ABB REB670 Applications Manual page 218

Section 7
Current protection
212
Mode
Set value
AB
BC
CA
A
B
C
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)
Formula used for complex power calculation
* *
= × -
S V ( I I )
AB A B
EQUATION2058-ANSI V1 EN
* *
= × -
S V ( I I )
BC B C
EQUATION2059-ANSI V1 EN
* *
= × -
S V ( I I )
CA C A
EQUATION2060-ANSI V1 EN
*
= × ×
S 3 V I
A A
EQUATION2061-ANSI V1 EN
*
= × ×
S 3 V I
B B
EQUATION2062-ANSI V1 EN
*
= × ×
S 3 V I
C C
EQUATION2063-ANSI V1 EN
1MRK 505 337-UUS -
(Equation 48)
(Equation 49)
(Equation 50)
(Equation 51)
(Equation 52)
(Equation 53)
Application manual