Siemens SENTRON - Transfer between two sources with two outgoing loads

Applications
13.2 Transfer between two sources with two outgoing loads
Manual, 08/2017, L1V30368969104A-02
207
13.2
Transfer between two sources with two outgoing loads
Transfer with T1 (kVA) > T2/G (kVA)
With this application, the power of source I is greater than that of source II
(T1 (kVA) > T2/G (kVA). One generator and one transformer are usually used for this.
However, with this application, the 3KC8 transfer switching equipment can also switch
between two transformers. The load is divided into a critical and non-critical load here.
Figure 13-2 Transfer T1 (kVA) > T2/G (kVA)
T1
T2/G
Switching state
of the
transfer switching
equipment
Non-critical load
Critical load
0 0 x OFF OFF
1 0 P1 ON ON
0 1 P2 OFF ON
1 1 P1 ON ON