Operation principle.......................................................................... 220
Operating quantity within the function........................................ 220
Internal polarizing facility of the function.....................................221
External polarizing for negative sequence function....................222
Internal negative sequence protection structure.........................222
Four negative sequence overcurrent stages.............................. 222
Directional supervision element with integrated directional
comparison function................................................................... 224
Technical data................................................................................. 226
Sensitive directional residual overcurrent and power protection
SDEPSDE (67N)...................................................................................227
Identification.................................................................................... 227
Functionality.................................................................................... 227
Function block................................................................................. 229
Signals.............................................................................................229
Settings............................................................................................230
Monitored data.................................................................................232
Operation principle.......................................................................... 232
Function inputs........................................................................... 232
Technical data................................................................................. 240
Thermal overload protection, one time constant Fahrenheit/Celsius
LFPTTR/LCPTTR (26)..........................................................................241
Identification.................................................................................... 241
Functionality.................................................................................... 241
Function block................................................................................. 242
Signals.............................................................................................242
Settings............................................................................................243
Monitored data.................................................................................245
Operation principle.......................................................................... 245
Technical data................................................................................. 249
Directional underpower protection GUPPDUP (37)..............................249
Identification.................................................................................... 249
Functionality.................................................................................... 249
Function block................................................................................. 251
Signals.............................................................................................251
Settings............................................................................................252
Monitored data.................................................................................253
Operation principle.......................................................................... 253
Table of contents
Phasor measurement unit RES670 2.1 ANSI
5
Technical manual
Summary of Contents for Relion 670 Series RES670
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