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.

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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

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)).

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Transfer T1 (kVA) = T2 (kVA)

T1

T2

Switching state of the
transfer switching equipment

Loads

0

0

x

OFF

1

0

P1 + P3

ON

0

1

P2 + P4

ON

1

1

(P1 or P2)*
+ (P3 or P4)*

ON

* Dependent on the priority setting on the transfer switching equipment