358
NVA100X-D - Manual - 02 - 2016
APPENDIX
Phase overcurrent 50/51 side H and side L - Rectifier curves
—
F_51-RI-Char.ai
0.01
0.1
1
100
10
1000
10 000
100 000
1000 000
t
[s]
1.1
2
3
4
5
6
7
8 9 10
20
I
/
I
(L)
>inv
I
/
I
(H)
>inv
60 s
10 s
5 s
1 s
0.1 s
0.5 s
0.02 s
0.1 s
t
=
t
(H)
>
inv
t
(H)
>
inv
t
(L)
>
inv
·
[(
I
/
I
(H)
>
inv
)
5.6
-1]
2351
t
=
t
(L)
>
inv
·
[(
I
/
I
(L)
>
inv
)
5.6
-1]
2351
Note: match of operating and setting time takes place when I/I
(H)
>
inv
or I/I
(L)
>
inv
= 4