CHAPTER 5: SETTINGS
PRODUCT SETUP
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
5-27
5
For Wye connections:
Eq. 5-4
Eq. 5-5
where VT primary = VT secondary
×
VT ratio and CT primary = CT secondary
×
CT ratio.
For example, given the following settings:
CURRENT CUT-OFF LEVEL
: “0.02 pu”
VOLTAGE CUT-OFF LEVEL
: “1.0 V”
PHASE CT PRIMARY
: “100 A”
PHASE VT SECONDARY
: “66.4 V”
PHASE VT RATIO
: “208.00 : 1"
PHASE VT CONNECTION
: “Delta”
We have:
CT primary = “100 A”, and
VT primary =
PHASE VT SECONDARY
x
PHASE VT RATIO
= 66.4 V x 208 = 13811.2 V
The power cut-off is therefore:
power cut-off= (
CURRENT CUT-OFF LEVEL
×
V
OLTAGE CUT-OFF LEVEL
×
CT primary
×
VT primary)/VT secondary
= (
×
0.02 pu
×
1.0 V
×
100 A
×
13811.2 V) / 66.4 V
= 720.5 watts
Any calculated power value below this cut-off does not display.
5.3.3 Graphical front panel
Use the EnerVista software to configure the graphical front panel. The settings are not accessible from the graphical front
panel.
The following screens are available:
•
Home page
•
Rolling mode
•
Metering editor
•
Single-line diagram editor
•
Annunciator editor
•
Configurable navigation
The settings menu itself and the event record pages are not configurable.
Multiple screens can be opened in the EnerVista software, but the first remains active and the others can be read-only. For
example, the Annunciator Editor and Single Line Diagram Editor can be open and active, then subsequently opened Rolling
Mode and Home Page screens are read-only. Close the windows, then re-open the one required.
Lower the
VOLTAGE CUT-OFF LEVEL
and
CURRENT CUT-OFF LEVEL
with care as the relay accepts lower signals as valid
measurements. Unless dictated otherwise by a specific application, the default settings of “0.02 pu” for
CURRENT
CUT-OFF LEVEL
and “1.0 V” for
VOLTAGE CUT-OFF LEVEL
are recommended.
The graphical front panel is a hardware option. See the Order Codes section in chapter 2 for details.
Содержание D30 series
Страница 10: ...x D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 52: ...2 38 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL SPECIFICATIONS CHAPTER 2 PRODUCT DESCRIPTION 2 ...
Страница 534: ...5 324 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 564: ...6 30 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL PRODUCT INFORMATION CHAPTER 6 ACTUAL VALUES 6 ...
Страница 578: ...7 14 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 614: ...9 26 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL FAULT LOCATOR CHAPTER 9 THEORY OF OPERATION 9 ...
Страница 654: ...A 10 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 662: ...C 6 D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 670: ...iv D30 LINE DISTANCE PROTECTION SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...
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