ABB RELION 670 SERIES Applications Manual page 93

1MRK 506 369-UUS -
Line distance protection REL670 2.2 ANSI
Application manual
132 kV
2
110 V
2
132 kV
2
110 V
2
IEC16000140 V1 EN
Figure 21: A two phase-to-earth connected VT
Where:
1) shows how to connect three secondary phase-to-ground 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 = 132 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.
66
66
=
110
110
EQUATION1903 V1 EN
Table continues on next page
L1
IED
L2
1
3
3
Section 4
Analog inputs
2
3
SMAI2
BLOCK AI2P
^GRP2L1
AI1
5
^GRP2L2 AI2
^GRP2L1L2 AI3
^GRP2N
AI4
AIN
4
IEC16000140-1-en.vsdx
(Equation 2)
87