GE D90 Plus Instruction Manual page 9

TABLE OF CONTENTS
16 MAINTENANCE
17 APPENDIX
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM - INSTRUCTION MANUAL
Dynamic reach control .......................................................................................................................... 650
Single-pole tripping................................................................................................... 652
SLG fault scenario for single-pole tripping ................................................................................... 654
SLG fault evolving into an LLG fault scenario for single-pole tripping ............................ 655
Phase selection.......................................................................................................................................... 656
Communications channels for pilot-aided schemes............................................................... 657
Permissive echo signaling .................................................................................................................... 664
Pilot scheme and phase selector coordination.......................................................................... 665
Cross-country fault example .............................................................................................................. 666
General maintenance ............................................................................................... 669
Back up and restore settings .................................................................................. 669
Back up settings........................................................................................................................................ 669
Restore settings......................................................................................................................................... 670
Upgrade software ..................................................................................................... 670
Upgrade firmware ..................................................................................................... 671
Uninstall and clear files and data .......................................................................... 672
Repairs......................................................................................................................... 672
Storage ........................................................................................................................ 672
Disposal....................................................................................................................... 673
Warranty..................................................................................................................... 675
Revision history ......................................................................................................... 675
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