L30 Line Current Differential System
Table of contents
L30 LINE CURRENT DIFFERENTIAL SYSTEM - INSTRUCTION MANUAL
1.1
1.1.1
1.2
For further assistance .................................................................................... 1-2
2.1
Product description......................................................................................... 2-1
2.1.1
Overview................................................................................................................................... 2-1
2.1.2
Features.................................................................................................................................... 2-3
2.2
Pilot channel relaying ..................................................................................... 2-5
2.2.1
2.2.2
Channel monitor ................................................................................................................... 2-7
2.2.3
Loopback test......................................................................................................................... 2-7
2.2.4
Direct transfer tripping ...................................................................................................... 2-8
2.3
Security.............................................................................................................. 2-8
2.4
Order codes .................................................................................................... 2-11
2.4.1
2.4.2
2.4.3
Replacement modules .....................................................................................................2-22
2.5
Signal processing........................................................................................... 2-24
2.5.1
UR signal processing ........................................................................................................2-24
2.6
Specifications ................................................................................................. 2-26
2.6.1
Protection elements ..........................................................................................................2-27
2.6.2
2.6.3
Monitoring..............................................................................................................................2-33
2.6.4
Metering..................................................................................................................................2-34
2.6.5
Inputs .......................................................................................................................................2-35
2.6.6
Power supply ........................................................................................................................2-36
2.6.7
Outputs....................................................................................................................................2-36
2.6.8
Communication protocols..............................................................................................2-39
2.6.9
2.6.10
CyberSentry security.........................................................................................................2-41
2.6.11
Environmental......................................................................................................................2-41
2.6.12
Type tests ...............................................................................................................................2-42
2.6.13
Production tests ..................................................................................................................2-42
2.6.14
2.6.15
Maintenance.........................................................................................................................2-43
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