Siemens SENTRON - Page 80

Connection
6.3 Connecting the control circuit
80 Manual, 08/2017, L1V30368969104A-02
Connecting an autotransformer
See the table below for the requirements of the supply lines needed for the connection:
Cu
200 VA
U
e
= 400 / 230 V
U
imp
= 2.5 kV
0.5 ... 2.5 mm
2
0.5 ... 1.5 mm
2
On the autotransformer, phase L1 is transformed in each case, and phase L3 is used as the
conductor. Please proceed as follows to connect the autotransformer correctly:
1. Connect the supply lines with the autotransformer in accordance with the figure.
Figure 6-61 Connecting an autotransformer
2. Tighten the contacts with a screwdriver.