ABB RARIC - Page 7

RARIC
Shaft current protection
1MRK 502 001-UEN
Page 7
Fig. 3 Primary operate current at relay setting 0.5 resp. 1 mA as func-
tion of the inner diameter of ILDD.
The filter in Version 2 rejects the fundamental voltage by more than 70:1.
Fig. 4 Operate voltage of RARIC, Version 2 as function of frequency.
Rated frequency = 50 Hz.
502001
-1
7
6
1
0,5
0,1
0,04
(V)
30 50 100 150 500
I = 1 mA
s
I = 0,5 mA
s
f (Hz
)
502001
-2