GE ALPS - Page 113

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)






+
−
= 09820
1
9223
2
.
M
.
TD)PU(t






−
=
2
1
324
M
.
TD)RESET(t