ABB ret650 - Page 66

L1
IED
L2
L3
6.6
3
110
3
kV
V
+3Uo
6.6
3
110
3
kV
V
6.6
3
110
3
kV
V
1
2
4
3
# Not Used
5
IEC06000601-4-en.vsdx
# Not Used
# Not Used
SMAI2
BLOCK
REVROT
^GRP2L1
^GRP2L2
^GRP2L3
^GRP2N
AI3P
AI1
AI2
AI3
AI4
AIN
IEC06000601 V4 EN-US
Figure 21: Open delta connected VT in high impedance earthed power system
Section 4 1MRK 504 169-UEN A
Analog inputs
60 Transformer protection RET650 2.2 IEC
Application manual