GE Multilin
F60 Feeder Protection System
5-207
5 SETTINGS
5.6 GROUPED ELEMENTS
5
•
NEG SEQ DIR OC1 FWD PICKUP:
This setting defines the pickup level for the overcurrent unit in the forward direc-
tion. Upon
NEG SEQ DIR OC1 TYPE
selection, this pickup threshold applies to zero- or negative-sequence current. When
selecting this setting it must be kept in mind that the design uses a
positive-sequence restraint
technique.
•
NEG SEQ DIR OC1 REV LIMIT ANGLE:
This setting defines a symmetrical (in both directions from the ECA) limit
angle for the reverse direction.
•
NEG SEQ DIR OC1 REV PICKUP:
This setting defines the pickup level for the overcurrent unit in the reverse direc-
tion. Upon
NEG SEQ DIR OC1 TYPE
selection, this pickup threshold applies to zero- or negative-sequence current. When
selecting this setting it must be kept in mind that the design uses a
positive-sequence restraint
technique.
Figure 5–88: NEGATIVE SEQUENCE DIRECTIONAL OC1 SCHEME LOGIC
827091A7.CDR
AND
AND
AND
AND
AND
OR
OR
NOTE:
V_2 is negative-sequence voltage
I_2 is negative-sequence current
I_0 is zero-sequence current
AND
SETTING
Off = 0
Block
SETTING
= Neg Sequence
= Zero Sequence
Type
SETTINGS
Forward Pickup
RUN
( |3I_0| – × |I_1| ) Pickup
K
≥
Positive-Sequence Restraint
TIMER
1.25 cycles
1.5 cycles
FLEXLOGIC OPERAND
NEG SEQ DIR OC1 FWD
SETTING
Enabled = 1
Function
ACTUAL VALUES
V_2
I_2
I_0
RUN
( |I_2| – × |I_1| ) Pickup
K
≥
Voltage Polarization
SETTINGS
Forward ECA
RUN
Forward Limit Angle
Reverse Limit Angle
Offset
Forward
Reverse
SETTINGS
Reverse Pickup
RUN
( |I_2| – × |I_1| ) Pickup
K
≥
Pos Seq Restraint
RUN
( |3I_0| – × |I_1| ) Pickup
K
≥
AND
AND
AND
FLEXLOGIC OPERAND
NEG SEQ DIR OC1 REV
Summary of Contents for F60
Page 10: ...x F60 Feeder Protection System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 F60 Feeder Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 138: ...4 28 F60 Feeder Protection System GE Multilin 4 2 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 454: ...5 316 F60 Feeder Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 500: ...7 14 F60 Feeder Protection System GE Multilin 7 1 COMMANDS 7 COMMANDS AND TARGETS 7 ...
Page 508: ...8 8 F60 Feeder Protection System GE Multilin 8 2 FAULT LOCATOR 8 THEORY OF OPERATION 8 ...
Page 522: ...10 12 F60 Feeder Protection System GE Multilin 10 6 DISPOSAL 10 MAINTENANCE 10 ...
Page 660: ...B 116 F60 Feeder Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 706: ...E 10 F60 Feeder Protection System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Page 718: ...F 12 F60 Feeder Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Page 728: ...H 8 F60 Feeder Protection System GE Multilin H 2 ABBREVIATIONS APPENDIX H H Z Impedance Zone ...
Page 730: ...H 10 F60 Feeder Protection System GE Multilin H 3 WARRANTY APPENDIX H H ...