GE L60 Instruction Manual page 8

7. COMMANDS AND
TARGETS
8. THEORY OF OPERATION
9. APPLICATION OF
SETTINGS
viii
TABLE OF CONTENTS
6.2.9 DIGITAL COUNTERS.........................................................................................6-6
6.2.10 SELECTOR SWITCHES ....................................................................................6-6
6.2.11 FLEX STATES ....................................................................................................6-6
6.2.12 ETHERNET ........................................................................................................6-6
6.2.13 DIRECT INPUTS ................................................................................................6-7
6.2.14 DIRECT DEVICES STATUS ..............................................................................6-7
6.2.15 TELEPROTECTION CHANNEL TESTS.............................................................6-8
6.3 METERING
6.3.1 METERING CONVENTIONS .............................................................................6-9
6.3.2 SOURCES ........................................................................................................6-12
6.3.3 SYNCHROCHECK ...........................................................................................6-14
6.3.4 TRACKING FREQUENCY................................................................................6-14
6.3.5 FLEXELEMENTS™ ..........................................................................................6-15
6.3.6 TRANSDUCER INPUTS/OUTPUTS.................................................................6-15
6.4 RECORDS
6.4.1 FAULT REPORTS ............................................................................................6-16
6.4.2 EVENT RECORDS ...........................................................................................6-18
6.4.3 OSCILLOGRAPHY ...........................................................................................6-18
6.4.4 DATA LOGGER ................................................................................................6-18
6.4.5 BREAKER MAINTENANCE .............................................................................6-19
6.5 PRODUCT INFORMATION
6.5.1 MODEL INFORMATION ...................................................................................6-20
6.5.2 FIRMWARE REVISIONS..................................................................................6-20
7.1 COMMANDS
7.1.1 COMMANDS MENU ...........................................................................................7-1
7.1.2 VIRTUAL INPUTS ..............................................................................................7-1
7.1.3 CLEAR RECORDS .............................................................................................7-1
7.1.4 SET DATE AND TIME ........................................................................................7-2
7.1.5 RELAY MAINTENANCE .....................................................................................7-2
7.2 TARGETS
7.2.1 TARGETS MENU ...............................................................................................7-3
7.2.2 TARGET MESSAGES ........................................................................................7-3
7.2.3 RELAY SELF-TESTS .........................................................................................7-3
8.1 OVERVIEW
8.1.1 INTRODUCTION ................................................................................................8-1
8.1.2 FUNDAMENTAL PRINCIPLE OF PHASE COMPARISON ................................8-1
8.1.3 VARIATIONS IN PHASE COMPARISON SCHEMES ........................................8-6
8.1.4 PHASE COMPARISON EXCITATION................................................................8-6
8.1.5 BLOCKING VS. TRIPPING SCHEMES............................................................8-10
8.1.6 SINGLE VS. DUAL PHASE COMPARISON.....................................................8-18
8.1.7 REFINEMENTS TO BASIC SCHEMES............................................................8-20
8.1.8 MULTI-TERMINAL LINES ................................................................................8-23
8.2 SINGLE-POLE TRIPPING
8.2.1 OVERVIEW ......................................................................................................8-24
8.2.2 PHASE SELECTION ........................................................................................8-27
9.1 PHASE COMPARISON ELEMENT 87PC
9.1.1 DESCRIPTION ...................................................................................................9-1
9.1.2 USE OF SETTINGS ...........................................................................................9-1
9.1.3 SETTINGS EXAMPLE ........................................................................................9-3
9.2 DISTANCE BACKUP/SUPERVISION
9.2.1 DESCRIPTION ...................................................................................................9-4
9.2.2 LINES WITH TAPPED TRANSFORMERS.........................................................9-5
9.2.3 TRANSFORMER LOAD CURRENTS ................................................................9-5
L60 Line Phase Comparison Relay GE Multilin