ABB RELION 620 Series Technical Manual page 219

1MAC504801-IB E
620 series ANSI
Technical Manual
I
0
Min forward angle
Non-operating area
Max reverse angle
Min operate
current
GUID-92004AD5-05AA-4306-9574-9ED8D51524B4-ANSI V1 EN
Figure 95: Configurable operating sectors in phase angle characteristic
Table 160: Momentary operating direction
Fault direction
Angle between the polarizing and operating quantity
is not in any of the defined sectors.
Angle between the polarizing and operating quantity
is in the forward sector.
Angle between the polarizing and operating quantity
is in the reverse sector.
Angle between the polarizing and operating quantity
is in both the forward and the reverse sectors, that is,
the sectors are overlapping.
-V
0
= 0 deg
RCA
Forward
area
Max forward angle
Min reverse angle
Backward
area
The value for DIRECTION
0 = unknown
1= forward
2 = backward
3 = both
Section 4
Protection functions
213