GE Multilin 750 Quick Reference Manual page 52

Application example
NEUTRAL TIME OC 1
NEUTRAL TIME OC 1
NEUTRAL TIME OC 1
NEUTRAL TIME OC 1
NEUTRAL TIME OC 1
For the Neutral Instantaneous Overcurrent 1 element, enter the following values in the
PROTECTION NEUTRAL CURRENT
page. Press the message down key after each setpoint is completed to move to the next
message.
NEUTRAL INST OC 1
NEUTRAL INST OC 1
NEUTRAL INST OC 1
For the Neutral Instantaneous Overcurrent 2 element, enter the following values in the
PROTECTION NEUTRAL CURRENT
page. Press the message down key after each setpoint is completed to move to the next
message.
NEUTRAL INST OC 2
NEUTRAL INST OC 2
NEUTRAL INST OC 2
The Ground Overcurrent element is disabled by entering the following values in the
PROTECTION GROUND CURRENT
GROUND TIME O/C
GROUND INST O/C
The Negative Sequence Overcurrent elements is disabled by entering the following values
in the S5 PROTECTION
NEG SEQ TIME OVERCURRENT
NEG SEQ INST OVERCURRENT
Using EnerVista 750/760 Setup, select the Setpoints > S5 Protection > Neutral Current
menu item. All setpoints related to neutral current will appear grouped in a single page with
identification tabs as shown below:
Individual pages can also be selected by clicking on the corresponding group from the
menu tree. To set the Neutral Time Overcurrent 1 function:
48
FUNCTION: "Trip"
PICKUP: "0.20 x CT" (from 120 A pickup / 600 A primary)
CURVE: "Mod Inverse"
MULTIPLIER: "10.00"
RESET: "Instantaneous"
NEUTRAL INST OVERCURRENT 1
FUNCTION: "Trip"
PICKUP: "0.20 x CT" (from 120 A pickup / 600 A primary)
DELAY: "0.00 s"
NEUTRAL INST OVERCURRENT 2
FUNCTION: "Trip"
PICKUP: "3.33 x CT" (from 2000 A pickup / 600 A primary)
DELAY: "0.00 s"
GROUND TIME OVERCURRENT
FUNCTION: "Disabled"
FUNCTION: "Disabled"
NEGATIVE SEQUENCE
NEG SEQ TIME OC
NEG SEQ INST OC
setpoints page:
FUNCTION: "Disabled"
FUNCTION: "Disabled"
750/760 Quick Reference Guide
S5
setpoints
S5
setpoints
S5
setpoints page: