Siemens siprotec 7SA6 User Manual page 14

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
8.3.9 Earth Fault Check in a Non-earthed System ..................................................................... 8-52
8.3.10 Polarity Check for the Current Measuring Input I
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
xiv
4 .................................................................................................... 8-50
4 .............................................................................. 8-53
7SA6 Manual
C53000-G1176-C133-1