ABB Relion 670 series - Page 908

Set value for
parameter
“Mode”
Formula used for complex, three-
phase power calculation
Formula used for voltage and
current magnitude calculation
Comment
1 A, B, C
* * *
A A B B C C
S V I V I V I= × + × + ×
EQUATION1561 V1 EN
( )
( )
/ 3
/ 3
A B C
A B C
V V V V
I I I I
= + +
= + +
EQUATION1562 V1 EN
Used when three
phase-to-ground
voltages are
available
2 Arone
* *
AB A BC C
S V I V I= × - ×
EQUATION1563 V1 EN (Equation 160)
( )
( )
/ 2
/ 2
AB BC
A C
V V V
I I I
= +
= +
EQUATION1564 V1 EN (Equation 161)
Used when three
two phase-to-
phase voltages
are available
3 PosSeq
*
3
PosSeq PosSeq
S V I= × ×
EQUATION1565 V1 EN (Equation 162)
3
PosSeq
PosSeq
V V
I I
= ×
=
EQUATION1566 V1 EN (Equation 163)
Used when only
symmetrical three
phase power shall
be measured
4 AB
( )
* *
AB A B
S V I I= × -
EQUATION1567 V1 EN (Equation 164)
( )
/ 2
AB
A B
V V
I I I
=
= +
EQUATION1568 V1 EN (Equation 165)
Used when only
V
AB
phase-to-
phase voltage is
available
5 BC
( )
* *
BC B C
S V I I= × -
EQUATION1569 V1 EN (Equation 166)
( )
/ 2
BC
B C
V V
I I I
=
= +
EQUATION1570 V1 EN (Equation 167)
Used when only
V
BC
phase-to-
phase voltage is
available
6 CA
( )
* *
CA C A
S V I I= × -
EQUATION1571 V1 EN (Equation 168)
( )
/ 2
CA
C A
V V
I I I
=
= +
EQUATION1572 V1 EN (Equation 169)
Used when only
V
CA
phase-to-
phase voltage is
available
7 A
*
3
A A
S V I= × ×
EQUATION1573 V1 EN (Equation 170)
3
A
A
V V
I I
= ×
=
EQUATION1574 V1 EN (Equation 171)
Used when only
V
A
phase-to-
ground voltage is
available
Table continues on next page
Section 15 1MRK505222-UUS C
Monitoring
902
Technical reference manual