GE B30 UR Series Instruction Manual page 7

10. APPLICATION OF
SETTINGS
11. MAINTENANCE
GE Multilin
TABLE OF CONTENTS
9.2 DYNAMIC BUS REPLICA
9.2.1 DYNAMIC BUS REPLICA MECHANISM ........................................................... 9-2
9.2.2 CT RATIO MATCHING ...................................................................................... 9-3
9.3 DIFFERENTIAL PRINCIPLE
9.3.1 BIASED DIFFERENTIAL CHARACTERISTIC ................................................... 9-4
9.3.2 DIFFERENTIAL AND RESTRAINING CURRENTS .......................................... 9-5
9.3.3 ENHANCED SECURITY .................................................................................... 9-6
9.4 DIRECTIONAL PRINCIPLE
9.4.1 CURRENT DIRECTIONAL PROTECTION ........................................................ 9-7
9.5 SATURATION DETECTOR
9.5.1 CT SATURATION DETECTION ........................................................................ 9-8
9.6 OUTPUT LOGIC AND EXAMPLES
9.6.1 OUTPUT LOGIC .............................................................................................. 9-10
9.6.2 INTERNAL AND EXTERNAL FAULT EXAMPLE ............................................ 9-10
10.1 OVERVIEW
10.1.1 INTRODUCTION.............................................................................................. 10-1
10.1.2 SAMPLE BUSBAR AND DATA........................................................................ 10-1
10.2 ZONING AND DYNAMIC BUS REPLICA
10.2.1 DESCRIPTION................................................................................................. 10-3
10.2.2 NORTH BUS ZONE ......................................................................................... 10-3
10.2.3 SOUTH BUS ZONE ......................................................................................... 10-4
10.3 BIASED CHARACTERISTIC BREAKPOINTS
10.3.1 DESCRIPTION................................................................................................. 10-5
10.3.2 HIGH BREAKPOINT ........................................................................................ 10-5
10.3.3 LOW BREAKPOINT......................................................................................... 10-6
10.4 SLOPES AND HIGH SET THRESHOLD
10.4.1 DESCRIPTION................................................................................................. 10-7
10.4.2 EXTERNAL FAULTS ON C-1 .......................................................................... 10-7
10.4.3 EXTERNAL FAULTS ON C-2 .......................................................................... 10-9
10.4.4 EXTERNAL FAULTS ON C-3 .......................................................................... 10-9
10.4.5 EXTERNAL FAULTS ON C-4 ........................................................................ 10-10
10.4.6 EXTERNAL FAULTS ON C-5 ........................................................................ 10-10
10.5 BUS DIFFERENTIAL SETTINGS
10.5.1 DESCRIPTION............................................................................................... 10-11
10.6 ENHANCING RELAY PERFORMANCE
10.6.1 USING SETTING GROUPS........................................................................... 10-12
11.1 MODULES
11.1.1 REPLACE A MODULE..................................................................................... 11-1
11.2 BATTERIES
11.2.1 REPLACE BATTERY....................................................................................... 11-3
11.2.2 DISPOSE OF BATTERY.................................................................................. 11-4
11.3 UNINSTALL AND CLEAR FILES AND DATA
11.3.1 UNINSTALL AND CLEAR FILES AND DATA.................................................. 11-7
11.4 REPAIRS
11.4.1 REPAIRS ......................................................................................................... 11-8
11.5 STORAGE
11.5.1 STORAGE........................................................................................................ 11-9
11.6 DISPOSAL
11.6.1 DISPOSAL ..................................................................................................... 11-10
B30 Bus Differential System vii