GE Multilin
L90 Line Current Differential System
5-207
5 SETTINGS
5.6 GROUPED ELEMENTS
5
5.6.10 WATTMETRIC GROUND FAULT
a) WATTMETRIC ZERO-SEQUENCE DIRECTIONAL
(ANSI 32N, IEC PSDE)
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
WATTMETRIC...
WATTMETRIC GROUND FAULT 1(2)
The wattmetric zero-sequence directional element responds to power derived from zero-sequence voltage and current in a
direction specified by the element characteristic angle. The angle can be set within all four quadrants and the power can be
active or reactive. Therefore, the element may be used to sense either forward or reverse ground faults in either inductive,
capacitive or resistive networks. The inverse time characteristic allows time coordination of elements across the network.
Typical applications include ground fault protection in solidly grounded transmission networks, grounded/ungrounded/resis-
tor-grounded/resonant-grounded distribution networks, or for directionalizing other non-directional ground elements.
•
WATTMETRIC GND FLT 1 VOLT
: The element uses neutral voltage (that is, three times the zero-sequence voltage).
This setting allows selecting between the internally calculated neutral voltage, or externally supplied voltage (broken
delta VT connected to the auxiliary channel bank of the relay). When the latter selection is made, the auxiliary channel
must be identified by the user as a neutral voltage under the VT bank settings. This element operates when the auxil-
iary voltage is configured as neutral.
WATTMETRIC
GROUND FAULT 1
WATTMETRIC GND FLT 1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
WATTMETRIC GND FLT 1
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
WATTMETRIC GND FLT 1
VOLT: Calculated VN
Range: Calculated VN, Measured VX
MESSAGE
WATTMETRIC GND FLT 1
OV PKP: 0.20 pu
Range: 0.02 to 3.00 pu in steps of 0.01
MESSAGE
WATTMETRIC GND FLT 1
CURR: Calculated IN
Range: Calculated IN, Measured IG
MESSAGE
WATTMETRIC GND FLT 1
OC PKP: 0.060 pu
Range: 0.002 to 30.000 pu in steps of 0.001
MESSAGE
WATTMETRIC GND FLT 1
OC PKP DEL: 0.20 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
WATTMETRIC GND FLT 1
PWR PKP: 0.100 pu
Range: 0.001 to 1.200 pu in steps of 0.001
MESSAGE
WATTMETRIC GND FLT 1
REF PWR: 0.500 pu
Range: 0.001 to 1.200 pu in steps of 0.001
MESSAGE
WATTMETRIC GND FLT 1
ECA: 0° Lag
Range: 0 to 360° Lag in steps of 1
MESSAGE
WATTMETRIC GND FLT 1
PWR PKP DEL: 0.20 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
WATTMETRIC GND FLT 1
CURVE: Definite Time
Range: Definite Time, Inverse, FlexCurves A through D
MESSAGE
WATTMETRIC GND FLT 1
MULTIPLIER: 1.00 s
Range: 0.01 to 2.00 s in steps of 0.01
MESSAGE
WATT GND FLT 1 BLK:
Off
Range: FlexLogic operand
MESSAGE
WATTMETRIC GND FLT 1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
WATTMETRIC GND FLT 1
EVENTS: Disabled
Range: Disabled, Enabled
Summary of Contents for UR Series L90
Page 652: ...A 16 L90 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 772: ...B 120 L90 Line Current Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 802: ...C 30 L90 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 812: ...D 10 L90 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 824: ...E 12 L90 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 834: ...F 10 L90 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 846: ...xii L90 Line Current Differential System GE Multilin INDEX ...