Directional residual power protection measuring 3I0 · 3V0 · cos φ240Directional residual current protection measuring 3I0 and φ...... 241Directional functions................................................................... 242Non-directional ground fault current protection.......................... 242Residual overvoltage release and protection............................. 242Technical data................................................................................. 244Time delayed 2-step undercurrent protection UC2PTUC (37)..............245Identification.................................................................................... 245Functionality.................................................................................... 245Function block................................................................................. 246Signals.............................................................................................246Settings............................................................................................247Operation principle.......................................................................... 247Technical data................................................................................. 248Thermal overload protection, one time constant Fahrenheit/CelsiusLFPTTR/LCPTTR (26)..........................................................................248Identification ................................................................................... 248Functionality.................................................................................... 249Function block................................................................................. 249Signals.............................................................................................250Settings............................................................................................251Monitored data.................................................................................252Operation principle.......................................................................... 253Technical data................................................................................. 256Breaker failure protection 3-phase activation and output CCRBRF (50BF).................................................................................................... 256Identification.................................................................................... 256Functionality.................................................................................... 256Function block................................................................................. 257Signals.............................................................................................257Settings............................................................................................258Monitored data.................................................................................259Operation principle.......................................................................... 259Technical data................................................................................. 261Breaker failure protection phase segregated activation and outputCSPRBRF (50BF).................................................................................262Identification.................................................................................... 262FunctionalityBreaker failure protection, phase segregatedactivation and output....................................................................... 262Function block................................................................................. 263Table of contents7Technical manual
