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On-panel controls
1- Green LED "ON": power ON
2- Red led "TRIP": alarm status the connection between the
toroidal transformer and the differential relay is continuously
controlled by the latter - if the connection is interrupted, the
differential relay goes into "alarm" status.
3- The "TEST" push-button simulates a fault inside the differential
relay: when the button is pressed, the differential relay must
changeover to alarm status.
4- The "RESET" push-button returns the differential relay to its initial
"non alarm" status.
5- To select tripping steps I n .
6- To select tripping steps in seconds.
1
ON
5
3
2
TEST
TRIP
KΩ
8
4
6
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