Page 5-3
FPU-32 Feeder Protection Unit
Rev.
2-A-103014
Protective Functions
Curve ........................................ See Table 5.1
Pickup ....................................... 0.10 to 10.00 x CT-
Primary Rating (I
p
)
Pickup Curve Threshold ........... 1.1 x Pickup setting
Reset Curve Threshold ............. 0.9 x Pickup setting
Time Multiplier ........................ 0.05 to 1.00
Protection ................................. Enable/Disable Trip1, 2, 3
Measurement Method .............. DFT c/w CT-saturation
compensation
Set-Point Groups ...................... Group 1 and Group 2
CURRENT IN MULTIPLES OF PICKUP SETTING (I
M
)
TIME
IN
SECONDS
(t)
I
2
t OVERLOAD
1
2
3
4
5
6
7
8
9 10
20
0.1
0.2
0.3
0.5
0.7
1
2
3
5
7
10
20
30
50
70
100
200
300
500
700
1000
2000
3000
5000
7000
10000
20000
5
1
10
20
30
40
60
2
I
M
> 1: t = 60 x
?
x ln(I
M
2
/(I
M
2
-1))
?
(min)
FIGURE 5.1 I
2
t Overload Cold Curves.
