xvi 7SA6 Manual
C53000-G1176-C156-2
9.3 Maintenance........................................................................................................................9-4
9.3.1 Replacing the Buffer Battery................................................................................................9-4
9.3.1.1 Battery Change on Devices with Panel Flush Mounting and Cubicle Flush Mounting as well as
Panel Surface Mounting ......................................................................................................9-4
9.3.1.2 Battery Change on Devices with Mounting Housing with Detached Operator Panel ..........9-6
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 Protection Data Interface and Distance Protection Topology
(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
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