ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. C
12-6
Fig. 12.5 Example of the input transformer connections for
the differential protection functions (‘Diff-Transf’,
and ‘Diff-Gen’)
Providing the c.t’s, and input transformers are connected as
shown in Fig. 12.5, the details given in Sections 3.5.1. (‘Diff-
Transf’) and 3.5.2. (‘Diff-Gen’) apply, i.e. the differential current
becomes zero for a through-fault.
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