CHAPTER 5: SETTINGS
GROUPED ELEMENTS
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
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5
Each of the six setting group menus is identical. Setting group 1 (the default active group) is active automatically when no
other group is active.
If the device incorrectly switches to group 1 after power cycling, upgrade the firmware to version 7.31 or later to correct
this issue.
5.7.3 Transformer elements
5.7.3.1 Menu
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
TRANSFORMER
This menu contains the settings for the transformer differential elements and the transformer thermal elements.
The thermal elements include hottest-spot temperature, aging factor and loss of life. The computation of these elements
follows IEEE standards C57.91-1995: “IEEE Guide for Loading Mineral-Oil-Immersed Transformers” and C57.96-1989: “IEEE
Guide for Loading Dry-Type Distribution Transformers”. The computations are based on transformer loading conditions,
ambient temperature, and the entered transformer data.
5.7.3.2 Percent differential (ANSI 87T)
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
TRANSFORMER
PERCENT DIFFERENTIAL
TRANSFORMER
PERCENT
DIFFERENTIAL
See below
INSTANTANEOUS
DIFFERENTIAL
HOTTEST-SPOT
TEMPERATURE
AGING FACTOR
LOSS OF LIFE
PERCENT
DIFFERENTIAL
PERCENT DIFFERENTIAL
FUNCTION: Disabled
Range: Disabled, Enabled
PERCENT DIFFERENTIAL
PICKUP: 0.100 pu
Range: 0.050 to 1.000 pu in steps of 0.001
PERCENT DIFFERENTIAL
SLOPE 1: 25%
Range: 15 to 100% in steps of 1
PERCENT DIFFERENTIAL
BREAK 1: 2.000 pu
Range: 1.000 to 2.000 pu in steps of 0.001
PERCENT DIFFERENTIAL
BREAK 2: 8.000 pu
Range: 2.000 to 30.000 pu in steps of 0.001
PERCENT DIFFERENTIAL
SLOPE 2: 90%
Range: 50 to 100% in steps of 1
INRUSH INHIBIT
FUNCTION: Adapt. 2nd
Range: Disabled, Adapt. 2nd, Trad. 2nd
INRUSH INHIBIT
MODE: Per phase
Range: Per phase, 2-out-of-3, Average, 1-out-of-3
INRUSH INHIBIT
LEVEL: 20.0% fo
Range: 1.0 to 40.0% of f
0
in steps of 0.1
OVEREXCITN INHIBIT
FUNCTION: Disabled
Range: Disabled, 5th
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Страница 14: ...1 4 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 202: ...4 88 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 472: ...5 270 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 500: ...6 28 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL PRODUCT INFORMATION CHAPTER 6 ACTUAL VALUES 6 ...
Страница 514: ...7 14 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
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Страница 588: ...C 6 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
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