Hitachi Relion 670 Series Applications Manual page 72

Section 4
Analog inputs
In case of a solid ground fault in high impedance grounded or ungrounded systems the primary value of
V voltage will be equal to:
0
V
-
ph
=
V 0
3
EQUATION1932 V2 EN-US
Figure 24
to the built-in protection and control functions within the IED.
IEC06000603 V4 EN-US
ANSI06000603 V2 EN-US
Figure 24:
66
ph
=
V
-
ph Gnd
gives an overview of required actions by the user in order to make this measurement available
Protected Object
L1 L2
R
Protected Object
B
A
R
Neutral point connected VT
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IED
L3
1
Uo
6.6 kV
3
100 V
IED
13
14
C
15
16
17
18
19
20
1 21
22
23
Vo
24
6.6 kV
3
100 V
1MRK511407-UUS Rev. N
2
3
SMAI2
BLOCK
REVROT
# Not Used ^GRP2L1
# Not Used ^GRP2L2
# Not Used ^GRP2L3
^GRP2N
4
IEC06000603-4-en.vsdx
2
AI07 (I)
AI08 (I)
BLOCK
AI09 (I)
^GRP2_A
# Not Used
3
^GRP2_B
# Not Used
AI10 (V)
# Not Used ^GRP2_C
^GRP2N
AI11 (V)
TYPE
AI12 (V)
4
ANSI06000603-2-en.vsd
Phasor measurement unit RES670
Application manual
(Equation 11)
5
AI3P
AI1
AI2
AI3
AI4
AIN
5
SMAI2
AI3P
AI1
AI2
AI3
AI4
AIN