Seg WI Series - Page 281

11.2.1.2.3 Fuse Characteristic of an HV Fuse – Phase Overcurrent Protection
»Char« = HV Fuse
1 10 100
0.01
0.1
1
10
100
1000
10000
I / I> (multiples of pickup)
wiPDOC_Z14
0.05
0.1
0.2
0.3
0.4
0.6
1
2
3
4
6
10
tChar=
t / s
Fig. 83: HV Fuse: trip delay, I > I
>
, example for I
Dyn.Lim.
= 20⋅I
>
.
See ╚═▷ “Explanation for All Characteristics (I>, I>>, I>>>)” and ╚═▷ “11.2.1.2 Inverse-
Time Characteristics (I>, I>>, I>>>)” for details.
Reset Delay
The reset modes “instantaneous” or “de󰊟nite time” are available. For this characteristic,
there is no reset mode with dynamic reset delay.
Trip Delay
If I
>
< I < I
Dyn.Lim.
, the trip delay is de󰊟ned by the characteristic.
For I > I
Dyn.Lim.
, the trip delay t is kept constant at t = t
Dyn.Lim.
.
281WIC1WIC1-1.0-EN-MAN
11 Appendix
11.2.1.2.3 Fuse Characteristic of an HV Fuse – Phase Overcurrent Protection