ABB RELION RET670 - High Impedance Differential Protection, Single Phase HZPDIF (87)

IEC vector group ANSI designation Positive sequence no-load
voltage phasor diagram
Required delta CT connection
type on wye side of the
protected power transformer
and internal vector group
setting in the IED
Dyn11 D
AC
Y
Y
IEC06000562 V1 EN-US
DAC/Yy0
YNd5 YD150
Y
IEC06000563 V1 EN-US
DAB/Yy6
Dyn5 DY150
Y
IEC06000564 V1 EN-US
DAC/Yy6
7.2 High impedance differential protection, single phase
HZPDIF (87)
IP14239-1 v4
7.2.1
Identification
M14813-1 v4
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
High impedance differential protection,
single phase
HZPDIF
Id
SYMBOL-CC V2 EN-US
87
1MRK 504 163-UUS A Section 7
Differential protection
Transformer protection RET670 2.2 ANSI 157
Application manual