ABB RD3P Manual page 18

Functions
Pre-alarm → by moving the dip-switch to ON the pre-alarm function is
activated: the output contacts marked by terminals 7 8 9 will switch if a
differential above 60% I∆ occurs.
Pre Alarm
Autoreset
Autoreset → by moving the dip-switch to ON the automatic reset function
is activated: the Relay OuTPuT contacts will revert to the stand-by status
when the fault status ends.
Pre Alarm
Autoreset
BB_76x88mm_Rd3P_rev4.indd 18
OFF ON
OFF ON
7 8 9
OUTPUT Relay
Prealarm / TRIP
7 8 9
OUTPUT Relay
Prealarm / TRIP
18
10 11 12
ON
10 11 12
FAIL SAFE
OUTPUT Relay
TRIP
19/09/11 11:04