ABB Relion 670 Series Applications Manual page 507

1MRK 511 401-UUS F
Table below summarizes the most commonly used wye-delta phase shifts around the world and
provides information about the required type of main CT delta connection on the wye side of the
transformer.
IEC phase shift
YNd1
Dyn1
YNd11
Dyn11
YNd5
Dyn5
Bay control REC670
Application manual
ANSI designation Positive sequence no-load
voltage phasor diagram
YD
AC
Y
IEC06000559 V1 EN-US
D Y
AB
IEC06000560 V1 EN-US
YD
AB
IEC06000561 V1 EN-US
D Y
AC
Y
IEC06000562 V1 EN-US
YD150
Y
IEC06000563 V1 EN-US
DY150
IEC06000564 V1 EN-US
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Required delta CT connection type on wye
side of the protected power transformer
and internal phase shift setting in the IED
DAC/Yy0
DAB/Yy0
Y
DAB/Yy0
Y
DAC/Yy0
DAB/Yy6
DAC/Yy6
Y
Section 17
Monitoring
501