Hitachi RED670 Commissioning Manual page 15

1MRK 505 378-UEN Rev. K
11.11.2.5
11.11.3 Current reversal and Weak-end infeed logic for distance protection 3-phase
ZCRWPSCH ...................................................................................................................221
11.11.3.1
11.11.3.2
11.11.3.3
11.11.3.4
11.11.4 Local acceleration logic ZCLCPSCH...............................................................................223
11.11.4.1
11.11.4.2
11.11.5 Scheme communication logic for residual overcurrent protection ECPSCH ..................223
11.11.5.1
11.11.5.2
11.11.5.3
11.11.6 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH .................................................................................................................. 225
11.11.6.1
11.11.6.2
11.11.6.3
11.11.7 Direct transfer trip logic................................................................................................... 227
11.11.7.1
11.11.7.2
11.11.7.3
11.11.7.4
11.11.7.5
11.11.7.6
11.11.7.7
11.11.7.8
11.11.7.9
11.11.7.10
11.12 Logic..................................................................................................................................233
11.12.1 Tripping logic, common 3-phase output SMPPTRC .......................................................233
11.12.1.1
11.12.1.2
11.12.1.3
11.12.1.4
11.12.1.5
11.12.1.6
11.13 Monitoring..........................................................................................................................236
11.13.1 Gas medium supervision SSIMG.................................................................................... 236
11.13.1.1
11.13.1.2
11.13.1.3
11.13.1.4
11.13.2 Liquid medium supervision SSIML.................................................................................. 237
Line differential protection RED670
Commissioning manual
Completing the test.................................................................................................... 221
Function revision history............................................................................................ 221
Current reversal logic................................................................................................. 222
Weak end infeed logic................................................................................................222
Completing the test.................................................................................................... 223
Verifying the settings.................................................................................................. 223
Completing the test.................................................................................................... 223
Function revision history............................................................................................ 224
Testing the directional comparison logic function.......................................................224
Completing the test.................................................................................................... 225
Testing the current reversal logic............................................................................... 225
Testing the weak-end infeed logic.............................................................................. 226
Completing the test.................................................................................................... 227
Low active power and power factor local criteria LAPPGAPC................................... 227
Compensated over- and undervoltage protection COUVGAPC................................ 228
Sudden change in current variation SCCVPTOC...................................................... 229
Carrier receive logic LCCRPTRC ..............................................................................229
Negative sequence overvoltage protection LCNSPTOV............................................231
Zero sequence overvoltage protection LCZSPTOV...................................................231
Negative sequence overcurrent protection LCNSPTOC............................................231
Zero sequence overcurrent protection LCZSPTOC................................................... 232
Three phase overcurrent LCP3PTOC........................................................................232
Three phase undercurrent LCP3PTUC......................................................................233
Function revision history............................................................................................ 233
3 phase operating mode............................................................................................ 233
1ph/3ph operating mode ........................................................................................... 234
1ph/2ph/3ph operating mode .................................................................................... 234
Circuit breaker lockout............................................................................................... 235
Completing the test.................................................................................................... 236
Function revision history............................................................................................ 236
Testing the gas medium supervision for pressure alarm and pressure lockout
conditions .................................................................................................................. 236
Testing the gas medium supervision for temperature alarm and temperature
lockout conditions ......................................................................................................237
Completing the test.................................................................................................... 237
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