P.16.35
Date Code 20151029 Protection Manual SEL-411L Relay
Relay Word Bits
Alphabetic
TSYNCA Assert while the time mark from time source or fixed internal source is not synchronized 414
TUPDH Assert if update source is high-accuracy time source 413
TUTC1 Offset hours from UTC time, binary, add 1 if asserted 321
TUTC2 Offset hours from UTC time, binary, add 2 if asserted 321
TUTC4 Offset hours from UTC time, binary, add 4 if asserted 321
TUTC8 Offset hours from UTC time, binary, add 8 if asserted 321
TUTCH Offset half-hour from UTC time, binary, add 0.5 if asserted 321
TUTCS Offset hours sign from UTC time, subtract the UTC offset if TUTCS is asserted, add otherwise 321
TWALTI TW Alternate current channel 406
TWFLIF Internal Fault Condition for TWFL (SEL
OGIC Eq.) 405
TWIW Select IW for TW 406
TWIX Select IX for TW 406
TWPOST TW State Machine in Post Trigger recording state 405
TWREC TW Data acquisition in record state 406
TWRTV TW Data acquisition in retrieve state 406
TWWAIT TW Data acquisition in wait state 406
UBB Block permissive trip received 1 or 2 59
UBB1 Blocks permissive trip Receiver 1 59
UBB2 Blocks permissive trip Receiver 2 59
UBOSB Unblock out-of-step blocking 20
ULCL1 Unlatch closing for Circuit Breaker 1 (SEL
OGIC control equation) 43
ULCL2 Unlatch closing for Circuit Breaker 2 (SEL
OGIC control equation) 43
ULMTR1 Circuit Breaker 1 unlatch manual trip 56
ULMTR2 Circuit Breaker 2 unlatch manual trip 56
ULTR Unlatch all protection trips 56
ULTRA Unlatch Trip A 57
ULTRB Unlatch Trip B 57
ULTRC Unlatch Trip C 57
UPD_BLK Block updating internal clock period and Master Time 413
UPD_EN Enable updating internal clock with selected external time source 412
VB001–VB008 Virtual Bit 001–008 295
VB009–VB016 Virtual Bit 009–016 294
VB017–VB024 Virtual Bit 017–024 293
VB025–VB032 Virtual Bit 025–032 292
VB033–VB040 Virtual Bit 033–040 291
VB041–VB048 Virtual Bit 041–048 290
VB049–VB056 Virtual Bit 049–056 289
VB057–VB064 Virtual Bit 057–064 288
VB065–VB072 Virtual Bit 065–072 287
VB073–VB080 Virtual Bit 073–080 286
VB081–VB088 Virtual Bit 081–088 285
Table 16.1 Alphabetical List of Relay Word Bits (Sheet 35 of 39)
Name Bit Description Row
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