19
20
21
22
23
24
13
14
15
16
17
18
A
AI 07(I)
AI 08 (V)
AI 09 (V)
AI 10(V)
AI 11(V)
AI 12(V)
IED
B
C
13.8
120
kV
V
1
2
3
#Not Used
13.8
120
kV
V
5
ANSI06000600-3-en.vsd
SMAI2
BLOCK
^GRP2_A (A-B)
^GRP2_B (B-C)
^GRP2_C (C-A)
^GRP2N
TYPE
AI3P
AI1
AI2
AI3
AI4
AIN
4
ANSI06000600 V3 EN
Figure 22: A Two phase-to-phase connected VT
Where:
1) shows how to connect the secondary side of a phase-to-phase VT to the VT inputs on the IED
2) is the TRM where these three voltage inputs are located. It shall be noted that for these three
voltage inputs the following setting values shall be entered:
VTprim
=13.8 kV
VTsec
=120 V
Please note that inside the IED only ratio of these two parameters is used.
Table continues on next page
1MRK 506 369-UUS - Section 4
Analog inputs
Line distance protection REL670 2.2 ANSI 89
Application manual
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