Autotransformer - Siemens SENTRON Manual

9.7

Autotransformer

With the autotransformer, the necessary rated voltage of 230 V AC can be generated in a
three-phase 3-wire network without neutral. The method of mounting and connecting the
autotransformer can be seen in the section titled Installing and connecting an
autotransformer (400 V / 230 V) (Page 79).
Figure 9-19
Use of a dual power supply is recommended for the 3KC4 transfer switching equipment. In
this case, 2 autotransformers are required both for the 3KC4 transfer switching equipment
and for the 3KC8 transfer switching equipment respectively.
Current rating
250 A ... 3200 A
Manual, 08/2017, L1V30368969104A-02
Autotransformer (400 V / 230 V) 3KC9824–1
Number of poles
3
Position
-
Accessories
9.7 Autotransformer
Product number
3KC9824-1
157