ABB RELION RET670 - Page 588

Set value
Mode Formula used for complex power calculation
BC
* *
( )
BC B C
S V I I= × -
EQUATION2059-ANSI V1 EN-US (Equation 457)
CA
* *
( )
CA C A
S V I I= × -
EQUATION2060-ANSI V1 EN-US (Equation 458)
A
*
3
A A
S V I= × ×
EQUATION2061-ANSI V1 EN-US (Equation 459)
B
*
3
B B
S V I= × ×
EQUATION2062-ANSI V1 EN-US (Equation 460)
C
*
3
C C
S V I= × ×
EQUATION2063-ANSI V1 EN-US (Equation 461)
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)
Section 9 1MRK 504 163-UUS A
Current protection
582 Transformer protection RET670 2.2 ANSI
Application manual