GE LPS-O - Extremely Inverse Curve

GE Power Management LPS-O Line Protection System 2-
31
2 CALCULATION OF SETTINGS 2.4 INVERSE CURVES
2
2.4.3 EXTREMELY INVERSE CURVE
,
Figure 2–16: EXTREMELY INVERSE CURVE
0.01
0.1
1
10
100
0.1 1 10 100
MULTIPLES OF PICKUP
TIME (seconds)
10
9
8
7
6
5
4
3
2
1
0.5
t
i
m
e
d
i
a
l
TIME DIAL
t RESET
()
TD
5.82
1
M
–
2
-----------------
=
tPU
()
TD
5.64
M
2
1
–
-----------------
0.02434
+=