GE T60 Instruction Manual page 383

Ur series transformer protection system
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5 SETTINGS
d) NEUTRAL DIRECTIONAL OVERCURRENT (ANSI 67N, IEC PDEF/PTOC)

PATH: SETTINGS
GROUPED ELEMENTS
 NEUTRAL
 DIRECTIONAL OC1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin
Figure 5–111: NEUTRAL IOC1 SCHEME LOGIC
SETTING GROUP 1(6)
NEUTRAL DIR OC1
FUNCTION: Disabled
NEUTRAL DIR OC1
SOURCE: SRC 1
NEUTRAL DIR OC1
POLARIZING: Voltage
NEUTRAL DIR OC1 POL
VOLT: Calculated V0
NEUTRAL DIR OC1 OP
CURR: Calculated 3I0
NEUTRAL DIR OC1 POS-
SEQ RESTRAINT: 0.063
NEUTRAL DIR OC1
OFFSET: 0.00 Ω
NEUTRAL DIR OC1 FWD
ECA: 75° Lag
NEUTRAL DIR OC1 FWD
LIMIT ANGLE: 90°
NEUTRAL DIR OC1 FWD
PICKUP: 0.050 pu
NEUTRAL DIR OC1 REV
LIMIT ANGLE: 90°
NEUTRAL DIR OC1 REV
PICKUP: 0.050 pu
NEUTRAL DIR OC1 BLK:
Off
NEUTRAL DIR OC1
TARGET: Self-reset
NEUTRAL DIR OC1
EVENTS: Disabled
T60 Transformer Protection System
5.6 GROUPED ELEMENTS

NEUTRAL CURRENT
NEUTRAL DIRECTIONAL OC1
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
Range: Voltage, Current, Dual, Dual-V, Dual-I
Range: Calculated V0, Aux. Voltage (VX)
Range: Calculated 3I0, Measured IG
Range: 0.000 to 0.500 in steps of 0.001
Ω
Range: 0.00 to 250.00
Range: –90 to 90° in steps of 1
Range: 40 to 90° in steps of 1
Range: 0.006 to 30.000 pu in steps of 0.001
Range: 40 to 90° in steps of 1
Range: 0.006 to 30.000 pu in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
in steps of 0.01
5-237
5

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