Toshiba GR200 Series Instruction Manual page 11

Line differential protection ied
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Operation characteristic .................................................................................................... 351
2.27.1
Scheme logic and settings ................................................................................................. 353
2.27.2
Setting ................................................................................................................................ 354
2.27.3
Data ID .............................................................................................................................. 355
2.27.4
Inrush current detection function (ICD) .................................................................................. 356
Operation and characteristic ............................................................................................ 357
2.28.1
Scheme logic ...................................................................................................................... 357
2.28.2
Setting ................................................................................................................................ 358
2.28.3
Data ID .............................................................................................................................. 358
2.28.4
Fail safe (FS) ............................................................................................................................. 359
Overcurrent element (OCFS) ............................................................................................ 360
2.29.1
Phase current change detector element (OCDFS) ........................................................... 360
2.29.2
Earth fault current element (EFFS) ................................................................................. 360
2.29.3
Multi-level overcurrent elements (OCMFS) ..................................................................... 361
2.29.4
Under-voltage element for phase-to-earth (UVFS) .......................................................... 362
2.29.5
Under-voltage element for phase-to-phase (UVSFS) ....................................................... 362
2.29.6
Under-voltage change detection element (DUVFS) ......................................................... 362
2.29.7
Scheme logic ...................................................................................................................... 363
2.29.8
Setting ................................................................................................................................ 365
2.29.9
Data ID list ..................................................................................................................... 366
2.29.10
VT failure detection (VTF) ....................................................................................................... 367
VTF features ...................................................................................................................... 368
2.30.1
Operation for the VTF function ........................................................................................ 368
2.30.2
VTF Logic ........................................................................................................................... 369
2.30.3
Setting ................................................................................................................................ 371
2.30.4
Data ID .............................................................................................................................. 372
2.30.5
CT failure detection (CTF) ....................................................................................................... 373
CTF features ...................................................................................................................... 374
2.31.1
Operation for the CTF function ........................................................................................ 374
2.31.2
Scheme logic ...................................................................................................................... 374
2.31.3
Setting ................................................................................................................................ 376
2.31.4
Data ID .............................................................................................................................. 377
2.31.5
Multi-end fault locator (FL-A and FL-Z) ................................................................................. 378
FL calculation with data at a local-terminal and remote-terminals ............................... 379
2.32.1
FL calculation with data at a local-terminal only ............................................................ 386
2.32.2
Selection of calculation results ......................................................................................... 392
2.32.3
Screen of FL output ........................................................................................................... 393
2.32.4
Preparation and consideration of setting ......................................................................... 396
2.32.5
Setting procedure .............................................................................................................. 398
2.32.6
xi
6F2S1914 (0.49)

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