ABB Relion 620 Series - Page 408

Figure 203: Operating characteristic for phase angle 88
20
30
40
50
70
80
90
100
Io / % of I
n
0 90453015 7560-90 -45 -30 -15-75 -60
Min forward angle
10
88 deg
85 deg
73 deg
100% of In
20% of In
1% of In
Figure 204: Phase angle 88 amplitude ( Directional mode = Forward)
Protection functions
1MRS757644 H
408 620 series
Technical Manual