GE T60 Instruction Manual page 222

5.5 GROUPED ELEMENTS
c) GROUND INSTANTANEOUS OVERCURRENT (ANSI 50G)
PATH: SETTINGS
GROUND IOC1
5
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.
NOTE
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.
NOTE
5-126
Courtesy of NationalSwitchgear.com
GROUPED ELEMENTS SETTING GROUP 1(6)
GROUND IOC1
FUNCTION: Disabled
GROUND IOC1 SIGNAL
MESSAGE
SOURCE: SRC 1
GROUND IOC1
MESSAGE
PICKUP:
GROUND IOC1 PICKUP
MESSAGE
DELAY:
GROUND IOC1 RESET
MESSAGE
DELAY:
GROUND IOC1 BLOCK:
MESSAGE
Off
GROUND IOC1
MESSAGE
TARGET: Self-reset
GROUND IOC1
MESSAGE
EVENTS: Disabled
SETTING
GROUND IOC1
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
GROUND IOC1
AND
SOURCE:
IG
SETTING
GROUND IOC1
BLOCK:
Off = 0
Figure 5–59: GROUND IOC1 SCHEME LOGIC
T60 Transformer Management Relay
GROUND CURRENT
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.000 to 30.000 pu in steps of 0.001
1.000 pu
Range: 0.00 to 600.00 s in steps of 0.01
0.00 s
Range: 0.00 to 600.00 s in steps of 0.01
0.00 s
Range: FlexLogic™ operand
Range: Self-reset, Latched
Range: Disabled, Enabled
SETTINGS
GROUND IOC1 PICKUP
SETTING
DELAY:
GROUND IOC1
GROUND IOC1 RESET
PICKUP:
DELAY:
RUN
t
PKP
IG ≥ PICKUP
t
RST
5 SETTINGS
GROUND IOC1(8)
,
Disabled
FLEXLOGIC OPERANDS
GROUND IOC1 PKP
GROUND IOIC DPO
GROUND IOC1 OP
827037A4.VSD
GE Multilin