ABB RELION 670 SERIES Applications Manual page 557

1MRK 506 369-UUS -
Line distance protection REL670 2.2 ANSI
Application manual
Mode
Set value
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)
Current protection
Formula used for complex power calculation
* *
= × -
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
Section 9
(Equation 489)
(Equation 490)
(Equation 491)
(Equation 492)
(Equation 493)
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