Hitachi RET670 Commissioning Manual page 18

Table of contents
14.2.2.3
14.2.2.4
14.2.2.5
14.2.2.6
14.2.2.7
14.2.2.8
Section 15 Troubleshooting.........................................................................................291
15.1 Checking the self supervision signals............................................................................... 291
15.1.1 Checking the self supervision function............................................................................ 291
15.1.1.1
15.1.2 Self supervision HMI data............................................................................................... 291
15.1.2.1
15.2 Fault tracing.......................................................................................................................292
15.2.1 Internal fault indications...................................................................................................292
15.2.2 Using front-connected PC............................................................................................... 293
15.2.3 Diagnosing the IED status via the LHMI hint menu.........................................................294
15.2.4 Hardware re-configuration...............................................................................................297
15.3 Repair instruction.............................................................................................................. 298
15.4 Repair support...................................................................................................................299
15.5 Maintenance......................................................................................................................299
Section 16 Glossary..................................................................................................... 301
12
Secondary injection....................................................................................................288
Alarm test................................................................................................................... 288
Self supervision check............................................................................................... 289
Trip circuit check........................................................................................................ 289
Measurement of service currents...............................................................................289
Restoring....................................................................................................................290
Determine the cause of an internal failure................................................................. 291
General IED status.....................................................................................................291
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1MRK 504 165-UEN Rev. K
Transformer protection RET670
Commissioning manual