GE ALPS - Page 112

2-48 ALPS Advanced Line Protection System
GE Power Management
2.4 INVERSE CURVES 2 CALCULATION OF SETTINGS
2
2.4 INVERSE CURVES
Figure 2–18: 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)






−
=
2
1
970
M
.
TD)RESET(t






+
−
= 02280
1
01030
020
.
M
.
TD)PU(t
.