ABB RELION REX640 Technical Manual page 1049

1MRS759142 F
Figure 585: Quadrilateral operation characteristics
The reach of inner polygon in the reactive direction is defined by the line reach
independently with the settings
reach of inner polygon is defined at the minimum resistive reach with settings
Min Ris Rch . The reach of outer polygon in the reactive direction is defined by the
line reach independently with the settings
The resistive reach of outer polygon is defined at the minimum resistive reach with
settings
Mho circular characteristics
When the
circular characteristic.
REX640
Technical Manual
Outer Min Ris Rch
Load angle2
Load angle1
Inner Min Ris Rch
Outer Min Ris Rch
Outer Min Ris Rch .
Pe Swg impedance Chr is "Mho (circular)", the DSTRPSB has a double
X
Outer X1 Outer R1
Inner X1
Inner R1
Inner Min Ris Rch
Outer Fw Ld
Outer Rv Ld Ris Rch Ris Rch
Inner Rv Inner Fw Ld
Ld Ris Rch Ris Rch
Inner Min Ris Rch
Inner X1 reverse
Outer Min Ris Rch
Outer X1 reverse
Inner R1, Inner X1, Inner X1 reverse . The resistive
Outer R1, Outer X1, Outer X1 reverse .
Protection functions
Outer Min Ris Rch
Inner Min Ris Rch
Load angle1
R
Load angle2
Inner
1049