GE Multilin
T60 Transformer Protection System
5-219
5 SETTINGS
5.6 GROUPED ELEMENTS
5
c) INSTANTANEOUS DIFFERENTIAL
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
TRANSFORMER
INSTANTANEOUS DIFFERENTIAL
The instantaneous differential element acts as an instantaneous overcurrent element responding to the measured differen-
tial current magnitude (filtered fundamental frequency component) and applying a user-selectable pickup threshold. Set the
pickup threshold greater than the maximum spurious differential current that could be encountered under non-internal fault
conditions (typically magnetizing inrush current or an external fault with extremely severe CT saturation).
Figure 5–101: INSTANTANEOUS DIFFERENTIAL SCHEME LOGIC
d) HOTTEST-SPOT TEMPERATURE
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
TRANSFORMER
HOTTEST-SPOT TEMPERATURE
INSTANTANEOUS
DIFFERENTIAL
INST DIFFERENTIAL
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
INST DIFFERENTIAL
PICKUP: 8.000
pu
Range: 2.000 to 30.000 pu in steps of 0.001
MESSAGE
INST DIFF BLOCK:
Off
Range: FlexLogic operand
MESSAGE
INST DIFFERENTIAL
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
INST DIFFERENTIAL
EVENTS: Disabled
Range: Disabled, Enabled
HOTTEST-SPOT
TEMPERATURE
XFMR HST FUNCTION:
Disabled
Range: Disabled, Enabled
MESSAGE
XFMR HST PICKUP:
140°C
Range: 50 to 300°C in steps of 1
MESSAGE
XFMR HST DELAY:
1 min.
Range: 0 to 30000 min. in steps of 1
MESSAGE
XFMR HST BLOCK:
Off
Range: FlexLogic operand
MESSAGE
XFMR HST TARGET:
Self-Reset
Range: Self-reset, Latched, Disabled
SETTING
ACTUAL VALUE
SETTING
SETTING
FLEXLOGIC OPERAND
FLEXLOGIC OPERANDS
INST DIFFERENTIAL
FUNCTION:
DIFF PHASOR
INST DIFF BLOCK:
INST DIFFERENTIAL
PICKUP:
XFMR INST DIFF OP
XFMR INST DIFF OP C
XFMR INST DIFF OP B
XFMR INST DIFF OP A
Off=0
Enabled=1
AND
828000A2.CDR
RUN
RUN
RUN
Iad > PICKUP
Iad
Ibd
Icd
Ibd > PICKUP
Icd > PICKUP
OR
Summary of Contents for T60
Page 6: ...vi T60 Transformer Protection System GE Multilin TABLE OF CONTENTS ...
Page 14: ...xiv T60 Transformer Protection System GE Multilin TABLE OF CONTENTS ...
Page 34: ...1 20 T60 Transformer Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 490: ...5 344 T60 Transformer Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 522: ...6 32 T60 Transformer Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 536: ...7 14 T60 Transformer Protection System GE Multilin 7 1 COMMANDS 7 COMMANDS AND TARGETS 7 ...
Page 568: ...10 12 T60 Transformer Protection System GE Multilin 10 6 DISPOSAL 10 MAINTENANCE 10 ...
Page 596: ...A 28 T60 Transformer Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 716: ...B 120 T60 Transformer Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 762: ...E 10 T60 Transformer Protection System GE Multilin E 1 IEC 60870 5 104 PROTOCOL APPENDIX E E ...
Page 774: ...F 12 T60 Transformer Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...