ABB RER620 Technical Manual page 165

1MAC309294-MB F
RER620
Technical Manual
Min forward angle
Non-operating area
80 deg
70 deg
Max reverse angle
3% nominal
amplitude
1% nominal
amplitude
Figure 70: Operating characteristic for phase angle classic 80
Non-
operating
area
-90 -75
Figure 71: Phase angle classic 80 amplitude
Phase angle, classic 88
The operation criterion phase angle classic 88 is selected with the Operation mode setting
using the value "Phase angle 88".
Phase angle classic 88 implements the same functionality as the phase angle, but with the
following differences:
-V
0
RCA
Forward
area
I
0
Backward
area
I I
/ % of
n
0
10
Min forward angle
9
8
Forward
7
area
6
5
4
3
2
1
-60 -45 -30 -15 0 15
Section 4
Protection functions
Max forward angle
Min reverse angle
80 deg
3% of
70 deg
1% of
30 45 60 75 90
70 deg
80 deg
I
n
I
n
159