ABB Relion 670 Series Commissioning Manual page 14

Table of contents
11.9.6.1 Verifying the signals and settings...................................................................................... 210
11.9.6.2 Completing the test............................................................................................................... 211
11.10 Control.............................................................................................................................................. 211
11.10.1 Synchrocheck, energizing check, and synchronizing SESRSYN........................................ 211
11.10.1.1 Testing the synchronizing function.................................................................................... 212
11.10.1.2 Testing the synchrocheck functionality.............................................................................213
11.10.1.3 Testing the energizing check............................................................................................... 215
11.10.1.4 Testing the voltage selection...............................................................................................216
11.10.1.5 Completing the test...............................................................................................................218
11.10.2 Apparatus control APC............................................................................................................. 218
11.10.3 Voltage control TR1ATCC, TR8ATCC, TCMYLTC, TCLYLTC................................................218
11.10.3.1 Secondary test........................................................................................................................220
11.10.3.2 Check the activation of the voltage control operation.................................................. 220
11.10.3.3 Check the normal voltage regulation function................................................................. 221
11.10.3.4 Check the undervoltage block function............................................................................. 221
11.10.3.5 Check the upper and lower busbar voltage limit............................................................. 222
11.10.3.6 Check the overcurrent block function................................................................................222
11.10.3.7 Single transformer................................................................................................................. 222
11.10.3.8 Parallel voltage regulation....................................................................................................223
11.10.3.9 Completing the test...............................................................................................................227
11.10.4 Single command, 16 signals SINGLECMD............................................................................. 227
11.10.5 Interlocking................................................................................................................................. 227
11.11 Scheme communication............................................................................................................... 227
11.11.1 Scheme communication logic for distance or overcurrent protection ZCPSCH ......... 227
11.11.1.1 Testing permissive underreaching..................................................................................... 227
11.11.1.2 Testing permissive overreaching........................................................................................228
11.11.1.3 Testing blocking scheme......................................................................................................228
11.11.1.4 Testing delta blocking scheme........................................................................................... 228
11.11.1.5 Checking of unblocking logic...............................................................................................229
11.11.1.6 Completing the test...............................................................................................................229
11.11.2 Phase segregated scheme communication logic for distance or overcurrent
protection ZC1PPSCH .............................................................................................................. 229
11.11.2.1 Testing permissive underreaching..................................................................................... 229
11.11.2.2 Testing permissive overreaching....................................................................................... 230
11.11.2.3 Testing blocking scheme......................................................................................................230
11.11.2.4 Completing the test.............................................................................................................. 230
11.11.3 Current reversal and Weak-end infeed logic for distance protection 3-phase
ZCRWPSCH ................................................................................................................................. 231
11.11.3.1 Current reversal logic.............................................................................................................231
11.11.3.2 Weak end infeed logic............................................................................................................231
11.11.3.3 Completing the test...............................................................................................................232
11.11.4 Scheme communication logic for residual overcurrent protection ECPSCH ............... 232
11.11.4.1 Testing the directional comparison logic function......................................................... 233
11.11.4.2 Completing the test.............................................................................................................. 234
11.11.5 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH .................................................................................................................................234
11.11.5.1 Testing the current reversal logic.......................................................................................234
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Transformer protection RET670
Commissioning manual