GE Multilin
TABLE OF CONTENTS
7.1.5
RELAY MAINTENANCE .................................................................................... 7-3
7.1.6
7.1.7
SECURITY ......................................................................................................... 7-5
7.1.8
TARGETS MENU............................................................................................... 7-6
7.1.9
TARGET MESSAGES ....................................................................................... 7-6
7.1.10
RELAY SELF-TESTS......................................................................................... 7-6
8.1.1
L30 DESIGN ...................................................................................................... 8-1
8.1.2
L30 ARCHITECTURE ........................................................................................ 8-1
8.1.3
8.1.4
PHASELET COMPUTATION............................................................................. 8-2
8.1.5
8.1.6
FAULT DETECTION .......................................................................................... 8-3
8.1.7
8.1.8
8.1.9
8.1.10
FREQUENCY DETECTION ............................................................................... 8-7
8.1.11
PHASE DETECTION ......................................................................................... 8-7
8.1.12
PHASE LOCKING FILTER .............................................................................. 8-10
8.1.13
MATCHING PHASELETS................................................................................ 8-11
8.1.14
START-UP ....................................................................................................... 8-11
8.1.15
8.1.16
8.1.17
8.1.18
8.1.19
8.1.20
8.2.1
DESCRIPTION................................................................................................. 8-16
8.2.2
8.2.3
TRIP DECISION TEST .................................................................................... 8-18
8.3.1
DESCRIPTION................................................................................................. 8-20
9.1.1
INTRODUCTION................................................................................................ 9-1
9.1.2
9.2.1
INTRODUCTION................................................................................................ 9-4
9.2.2
9.2.3
9.2.4
9.2.5
9.2.6
CT TAP .............................................................................................................. 9-5
9.3.1
DESCRIPTION................................................................................................... 9-7
9.3.2
9.3.3
9.3.4
9.4.1
10.1.1
CHANNEL TESTING ....................................................................................... 10-1
10.1.2
10.1.3
CURRENT DIFFERENTIAL ............................................................................. 10-3
L30 Line Current Differential System
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