Toshiba GR-200 Series Instruction Manual page 10

Operation for the CTF function ........................................................................................ 229
2.21.2
Scheme logic ...................................................................................................................... 229
2.21.3
Setting ................................................................................................................................ 231
2.21.4
Signal ................................................................................................................................. 232
2.21.5
Three-phase autoreclose (ARC) ................................................................................................ 233
Outline ............................................................................................................................... 234
2.22.1
Terminology ....................................................................................................................... 235
2.22.2
Function block diagram ..................................................................................................... 238
2.22.3
Autoreclosing logic ............................................................................................................. 239
2.22.4
Timing diagrams ............................................................................................................... 245
2.22.5
Shot number coordination ................................................................................................. 248
2.22.6
Miscellaneous feature ........................................................................................................ 252
2.22.7
Application guidelines ....................................................................................................... 253
2.22.8
Setting ................................................................................................................................ 258
2.22.9
Signal .............................................................................................................................. 259
2.22.10
Three-phase trip circuit (TRC) ................................................................................................. 261
Command for tripping CB and signal to block reclosing CB ........................................... 263
2.23.1
Recording identifiers for respective fault types ............................................................... 264
2.23.2
Scheme logic ...................................................................................................................... 265
2.23.3
Setting ................................................................................................................................ 268
2.23.4
Signal ................................................................................................................................. 269
2.23.5
Protection common (PROT_COMMON) .................................................................................. 271
Decision of CB open/close status ....................................................................................... 272
2.24.1
Decision of DS open/close status ....................................................................................... 274
2.24.2
Dead line detection ............................................................................................................ 275
2.24.3
Detection of current change (OCD) ................................................................................... 276
2.24.4
User logic switches ............................................................................................................ 277
2.24.5
Setting ................................................................................................................................ 278
2.24.6
Signal ................................................................................................................................. 279
2.24.7
Voltage check for autoreclose (VCHK) ..................................................................................... 281
Voltage condition and check zone ..................................................................................... 282
2.25.1
Synchronism check scheme ............................................................................................... 283
2.25.2
VCHK setting .................................................................................................................... 287
2.25.3
Check logic for the voltage and the synchronism ............................................................. 291
2.25.4
Setting ................................................................................................................................ 292
2.25.5
Signal ................................................................................................................................. 293
2.25.6
Single-end fault locator (FL) .................................................................................................... 294
Computation method ......................................................................................................... 295
2.26.1
Output of FL computation on display ............................................................................... 298
2.26.2
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6F2T0200 (0.15)