6–126
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
S4 CONTROLS
CHAPTER 6: SETPOINTS
CLP BLK FUNCTION
Range: Disabled, Alarm, Latched Alarm
Default: Disabled
If set to Alarm, the alarm LED will flash upon detection of Cold Load Pickup condition,
and will turn off upon clearing the condition. If Latched Alarm setting is selected, the
alarm LED will flash during the Cold Load Pickup condition, and will remain ON, when the
condition is cleared. The Alarm LED turns OFF upon manual or remote reset command.
OUTAGE TIME
Range: 1 to 1000 min in steps of 1 min
Default: 20 min
This timer starts when the feeder is de-energized (currents drop below 3% of CT
nominal). The Cold Load Pickup is armed after its time expiration.
CLP BLOCKING TIME
Range: 1 to 1000 sec in steps of 1 sec
Default: 5 s
This setting sets the time of blocking for the selected instantaneous overcurrent
elements, and the time of raised pickup level of the time overcurrent elements. This timer
starts when currents bigger than 10% of CT nominal are detected.
CLP EXT INITIATE
Range: Off, Contact Input 1 to 10[8], Virtual Input 1 to 32, Remote Input 1 to 32, Logic Input
1 to 16
Default: Off
This setting allows the user to select Contact Input, Virtual Input, Remote Input, or Logic
Element, and force the CLP element into the Cold Load Pickup armed state, bypassing
the timer
Outage Time Before Pickup
.
BLOCK PH IOC1(2)/ BLOCK GND [S.GND] IOC1(2)/ BLOCK NTRL IOC1(2)
/ BLOCK NEG SEQ IOC
Range: No, Yes
Default: No
Each instantaneous over-current element from the list can be selected for block or not,
upon cold load pickup condition.
RAISE PH TOC PKP/ RAISE GND [S.GND] TOC PKP/ RAISE NTRL TOC PKP
Range: 0 to 100% in steps of 1%
Default: 0%
The pickup level of each time over-current element from the list can be raised by 0 to
100%, upon cold load pickup condition.
OUTPUT RELAYS 3 to 6
Range: Do not operate, Operate
Default: Do not operate
Each of the output relays can be programmed to operate when cold load pickup
function is armed.
SELECT SETP GROUP
Range: Active Group, SP Group 1 Active, SP Group 2 Active
Default: Active Group
The CLP blocking function will block the IOC, and adjust the TOC pickup levels for the
over-current elements from whichever Setting Group is active, if the setting Active Group
is selected.
