3KC3 and 3KC6 transfer switching equipment3KC3 and 3KC6 transfer switching equipment
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). A generator and a transformer are usually used for this. However, with this application, the transfer switching equipment can also switch between two transformers. The load is divided into a critical and a non-critical load here.

T1 |
T2/G |
Switching state of the |
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 |
Transfer with T1 (kVA) = T2 (kVA)
The transfer switching equipment also offers innovative approaches for connection to two non-differentiated transformers with equal power (T1 (kVA) = T2 (kVA)).

T1 |
T2 |
Switching state of the |
Loads |
---|---|---|---|
0 |
0 |
x |
OFF |
1 |
0 |
P1 + P3 |
ON |
0 |
1 |
P2 + P4 |
ON |
1 |
1 |
(P1 or P2)* |
ON |
* Dependent on the priority setting on the transfer switching equipment