GE Multilin
T35 Transformer Protection System
5-135
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. The
pickup threshold should be set 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 5–48: INSTANTANEOUS DIFFERENTIAL SCHEME LOGIC
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
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
Disabled=0
AND
828000A1.CDR
RUN
RUN
RUN
I
ad > PICKUP
I
ad
I
bd
I
cd
I
bd > PICKUP
I
cd > PICKUP
OR
Summary of Contents for T35 UR Series
Page 10: ...x T35 Transformer Protection System GE Multilin TABLE OF CONTENTS ...
Page 48: ...2 18 T35 Transformer Protection System GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 314: ...5 192 T35 Transformer Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 338: ...6 24 T35 Transformer Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 350: ...7 12 T35 Transformer Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 366: ...8 16 T35 Transformer Protection System GE Multilin 8 2 CYBERSENTRY 8 SECURITY 8 ...
Page 406: ...A 14 T35 Transformer Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 540: ...D 10 T35 Transformer Protection System GE Multilin D 1 IEC 60870 5 104 PROTOCOL APPENDIX D D ...
Page 552: ...E 12 T35 Transformer Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 560: ...F 8 T35 Transformer Protection System GE Multilin F 3 WARRANTY APPENDIX F F ...