L1
IED
L2
L3
66
3
110
3
kV
V
1
3
2
66
3
110
3
kV
V
66
3
110
3
kV
V
.
#Not used
5
IEC06000599-4-en.vsdx
4
SMAI2
BLOCK
REVROT
^GRP2L1
^GRP2L2
^GRP2L3
^GRP2N
AI3P
AI1
AI2
AI3
AI4
AIN
IEC06000599 V4 EN-US
Figure 20: A Three phase-to-earth connected VT
Where:
1) shows how to connect three secondary phase-to-earth voltages to three VT inputs on the IED
2) is the TRM where these three voltage inputs are located. For these three voltage inputs, the
following setting values shall be entered:
VTprim
=
66 kV
VTsec
=
110 V
Inside the IED, only the ratio of these two parameters is used. It shall be noted that the ratio of
the entered values exactly corresponds to ratio of one individual VT.
EQUATION1903 V1 EN-US (Equation 2)
Table continues on next page
Section 4 1MRK 511 358-UEN A
Analog inputs
68
Application manual
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