ABB RELION 670 Series Applications Manual page 146

Section 8
Current protection
Table 18:
Set value
A, B, C
Arone
PosSeq
AB
BC
CA
A
B
C
The function has two stages that can be set independently.
With the parameter
The function gives trip if the power component in the direction defined by the setting
smaller than the set pick up power value
140
Complex power calculation
Mode
OpMode1(2) the function can be set Enabled / Disabled .
Formula used for complex power calculation
* *
= × + × +
S V I V I
A A B B
EQUATION2055-ANSI V1 EN-US
*
= × - ×
S V I V I
AB A BC
EQUATION2056-ANSI V1 EN-US
*
= × ×
S 3 V I
PosSeq PosSeq
EQUATION2057-ANSI V1 EN-US
* *
= × -
S V ( I I )
AB A B
EQUATION2058-ANSI V1 EN-US
* *
= × -
S V ( I I )
BC B C
EQUATION2059-ANSI V1 EN-US
* *
= × -
S V ( I I )
CA C A
EQUATION2060-ANSI V1 EN-US
*
= × ×
S 3 V I
A A
EQUATION2061-ANSI V1 EN-US
*
= × ×
S 3 V I
B B
EQUATION2062-ANSI V1 EN-US
*
= × ×
S 3 V I
C C
EQUATION2063-ANSI V1 EN-US
Power1(2)
1MRK 511 364-UUS A
*
×
V I
C C
(Equation 55)
*
C
(Equation 56)
(Equation 57)
(Equation 58)
(Equation 59)
(Equation 60)
(Equation 61)
(Equation 62)
(Equation 63)
Angle1(2) is
Application manual