Table of Contents
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9.3
Maintenance ........................................................................................................................ 9-4
9.3.1
Replacing the Buffer Battery................................................................................................ 9-4
9.3.1.1
Panel Surface Mounting ...................................................................................................... 9-4
9.3.1.2
9.4
Troubleshooting ................................................................................................................... 9-9
9.5
Corrective Action / Repairs ................................................................................................ 9-12
9.5.1
Software Procedures ......................................................................................................... 9-12
9.5.2
Hardware Procedures........................................................................................................ 9-12
9.6
Return ................................................................................................................................ 9-16
10
Technical Data................................................................................................................................. 10-1
10.1
General Device Data ......................................................................................................... 10-2
10.1.1
Analog Inputs..................................................................................................................... 10-2
10.1.2
Power Supply..................................................................................................................... 10-2
10.1.3
Binary Inputs and Outputs ................................................................................................. 10-3
10.1.4
Communications Interfaces ............................................................................................... 10-6
10.1.5
Electrical Tests .................................................................................................................. 10-9
10.1.6
Mechanical Stress Tests.................................................................................................. 10-11
10.1.7
Climatic Stress Tests ....................................................................................................... 10-12
10.1.8
Service Conditions........................................................................................................... 10-12
10.1.9
Certifications .................................................................................................................... 10-13
10.1.10 Construction..................................................................................................................... 10-13
10.2
Distance Protection.......................................................................................................... 10-15
10.3
Power Swing Supplement (optional)................................................................................ 10-18
10.4
Distance Protection Teleprotection Schemes.................................................................. 10-18
10.5
Earth Fault Protection in Earthed Systems (optional)...................................................... 10-19
10.6
Earth Fault Protection Teleprotection Schemes (optional) .............................................. 10-27
10.7
Weak-Infeed Tripping ...................................................................................................... 10-28
10.8
(optional).......................................................................................................................... 10-29
10.9
External Direct and Remote Tripping............................................................................... 10-30
10.10
Overcurrent Protection..................................................................................................... 10-30
10.11
High-Current Switch-On-To-Fault Protection................................................................... 10-33
10.12
Earth Fault Detection in a Non-Earthed System.............................................................. 10-33
10.13
Automatic Reclosure Function (optional)......................................................................... 10-34
10.14
Synchronism and Voltage Check (optional)..................................................................... 10-35
10.15
Voltage Protection (optional) ........................................................................................... 10-36
xvi
7SA6 Manual
C53000-G1176-C156-2
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