Line connection and line-side power components
3.11 Line connection variants
Booksize Power Units
146 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Operating line connection components via an autotransformer
An autotransformer can be used to step up or step down the voltage in the range up to 3-ph.
480 VAC +10%.
Applications:
● The motor insulation must be protected from excessive voltages.
● The Active Line Module must supply a regulated DC link voltage. This is possible with a
rated voltage of 380 V to 415 V.
In conjunction with motors that may be operated with a DC link voltage of up to 660 V,
and a line voltage > 415 V, a controlled DC link voltage is required.
Figure 3-65 Operation of a Line Module via an autotransformer
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