GE L60 Instruction Manual page 330

5.5 GROUPED ELEMENTS
The positive-sequence restraint must be considered when testing for pickup accuracy and response time (multiple of
pickup). The operating quantity depends on how test currents are injected into the relay (single-phase injection:
I 0.9375xI
=
op injected
d) NEUTRAL DIRECTIONAL OVERCURRENT (ANSI 67N, IEC PDEF/PTOC)

PATH: SETTINGS GROUPED ELEMENTS
 NEUTRAL
 DIRECTIONAL OC1
5
5-198
; three-phase pure zero-sequence injection:
Figure 5–96: NEUTRAL IOC1 SCHEME LOGIC

SETTING GROUP 1(6)
NEUTRAL DIR OC1
FUNCTION: Disabled
NEUTRAL DIR OC1
MESSAGE
SOURCE: SRC 1
NEUTRAL DIR OC1
MESSAGE
POLARIZING: Voltage
NEUTRAL DIR OC1 POL
MESSAGE
VOLT: Calculated V0
NEUTRAL DIR OC1 OP
MESSAGE
CURR: Calculated 3I0
NEUTRAL DIR OC1 POS-
MESSAGE
SEQ RESTRAINT: 0.063
NEUTRAL DIR OC1
MESSAGE
OFFSET: 0.00 Ω
NEUTRAL DIR OC1 FWD
MESSAGE
ECA: 75° Lag
NEUTRAL DIR OC1 FWD
MESSAGE
LIMIT ANGLE: 90°
NEUTRAL DIR OC1 FWD
MESSAGE
PICKUP: 0.050 pu
NEUTRAL DIR OC1 REV
MESSAGE
LIMIT ANGLE: 90°
NEUTRAL DIR OC1 REV
MESSAGE
PICKUP: 0.050 pu
NEUTRAL DIR OC1 BLK:
MESSAGE
Off
L60 Line Phase Comparison System
×
I 3 I ).
=
op injected
 
NEUTRAL CURRENT NEUTRAL DIRECTIONAL OC1(2)
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: Voltage, Current, Dual, Dual-V, Dual-I
Range: Calculated V0, Measured VX
Range: Calculated 3I0, Measured IG
Range: 0.000 to 0.500 in steps of 0.001
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
5 SETTINGS
Ω
in steps of 0.01
GE Multilin