Draft61850-7-4©1EC:2002 -3- 57WG10-12(61850-7-4)R3.0/FD1S 5.4.21 LN:Protection trip conditioning Name:PTRC 34 5.4.22 LN:Thermal overload Name:PTTR 35 5.4.23 LN:Undercurrent Name:PTUC 35 5.4.24 LN:Undervoltage Name:PTUV 36 5.4.25 LN:Under power factor Name:PUPF 36 5.4.26 LN:Under frequency Name:PTUF 37 5.4.27 LN:Voltage controlled time overcurrent Name:PVOC 37 5.4.28 LN:Volts per Hz Name:PVPH 38 5.4.29 LN:Zero speed or underspeed Name:PZSU 38 5.5 Logical Nodes for protection related functions LN Group:R 40 5.5.1 Modelling Remarks 40 5.5.2 LN:Disturbance recorder function Name:RDRE 40 5.5.3 LN:Disturbance recorder channel analogue Name:RADR 41 5.5.4 LN:Disturbance recorder channel binary Name:RBDR 41 5.5.5 LN:Disturbance record handling Name:RDRS 42 5.5.6 LN:Breaker failure Name:RBRF 42 5.5.7 LN:Directional element Name:RDIR 43 5.5.8 LN:Fault locator Name:RFLO 43 5.5.9 LN:Power swing detection/blocking Name:RPSB 44 5.5.10 LN:Autoreclosing Name:RREC 45 5.5.11 LN:Synchronism-check or synchronising Name:RSYN 45 5.6 Logical Nodes for control LN Group:C 47 5.6.1 Modelling Remarks 47 5.6.2 LN:Alarm handling Name:CALH 47 5.6.3 LN:Cooling Group Control Name:CCGR 47 5.6.4 LN:Interlocking Name:CILO 48 5.6.5 LN:Point-on-wave switching Name:CPOW 49 5.6.6 LN:Switch controller Name:CSWI 49 5.7 Logical nodes for generic references LN Group:G 50 5.7.1 LN:Generic automatic process control Name:GAPC 50 5.7.2 LN:Generic process I/O Name:GGIO 50 5.7.3 LN:Generic security application Name:GSAL 51 5.8 Logical Nodes for interfacing and archiving LN Group:I 52 5.8.1 LN:Archiving Name:IARC 52 5.8.2 LN:Human machine interface Name:IHMI 52 5.8.3 LN:Telecontrol interface Name:ITCI 52 5.8.4 LN:Telemonitoring interface Name:ITMI 53 5.9 Logical Nodes for automatic control LN Group:A 54 5.9.1 Modelling Remarks 54 5.9.2 LN:Neutral current regulator Name:ANCR 54 Version 3.0:22.August 2002Draft 61850-7-4  IEC: 2002 – 3 – 57/WG10-12(61850-7-4)R3.0/FDIS Version 3.0: 22. August 2002 5.4.21 LN: Protection trip conditioning Name: PTRC 34 5.4.22 LN: Thermal overload Name: PTTR 35 5.4.23 LN: Undercurrent Name: PTUC 35 5.4.24 LN: Undervoltage Name: PTUV 36 5.4.25 LN: Under power factor Name: PUPF 36 5.4.26 LN: Under frequency Name: PTUF 37 5.4.27 LN: Voltage controlled time overcurrent Name: PVOC 37 5.4.28 LN: Volts per Hz Name: PVPH 38 5.4.29 LN: Zero speed or underspeed Name: PZSU 38 5.5 Logical Nodes for protection related functions LN Group: R 40 5.5.1 Modelling Remarks 40 5.5.2 LN: Disturbance recorder function Name: RDRE 40 5.5.3 LN: Disturbance recorder channel analogue Name: RADR 41 5.5.4 LN: Disturbance recorder channel binary Name: RBDR 41 5.5.5 LN: Disturbance record handling Name: RDRS 42 5.5.6 LN: Breaker failure Name: RBRF 42 5.5.7 LN: Directional element Name: RDIR 43 5.5.8 LN: Fault locator Name: RFLO 43 5.5.9 LN: Power swing detection/blocking Name: RPSB 44 5.5.10 LN: Autoreclosing Name: RREC 45 5.5.11 LN: Synchronism-check or synchronising Name: RSYN 45 5.6 Logical Nodes for control LN Group: C 47 5.6.1 Modelling Remarks 47 5.6.2 LN: Alarm handling Name: CALH 47 5.6.3 LN: Cooling Group Control Name: CCGR 47 5.6.4 LN: Interlocking Name: CILO 48 5.6.5 LN: Point-on-wave switching Name: CPOW 49 5.6.6 LN: Switch controller Name: CSWI 49 5.7 Logical nodes for generic references LN Group: G 50 5.7.1 LN: Generic automatic process control Name: GAPC 50 5.7.2 LN: Generic process I/O Name: GGIO 50 5.7.3 LN: Generic security application Name: GSAL 51 5.8 Logical Nodes for interfacing and archiving LN Group: I 52 5.8.1 LN: Archiving Name: IARC 52 5.8.2 LN: Human machine interface Name: IHMI 52 5.8.3 LN: Telecontrol interface Name: ITCI 52 5.8.4 LN: Telemonitoring interface Name: ITMI 53 5.9 Logical Nodes for automatic control LN Group: A 54 5.9.1 Modelling Remarks 54 5.9.2 LN: Neutral current regulator Name: ANCR 54