Logic diagram............................................................................. 279Undervoltage protection............................................................. 279Technical data................................................................................. 280Section 9 Voltage protection............................................................. 281Two step undervoltage protection UV2PTUV (27)................................281Identification.................................................................................... 281Functionality.................................................................................... 281Function block................................................................................. 281Signals.............................................................................................282Settings............................................................................................282Monitored data.................................................................................283Operation principle.......................................................................... 283Measurement principle............................................................... 284Time delay.................................................................................. 284Blocking...................................................................................... 285Design........................................................................................ 286Technical data................................................................................. 287Two step overvoltage protection OV2PTOV (59)................................. 287Identification.................................................................................... 287Functionality.................................................................................... 287Function block................................................................................. 288Signals.............................................................................................288Settings............................................................................................289Monitored data.................................................................................290Operation principle.......................................................................... 290Measurement principle............................................................... 291Time delay.................................................................................. 291Blocking...................................................................................... 292Design........................................................................................ 292Technical data................................................................................. 294Two step residual overvoltage protection ROV2PTOV (59N)...............294Identification.................................................................................... 294Functionality.................................................................................... 294Function block................................................................................. 295Signals.............................................................................................295Settings............................................................................................296Monitored data.................................................................................296Operation principle.......................................................................... 296Measurement principle............................................................... 297Table of contents9Technical manual
