ABB ret650 - Page 98

IEC vector group Positive sequence no-load
voltage phasor diagram
Required delta CT connection type on star side
of the protected power transformer and internal
vector group setting in the IED
YNd1
Y
IEC06000559 V1 EN-US
DAC/Yy0
Dyn1
Y
IEC06000560 V1 EN-US
DAB/Yy0
YNd11
Y
IEC06000561 V1 EN-US
DAB/Yy0
Dyn11
Y
IEC06000562 V1 EN-US
DAC/Yy0
YNd5
Y
IEC06000563 V1 EN-US
DAB/Yy6
Dyn5
Y
IEC06000564 V1 EN-US
DAC/Yy6
Section 6 1MRK 504 169-UEN A
Differential protection
92 Transformer protection RET650 2.2 IEC
Application manual