Siemens SINAMICS S120 Combi - Operating Line Connection Components Via an Autotransformer

Line-side power components
2.8 Line connection versions
SINAMICS S120 Combi
Manual, Edition 07/2012, 6SL3097-4AV00-0BP3
53
2.8.3.4 Operating line connection components via an autotransformer
An autotransformer can be used to adapt the voltage in the range up to 3-ph. 480 V AC +10
%.
DANGER
To ensure protective separation an isolation transformer must be used for voltages greater
than 3-ph. 480 V AC + 10 %.
Application example:
● The motor insulation must be protected from excessive voltages.
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Figure 2-12 Operation via an autotransformer