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

2.2.3

Operation of the line connection components via an autotransformer

An autotransformer can be used for voltage adaptation in the range up to 480 V 3AC +10%.
Applications:
• The motor insulation must be protected from excessive voltages.
• The active line module must provide a stabilized DC link voltage. It can be in the range
Figure 2-4
Booksize Power Sections
Equipment Manual, (GH2), 04.2004 Edition, 6SL3097-2AC00-0BP0
380 V to 415 V.
L1
L2
L3
PE
Autotransformer
Fuses
Auto-
transformer
Fuses
Line
contactor
Line filter
(optional)
Line reactor
U1 V1 W1
Line module
DCP DCN
Line Connection Booksize
2.2 Line connection variations
Further loads
N
netz_spartrafo.vsd
2-5