Hitachi RED670 Commissioning Manual page 13

1MRK 505 378-UEN Rev. K
11.6.3.1
11.6.3.2
11.6.3.3
11.6.4 Overexcitation protection OEXPVPH ............................................................................. 185
11.6.4.1
11.6.4.2
11.6.5 Voltage differential protection VDCPTOV .......................................................................185
11.6.5.1
11.6.5.2
11.6.5.3
11.6.5.4
11.6.5.5
11.6.5.6
11.6.6 Loss of voltage check LOVPTUV ................................................................................... 190
11.6.6.1
11.6.6.2
11.6.7 Radial feeder protection PAPGAPC................................................................................ 191
11.6.7.1
11.6.7.2
11.7 Frequency protection.........................................................................................................192
11.7.1 Underfrequency protection SAPTUF ..............................................................................192
11.7.1.1
11.7.1.2
11.7.2 Overfrequency protection SAPTOF ................................................................................193
11.7.2.1
11.7.2.2
11.7.3 Rate-of-change frequency protection SAPFRC ............................................................. 194
11.7.3.1
11.7.3.2
11.8 Multipurpose protection..................................................................................................... 194
11.8.1 Function revision history..................................................................................................194
11.8.2 General current and voltage protection CVGAPC...........................................................195
11.8.2.1
11.8.2.2
11.8.2.3
11.8.2.4
11.8.2.5
11.8.2.6
11.9 Secondary system supervision..........................................................................................197
11.9.1 Current circuit supervision CCSSPVC ........................................................................... 197
11.9.1.1
11.9.1.2
11.9.2 Fuse failure supervision FUFSPVC.................................................................................197
11.9.2.1
11.9.2.2
11.9.2.3
Line differential protection RED670
Commissioning manual
Function revision history............................................................................................ 184
Verifying the settings.................................................................................................. 184
Completing the test.................................................................................................... 185
Verifying the settings.................................................................................................. 185
Completing the test.................................................................................................... 185
Function revision history............................................................................................ 186
Check of undervoltage levels..................................................................................... 186
Check of voltage differential trip and alarm levels......................................................188
Check of trip and trip reset timers.............................................................................. 189
Final adjustment of compensation for VT ratio differences ....................................... 190
Completing the test.................................................................................................... 190
Measuring the operate limit of set values...................................................................190
Completing the test.................................................................................................... 191
Verifying the settings.................................................................................................. 191
Completing the test.................................................................................................... 192
Verifying the settings.................................................................................................. 192
Completing the test.................................................................................................... 193
Verifying the settings.................................................................................................. 193
Completing the test.................................................................................................... 194
Verifying the settings.................................................................................................. 194
Completing the test.................................................................................................... 194
Built-in overcurrent feature (non-directional)..............................................................195
Overcurrent feature with current restraint.................................................................. 196
Overcurrent feature with voltage restraint.................................................................. 196
Overcurrent feature with directionality........................................................................196
Over/Undervoltage feature.........................................................................................197
Completing the test.................................................................................................... 197
Verifying the settings.................................................................................................. 197
Completing the test.................................................................................................... 197
Checking that the binary inputs and outputs operate as expected ........................... 198
Measuring the operate value for the negative sequence function .............................198
Measuring the operate value for the zero-sequence function ................................... 199
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