5-28
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
PRODUCT SETUP
CHAPTER 5: SETTINGS
5
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. As well, the three-phase energy data do not accumulate if
the total power from all three phases does not exceed the power cut-off.
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 and the event record pages are not configurable.
5.3.3.1 Home page
This page sets the display on the home page and the date and time formats for all pages. Options include display of
product information, alarms, actual values, and event records.
The path is
Settings > Product Setup > Graphical Panel > Home Page
. The menu does not display when there is no
graphical front panel.
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 L30
Страница 10: ...x L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 126: ...3 68 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL CONNECT TO D400 GATEWAY CHAPTER 3 INSTALLATION 3 ...
Страница 214: ...4 88 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 582: ...7 16 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 598: ...9 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 9 COMMISSIONING 9 ...
Страница 622: ...10 24 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FAULT LOCATOR CHAPTER 10 THEORY OF OPERATION 10 ...
Страница 670: ...A 18 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 678: ...C 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 682: ...D 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX D MISCELLANEOUS D ...
Страница 686: ...iv L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...