Siemens siprotec 7SA6 User Manual

xiv 7SA6 Manual
C53000-G1176-C133-1
8.1.3.5 Reassembly of Device....................................................................................................... 8-35
8.2 Checking the Connections................................................................................................. 8-36
8.2.1 Data Connections.............................................................................................................. 8-36
8.2.2 Checking Power Plant Connections ..................................................................................8-38
8.3 Commissioning ..................................................................................................................8-40
8.3.1 Testing mode and transmission blocking...........................................................................8-41
8.3.2 Checking the System (SCADA) Interface.......................................................................... 8-41
8.3.3 Checking the Binary Inputs and Outputs ........................................................................... 8-43
8.3.4 Checking Analog Outputs..................................................................................................8-45
8.3.5 Tests for the Circuit Breaker Failure Protection................................................................. 8-45
8.3.6 Current, Voltage, and Phase Rotation Checks..................................................................8-48
8.3.7 Directional Checks with Load Current ...............................................................................8-49
8.3.8 Polarity check for the voltage input U
4 ....................................................................................................8-50
8.3.9 Earth Fault Check in a Non-earthed System .....................................................................8-52
8.3.10 Polarity Check for the Current Measuring Input I
4 ..............................................................................8-53
8.3.11 Measuring the operating time of the circuit breaker........................................................... 8-57
8.3.12 Testing of the Teleprotection System ................................................................................8-58
8.3.12.1 Teleprotection with Distance Protection ............................................................................8-58
8.3.12.2 Teleprotection with Earth Fault Protection.........................................................................8-61
8.3.12.3 Transfer Trip Signal Transmission for Breaker Failure Protection and/or Stub Protection 8-63
8.3.12.4 Signal Transmission for Intertripping and Direct Transfer Tripping ...................................8-63
8.3.13 Testing User-Defined Functions ........................................................................................ 8-64
8.3.14 Trip and Close Test with the Circuit Breaker ..................................................................... 8-64
8.3.15 Switching Check for the Configured Operating Devices.................................................... 8-64
8.3.16 Triggering Oscillographic Recordings................................................................................8-65
8.4 Final Preparation of the Device ......................................................................................... 8-67
9 Routine Checks and Maintenance...................................................................................................9-1
9.1 General................................................................................................................................9-2
9.2 Routine Checks ...................................................................................................................9-3
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 Mounting9-4
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

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English