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3KC3 and 3KC6 transfer switching equipment3KC3 and 3KC6 transfer switching equipment
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.

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