ABB REB670 - Page 231

Table 33: Complex power calculation
Set value
Mode Formula used for complex power calculation
A, B, C
* * *
A A B B C C
S V I V I V I= × + × + ×
EQUATION2055-ANSI V1 EN-US (Equation 42)
Arone
* *
AB A BC C
S V I V I= × - ×
EQUATION2056-ANSI V1 EN-US (Equation 43)
PosSeq
*
3
PosSeq PosSeq
S V I= × ×
EQUATION2057-ANSI V1 EN-US (Equation 44)
AB
* *
( )
AB A B
S V I I= × -
EQUATION2058-ANSI V1 EN-US (Equation 45)
BC
* *
( )
BC B C
S V I I= × -
EQUATION2059-ANSI V1 EN-US (Equation 46)
CA
* *
( )
CA C A
S V I I= × -
EQUATION2060-ANSI V1 EN-US (Equation 47)
A
*
3
A A
S V I= × ×
EQUATION2061-ANSI V1 EN-US (Equation 48)
B
*
3
B B
S V I= × ×
EQUATION2062-ANSI V1 EN-US (Equation 49)
C
*
3
C C
S V I= × ×
EQUATION2063-ANSI V1 EN-US (Equation 50)
The function has two stages that can be set independently.
With the parameter OpMode1(2) the function can be set Enabled
/Disabled.
The function gives trip if the power component in the direction defined by the setting
Angle1(2) is smaller than the set pick up power value Power1(2)
1MRK 505 370-UUS A Section 7
Current protection
Busbar protection REB670 2.2 ANSI 225
Application manual