GE G60

5-198 G60 Generator Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
c) GROUND INSTANTANEOUS OVERCURRENT (ANSI 50G, IEC PIOC)
PATH: SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  GROUND CURRENT  GROUND IOC1
The ground instantaneous overcurrent element may be used as an instantaneous element with no intentional delay or as a
definite time element. The ground current input is the quantity measured by the ground input CT and is the fundamental
phasor magnitude.
These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion
range of a standard channel is from 0.02 to 46 times the CT rating.
This channel may be equipped with a standard or sensitive input. The conversion range of a sensitive channel is
from 0.002 to 4.6 times the CT rating.
Figure 5–94: GROUND IOC1 SCHEME LOGIC
 GROUND IOC1

GROUND IOC1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
GROUND IOC1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
GROUND IOC1
PICKUP: 1.000 pu
Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
GROUND IOC1 PICKUP
DELAY: 0.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
GROUND IOC1 RESET
DELAY: 0.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
GROUND IOC1 BLOCK:
Off
Range: FlexLogic operand
MESSAGE
GROUND IOC1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
GROUND IOC1
EVENTS: Disabled
Range: Disabled, Enabled
NOTE
NOTE
SETTING
GROUND IOC1
FUNCTION:
Enabled = 1
SETTING
GROUND IOC1
SOURCE:
IG
GROUND IOC1
BLOCK:
Off = 0
FLEXLOGIC OPERANDS
GROUND IOIC DPO
GROUND IOC1 OP
SETTING
SETTING
IG PICKUP
GROUND IOC1
PICKUP:
RUN
GROUND IOC1 PICKUP
DELAY:
SETTINGS
GROUND IOC1 RESET
DELAY:
t
PKP
t
RST
827037A5.VSD
AND
GROUND IOC1 PKP