ABB REM630 - Page 8

Protection functions.....................................................................29
Thermal overload protection MPTTR.....................................29
Emergency start ESMGAPC..................................................30
Motor startup supervision STTPMSU.....................................30
Motor stall protection JAMPTOC............................................30
Loss of load protection LOFLPTUC.......................................31
Phase reversal protection PREVPTOC..................................32
Motor negative-sequence overcurrent protection
MNSPTOC.............................................................................32
Non-directional overcurrent protection PHxPTOC.................33
Non-directional earth-fault protection EFxPTOC....................34
Positive-sequence overvoltage protection PSPTOV..............34
Positive-sequence undervoltage protection PSPTUV............34
Negative-sequence overvoltage protection NSPTOV............34
Circuit-breaker failure protection CCBRBRF..........................35
Tripping logic TRPPTRC........................................................36
Combined operate and start alarm signal..............................36
Combined restart inhibit and restart enable signal.................37
Supervision functions..................................................................37
Trip circuit supervision TCSSCBR.........................................37
Fuse failure and current circuit supervision SEQRFUF,
CCRDIF..................................................................................37
Circuit-breaker condition monitoring SSCBR.........................37
Measurement and analog recording functions............................38
Binary recording and LED configuration......................................40
Section 4 Requirements for measurement transformers................43
Current transformers........................................................................43
Current transformer requirements for non-directional
overcurrent protection..................................................................43
Current transformer accuracy class and accuracy limit
factor......................................................................................43
Non-directional overcurrent protection...................................44
Example for non-directional overcurrent protection................45
Section 5 Glossary.........................................................................47
Table of contents
2 REM630
Application Manual