Siemens SIPROTEC 7VU681 User Manual page 40

Function
2.1 ATS
Figure 2-20 Pickup and CB Operation Logic of Transfer Mode T1->T2
Note
1, 17868 >B1 MCB Closed and 17869 >B2 MCB Closed work in the pickup logic of Transformer1-
>Transformer2 on the condition that they are configured to BIs in DIGSI matrix.
2, 8926 Transformer Energization Time is the energized time of the transformer when connected to the power
supply without load.
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SIPROTEC, 7VU681, User Manual
C53000-G1176-C368-1, Release Date 07.2012