (1-
ph. 230 VAC) on the Single Phase Grounded Midpoint line system configuration commonly
used in the USA:
Figure 4-20
4.8.4

Operation of the line connection components via an autotransformer

In the range up to 3 AC 690 V +10 %, 3 AC 480 V +10 % or 1 AC 240 V +10 %, an
autotransformer can be used to step up or step down the voltage.
Application example:
● The motor insulation must be protected from excessive voltages.
72
Direct operation on single phase grounded midpoint line system configurations
Manual, 06/2019, 6SL3097-5AL00-0BP1
AC Drive