Hitachi RED670 - Page 17

11.17.1 Parameter setting group handling SETGRPS.................................................................252
11.17.1.1 Verifying the settings.................................................................................................. 252
11.17.1.2 Completing the test.................................................................................................... 252
11.18 Exit test mode....................................................................................................................253
Section 12 Checking the directionality.......................................................................255
12.1 Overview........................................................................................................................... 255
12.2 Testing the directionality of the distance protection...........................................................255
Section 13 Commissioning and maintenance of the fault clearing system............257
13.1 Commissioning tests......................................................................................................... 257
13.2 Periodic maintenance tests............................................................................................... 257
13.2.1 Visual inspection............................................................................................................. 258
13.2.2 Maintenance tests........................................................................................................... 258
13.2.2.1 Preparation.................................................................................................................258
13.2.2.2 Recording...................................................................................................................258
13.2.2.3 Secondary injection....................................................................................................258
13.2.2.4 Alarm test...................................................................................................................258
13.2.2.5 Self supervision check............................................................................................... 259
13.2.2.6 Trip circuit check........................................................................................................ 259
13.2.2.7 Measurement of service currents...............................................................................259
13.2.2.8 Restoring....................................................................................................................260
Section 14 Troubleshooting.........................................................................................261
14.1 Checking the self supervision signals............................................................................... 261
14.1.1 Checking the self supervision function............................................................................261
14.1.1.1 Determine the cause of an internal failure................................................................. 261
14.1.2 Self supervision HMI data............................................................................................... 261
14.1.2.1 General IED status.....................................................................................................261
14.2 Fault tracing.......................................................................................................................262
14.2.1 Internal fault indications...................................................................................................262
14.2.2 Using front-connected PC............................................................................................... 263
14.2.3 Diagnosing the IED status via the LHMI hint menu.........................................................264
14.2.4 Hardware re-configuration...............................................................................................267
14.3 Repair instruction.............................................................................................................. 268
14.4 Repair support...................................................................................................................269
14.5 Maintenance......................................................................................................................269
Section 15 Glossary..................................................................................................... 271
1MRK 505 378-UEN Rev. K Table of contents
Line differential protection RED670 11
Commissioning manual
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