C-2
MIWII Directional Power Protection System
GEK-113308
C.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS
APPENDIX C
C
For monitoring the trip circuit while the breaker is open and when it is closed, a resistor must be added in parallel to the
52a contact, as shown below:
VALUE OF RESISTOR R
Supply
Ohms
Watts
48 Vdc
10 K
2
125 Vdc
25 K
5
250 Vdc
50 K
5
A9
A8
A10
TRIP
A5
A6
INP#1
INP#2
COM
TRIP COIL
TRIP
Breaker
Auxiliary
Contact (52a)
+Vdc
R