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GE Multilin
M60 Motor Protection System
5-171
5 SETTINGS
5.6 GROUPED ELEMENTS
5
5.6.4 STATOR DIFFERENTIAL
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
STATOR DIFFERENTIAL
The stator differential protection element is intended for use on the stator windings of rotating machinery.
Figure 5–77: STATOR DIFFERENTIAL CHARACTERISTIC
This element has a dual slope characteristic. The main purpose of the percent-slope characteristic is to prevent a maloper-
ation caused by unbalances between CTs during external faults. CT unbalances arise as a result of the following factors:
1.
CT accuracy errors
STATOR
DIFFERENTIAL
STATOR DIFF
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
STATOR DIFF LINE
END SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
STATOR DIFF NEUTRAL
END SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
STATOR DIFF
PICKUP:
0.100 pu
Range: 0.050 to 1.000 pu in steps of 0.001
MESSAGE
STATOR DIFF
SLOPE 1: 10 %
Range: 1 to 100% in steps of 1
MESSAGE
STATOR DIFF
BREAK 1: 1.15 pu
Range: 1.00 to 1.50 pu in steps of 0.01
MESSAGE
STATOR DIFF
SLOPE 2: 80 %
Range: 1 to 100% in steps of 1
MESSAGE
STATOR DIFF
BREAK 2: 8.00 pu
Range: 1.50 to 30.00 pu in steps of 0.01
MESSAGE
STATOR DIFF
BLK: Off
Range: FlexLogic operand
MESSAGE
STATOR DIFF
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
STATOR DIFF
EVENTS: Disabled
Range: Disabled, Enabled
differ
ential
restraining
Br
eak
1
Br
eak
2
Pickup
Slope 1
Slope 2
Block
Operate
830735A1.CDR
Summary of Contents for M60 UR Series
Page 10: ...x M60 Motor Protection System GE Multilin TABLE OF CONTENTS ...
Page 128: ...4 30 M60 Motor Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 410: ...5 282 M60 Motor Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 440: ...6 30 M60 Motor Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 452: ...7 12 M60 Motor Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 462: ...9 8 M60 Motor Protection System GE Multilin 9 2 BATTERIES 9 MAINTENANCE 9 ...
Page 474: ...A 12 M60 Motor Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 584: ...B 110 M60 Motor Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 614: ...C 30 M60 Motor Protection System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 630: ...E 10 M60 Motor Protection System GE Multilin E 1 IEC 60870 5 104 PROTOCOL APPENDIX E E ...
Page 642: ...F 12 M60 Motor Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Page 644: ...G 2 M60 Motor Protection System GE Multilin G 1 RADIUS SERVER CONFIGURATION APPENDIX G G ...
Page 652: ...H 8 M60 Motor Protection System GE Multilin H 3 WARRANTY APPENDIX H H ...
Page 662: ...x M60 Motor Protection System GE Multilin INDEX ...