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If the current amplitude falls below one percent of the nominal current, the
direction enters the non-directional area.
RCA
Non-operating area
3% nominal
amplitude
Max forward angle
Min forward angle
Min reverse angle
Max reverse angle
70 deg
80 deg
70 deg
80 deg
Forward
area
Backward
area
1% nominal
amplitude
IG
-VG
GUID-2F0D9869-85AD-400A-97EC-8295D06D4F9E V1 EN
Figure 163:
Operating characteristic for phase angle classic 80
2
3
4
5
6
7
8
9
10
/ % of
0
90
45
30
15
75
60
-90
-45 -30 -15
-75 -60
Min forward angle
1
80 deg
70 deg
Forward
area
Non-
operating
area
3% of
1% of
0
I
n
I
n
I
n
I
GUID-49D23ADF-4DA0-4F7A-8020-757F32928E60-ANSI V1 EN
Figure 164:
Phase angle classic 80 amplitude
1MAC059074-MB A
Section 4
Protection functions
615 series ANSI
347
Technical Manual
Содержание Relion 615 series
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