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.

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Transfer T1 (kVA) = T2 (kVA) = G

T1

T2

G

Switching state of the
transfer switching equipment

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