Overfrequency protection (PTOF, 81)....................................49
Rate-of-change frequency protection (PFRC, 81)..................50
Multipurpose protection...............................................................50
Overview................................................................................50
General current and voltage protection (PGPF).....................50
Secondary system supervision....................................................50
Overview................................................................................50
Current circuit supervision (RDIF)..........................................50
Fuse failure supervision (RFUF)............................................51
Control.........................................................................................51
Overview................................................................................51
Synchrocheck and energizing check (RSYN, 25)..................51
Logic............................................................................................51
Overview................................................................................51
Tripping logic (PTRC, 94).......................................................51
Trip matrix logic (GGIO, 94)...................................................51
LogicGate...............................................................................52
LogicSRMemory.....................................................................52
LogicTimerSet........................................................................52
Monitoring....................................................................................52
Overview................................................................................52
Activate setting group.......................................................................52
Language..........................................................................................52
Section 10 Diagnose IED status.......................................................53
Find cause of internal failure............................................................53
Read internal events....................................................................53
Find available functions...............................................................53
Section 11 Test the IED...................................................................55
Overview...........................................................................................55
IED test mode...................................................................................56
View binary input values...................................................................56
Overview......................................................................................56
Binary Input Module (BIM)......................................................56
Signal matrix for binary input (SMBI)......................................57
View binary output values.................................................................57
Overview......................................................................................57
Binary Output Module (BOM).................................................57
Signal matrix for binary outputs (SMBO)................................57
Function test modes.........................................................................57
Differential protection...................................................................57
Distance protection......................................................................57
Current protection........................................................................58
Table of contents
RET 670
Operator's manual
1MRK504049-UEN rev. D
5
