6–98
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION
CHAPTER 6: SETPOINTS
RLY1 TRIP W1 BKR and RLY2 TRIP W2 BKR
Range: Do Not Operate, Operate
Default: Do Not Operate
The menu for the two trip output relays - RLY1 TRIP W1 BKR and RLY2 TRIP W2 BKR - is
available only if the
Trip
setting is selected as a function for the Ground IOC element.
One or both trip output relays can be selected to operate under the operating condition.
NOTE
NOTE:
The "RLY1 TRIP W1 BKR" and "RLY2 TRIP W2 BKR" setpoints will be displayed on the OC
menu regardless of the selected OC function. These output relays will not operate if
either
Alarm
or
Latched Alarm
is selected as an OC function, regardless of the Operate/
Do Not Operate value selected. The output relays are operational only if the OC function
is selected as
Trip
.
OUTPUT RELAY 3 to 6
Range: Do not operate, Operate
Default: Do not operate
Any, or all, of the output relays 3 to 6 can be selected to operate upon ground IOC
operation. The selection of relay outputs operation is available no matter whether the
Latched Alarm
,
Alarm
, or
Trip
function is selected.
BLOCK 1/2/3
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Element 1 to 16
Default: Off
Three blocking inputs are provided in the Ground IOC menu. When any of the selected
blocking inputs - Contact input, Virtual Input, Remote Input, or Logic Element - turns on,
the ground IOC function is blocked.