Transfer Between Three Sources With One Outgoing Load - Siemens SENTRON Manual

13.3

Transfer between three sources with one outgoing load

Transfer with T1 (kVA) = T2 (kVA) = G
The transfer switching equipment can be used for transfer between 3 sources comprising
two transformers T1 and T2 as well as one generator G with an outgoing load. By using two
transfer switches, this complex application in which the power of the 3 sources is equal
(T1 (kVA) = T2 (kVA) = G) can be realized, thus enabling the power supply to be maintained.
Figure 13-4
* Dependent on the priority setting on the transfer switching equipment
Manual, 08/2017, L1V30368969104A-02
Transfer T1 (kVA) = T2 (kVA) = G
T1 T2
0 0
1 0
0 1
0 0
1 1
13.3 Transfer between three sources with one outgoing load
G
0
x
x
1
x
Switching state
of the
transfer switching
equipment
x
P1 + P3
P2 + P3
P4
(P1 or P2)* + P3
Applications
Load
OFF
ON
ON
ON
ON
209