ABB Relion Technical Manual page 15

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