GE Power Management
ALPS Advanced Line Protection System
2-49
2 CALCULATION OF SETTINGS
2.4 INVERSE CURVES
2
Figure 2–19: VERY INVERSE CURVE
0.01
0.1
1
10
100
0.1
1
10
100
MULTIPLES OF PICKUP
10
9
8
7
6
5
4
3
2
1
0.5
TIME
DIAL
TIME
(seconds)
+
−
=
0982
0
1
922
3
2
.
M
.
TD
)
PU
(
t
−
=
2
1
32
4
M
.
TD
)
RESET
(
t