Toshiba GR200 Series Instruction Manual page 9

Miscellaneous functions .................................................................................................... 251
2.16.5
Scheme logic ...................................................................................................................... 252
2.16.6
Setting ................................................................................................................................ 254
2.16.7
Data ID .............................................................................................................................. 259
2.16.8
Negative sequence overcurrent protection (OCN) ................................................................... 261
Relay polarity .................................................................................................................... 262
2.17.1
Inverse time and definite time delay characteristic ........................................................ 264
2.17.2
Threshold value ................................................................................................................. 269
2.17.3
Reset Ratio ......................................................................................................................... 269
2.17.4
Miscellaneous functions .................................................................................................... 269
2.17.5
Scheme logic ...................................................................................................................... 270
2.17.6
Setting ................................................................................................................................ 272
2.17.7
Data ID .............................................................................................................................. 277
2.17.8
Thermal overload function (THM) ........................................................................................... 279
Thermal state determination ............................................................................................ 280
2.18.1
Thermal characteristic ...................................................................................................... 281
2.18.2
Scheme logic ...................................................................................................................... 282
2.18.3
Setting ................................................................................................................................ 283
2.18.4
Data ID .............................................................................................................................. 284
2.18.5
Broken conductor protection (BCD) ......................................................................................... 285
Equivalent circuit for a one-phase series fault ................................................................ 286
2.19.1
Characteristic and setting ................................................................................................. 288
2.19.2
Miscellaneous functions .................................................................................................... 288
2.19.3
Scheme logic ...................................................................................................................... 289
2.19.4
Setting ................................................................................................................................ 289
2.19.5
Data ID .............................................................................................................................. 290
2.19.6
Circuit breaker fail protection (CBF) ....................................................................................... 291
CBF operation and its elements ....................................................................................... 292
2.20.1
Re-trip feature ................................................................................................................... 292
2.20.2
Backup feature .................................................................................................................. 293
2.20.3
Scheme logic ...................................................................................................................... 295
2.20.4
Operation timing ............................................................................................................... 297
2.20.5
Setting ................................................................................................................................ 298
2.20.6
Data ID .............................................................................................................................. 299
2.20.7
Overvoltage protection for phase-to-neutral (OV) ................................................................... 301
Drop-off and pickup characteristic ................................................................................... 302
2.21.1
Delay for the operation of the OV element ....................................................................... 302
2.21.2
Time characteristic ............................................................................................................ 302
2.21.3
Miscellaneous functions .................................................................................................... 305
2.21.4
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6F2S1914 (0.49)