ABB REL670 2.2 IEC Applications Manual page 92

Section 4
Analog inputs
86
132 kV
2
110 V
2
132 kV
2
110 V
2
IEC16000140 V1 EN-US
Figure 21: A two 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 = 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-US
Table continues on next page
L1
IED
L2
1
3
3
1MRK 506 369-UEN B
2
3
SMAI2
BLOCK
^GRP2L1
5
^GRP2L2
^GRP2L1L2
^GRP2N
4
IEC16000140-1-en.vsdx
(Equation 2)
Line distance protection REL670 2.2 IEC
Application manual
AI2P
AI1
AI2
AI3
AI4
AIN