GE Multilin MIGII Instruction Manual page 166

9.18 RESTRICTED GROUND DIFFERENTIAL CURRENT (87R)
Table 9–2: FOR A RATED CURRENT OF 5 AMP. IN PHASES AND 5 AMP. IN NEUTRAL
Apply:
Ia: 1 amp@0º
Ib: 1 amp@120º
In: 1 amp@60º
Check that the relay does not trip.
Apply:
Ia: 1 amp@0º
Ib: 1 amp@120º
In: 1 amp@240º
Check that the relay trips in less than 60 ms.
9
9-22
IA IN
1 2,6
2 3,8
3 5,0
1 2,8
2 4,2
3 5,6
MIGII Digital Protection for Electrical Machines
9 RELAY COMMISSIONING
K IN TRIP
20% 2,7
20% 3,9
20% 5,1
40% 2,9
40% 4,3
40% 5,7
GEK-113188A