Thermal overload protection, one time constant, Celsius
LCPTTR(26)............................................................................... 129
Thermal overload protection, one time constant, Fahrenheit
LFPTTR(26)................................................................................131
Thermal overload protection, two time constants TRPTTR (49) 132
Time undercurrent PTUC.................................................................134
Time delayed 2-step undercurrent protection UC2PTUC (37)... 134
Undervoltage PTUV.........................................................................137
Two step undervoltage protection UV2PTUV (27)..................... 137
Loss of voltage check LOVPTUV (27)........................................139
Underfrequency PTUF.....................................................................140
Underfrequency protection SAPTUF (81)...................................140
Volts per Hz PVPH.......................................................................... 141
Overexcitation protection OEXPVPH (24).................................. 141
Multipurpose analog protection GAPC............................................ 142
Accidental energizing protection for synchronous generator
AEGGAPC (50AE)......................................................................142
Out-of-step protection PPAM...........................................................143
Out-of-step protection OOSPPAM (78)...................................... 143
Ground fault protection PHIZ...........................................................145
100% Stator ground fault protection, 3rd harmonic based
STEFPHIZ (59THD)................................................................... 145
Voltage-restrained time overcurrent PVOC..................................... 147
Voltage-restrained time overcurrent protection VRPVOC (51V) 147
System logical nodes............................................................................149
Physical device information LPHD.................................................. 149
Product information PRODINF................................................... 149
Logical nodes for protection related functions...................................... 150
Breaker failure RBRF.......................................................................150
Breaker failure protection 3-phase activation and output
CCRBRF (50BF).........................................................................150
Breaker failure protection phase segregated activation and
output CSPRBRF (50BF)........................................................... 151
Differential supervision RDIF...........................................................151
Current circuit supervision CCSRDIF (87)..................................151
Disturbance recorder RDRE............................................................152
Disturbance report DRPRDRE................................................... 152
Fault locator RFLO.......................................................................... 153
Fault locator LMBRFLO..............................................................153
Fuse failure supervision RFUF........................................................ 154
Fuse failure supervision SDDRFUF........................................... 154
Table of contents
4 650 series ANSI
Communication protocol manual