5-220
T60 Transformer Protection System
GE Multilin
5.6 GROUPED ELEMENTS
5 SETTINGS
5
The Hottest-Spot Temperature element provides a mechanism for detecting abnormal winding hottest-spot temperatures
inside the transformer. It can be set to alarm or trip in cases where the computed hottest-spot temperature is above the
pickup threshold for a user-specified time (considered as transformer overheating).
•
XFMR HST PICKUP
: Enter the hottest-spot temperature required for operation of the element. This setting should be
based on the maximum permissible hottest-spot temperature under emergency transformer loading conditions and
maximum ambient temperature.
•
XFMR HST DELAY
: Enter an appropriate time delay before operation of the element.
Figure 5–102: TRANSFORMER HOTTEST-SPOT TEMPERATURE LOGIC
e) AGING FACTOR
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
TRANSFORMER
AGING FACTOR
The Aging Factor element detects transformer aging in per-unit normal insulation aging. The element can be set for alarm
or trip whenever the computed aging factor is greater than the user-defined pickup setting for the specified time delay.
•
AGING FACTOR PICKUP
: Enter a value above which the aging factor element will operate. Enter a setting greater
than the maximum permissible aging factor under emergency loading conditions and maximum ambient temperature.
AGING FACTOR
AGING FACTOR
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
AGING FACTOR PICKUP:
2.0 pu
Range: 1.1 to 10.0 pu in steps of 0.1
MESSAGE
AGING FACTOR
DELAY:
10 min.
Range: 0 to 30000 min. in steps of 1
MESSAGE
AGING FACTOR BLOCK:
Off
Range: FlexLogic operand
MESSAGE
AGING FACTOR TARGET:
Self-Reset
Range: Self-reset, Latched, Disabled
SETTING
SETTING
ACTUAL VALUE
SETTINGS
FLEXLOGIC OPERANDS
HOTTEST-SPOT t°
FUNCTION:
HOTTEST-SPOT t°
BLOCK:
HOTTEST-SPOT t°
XFMR HST-SPOT t°C OP
XFMR HST-SPOT t°C DPO
XFMR HST-SPOT t°C PKP
Enable=1
Off=0
HOTTEST-SPOT t°
PICKUP:
HOTTEST-SPOT t°
PICKUP TIME DELAY:
RUN
t°C > PKP
t
PKP
828731A4.cdr
AND
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 ...