xiii7SS52 V4 Manual
C53000-G1176-C182-1
6.4 Feeder Shutdown and Commissioning............................................................................... 236
6.5 Maintenance Mode.............................................................................................................239
6.6 Plant Visualization .............................................................................................................. 241
7 Installation and Commissioning .................................................................................................... 245
7.1 Installation and Commissioning.......................................................................................... 246
7.1.1 Central Unit ........................................................................................................................ 246
7.1.2 Bay Unit.............................................................................................................................. 247
7.1.3 General Information on the 2-Bay Bus Coupler.................................................................. 248
7.1.3.1 General............................................................................................................................... 248
7.1.3.2 2-Bay Bus Coupler With 2 Current Transformers............................................................... 249
7.1.3.3 2-Bay Bus Coupler With one Current Transformer............................................................. 249
7.1.3.4 Connection ......................................................................................................................... 249
7.2 Checking the Connections.................................................................................................. 251
7.3 Commissioning .................................................................................................................. 252
7.3.1 How to Proceed.................................................................................................................. 253
7.3.2 Web Monitor ....................................................................................................................... 254
7.3.2.1 General............................................................................................................................... 254
7.3.2.2 Functions............................................................................................................................ 255
7.3.2.3 Operating Modes................................................................................................................ 260
7.3.3 Checking the Switching States of the binary Inputs/Outputs.............................................. 262
7.3.3.1 Central Unit ........................................................................................................................ 262
7.3.3.2 Bay Unit.............................................................................................................................. 264
7.3.4 Testing the System Port ..................................................................................................... 266
7.3.5 Control of the Isolator Replica ............................................................................................268
7.3.6 Switching the Test Mode and the Transmission Block On and OFF. ................................. 269
7.4 Checks With Secondary Values ......................................................................................... 270
7.4.1 General............................................................................................................................... 270
7.4.2 Trip Characteristic of the Busbar Protection....................................................................... 271
7.4.2.1 busbar-selective Protection ................................................................................................ 271
7.4.2.2 Check Zone ........................................................................................................................ 273
7.4.3 Differential Current Monitoring............................................................................................275
7.4.3.1 busbar-selective Protection ................................................................................................ 275
7.4.3.2 Check Zone ........................................................................................................................ 276
7.4.3.3 Time Delay ......................................................................................................................... 276
7.4.4 Overcurrent Threshold Tripping.......................................................................................... 277
7.4.5 Breaker Failure Protection.................................................................................................. 277
7.4.5.1 Trip Characteristic for Operating Mode “Unbalancing” ....................................................... 277
7.4.5.2 Delay Time at Operating Mode “Unbalancing” and “I>Query”............................................ 278
7.4.6 Finishing the Tests with Secondary Values........................................................................ 278
7.5 Checks With Primary Values .............................................................................................. 279
7.5.1 Transformer Polarity ........................................................................................................... 279
7.6 Final Check of the Protection ............................................................................................. 280
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