Thytronic NC020 - RMS Phase Overcurrent 50;51 RMS - CAPACITOR Curve

APPENDIX
80
NC020 - Manual - 05 - 2022
— RMS phase overcurrent 50/51 RMS - CAPACITOR curve
F_51RMS-Capacitor-Char.ai
1.1
2 3 4 5 6 7 8 9 10 20
I
RMS
/I>inv
0.01
0.1
1
10
100
1000
10000
100000
1000000
t [s]
t =
t>
inv
·
[1.1·(I
RMS
/I>
inv
)
17
-1]
+ 0.1
50000
t>
inv
= 0.1 s
t>
inv
= 0.02 s
t>
inv
= 1.0 s
t>
inv
= 10 s
t>
inv
= 60 s
Operating characteristic concerning the Phase overcurrent RMS element (50/51 RMS)