ii
Factory-Set Logic
Date Code 990430
SEL-351P Manual Técnico
Other Operator Controls......................................................................................1-49
RELIGAMENTO HABILITADO Operator Control ..................................................1-49
REMOTO HABILITADO Operator Control..............................................................1-49
Example Application for the REMOTO HABILITADO Operator Control .......1-50
SEF HABILITADO Operator Control........................................................................1-50
PROTEÇÃO BLOQUEADA Operator Control .........................................................1-51
AJUSTES ALTERNATIVOS Operator Control ........................................................1-52
BLOQUEIO Operator Control ....................................................................................1-53
Front-Panel Status and Trip Target LEDs ..................................................................................1-54
Hot Line Tag.......................................................................................................................1-56
TABLES
Table 1.1: Correspondence Between EZ Settings and “Regular” Settings ..............................................1-2
Table 1.2: Overcurrent Element Functions with EZ Settings Operative ..................................................1-5
Table 1.3: Conditions for Assertion of Relay Word bits SH0 through SH4 ..........................................1-13
FIGURES
Figure 1.1: Loss of Load Diversity (top) and Restore Min. Trips (bottom) Logic for Cold Load
Pickup Scheme ...............................................................................................................1-8
Figure 1.2: Cold Load Pickup Scheme Seal-in Logic for Phase Overcurrent Elements ...........................1-9
Figure 1.3: Cold Load Pickup Scheme Seal-in Logic for Ground Overcurrent Elements ......................1-10
Figure 1.4: Cold Load Pickup Scheme Seal-in Logic for SEF Overcurrent Elements............................1-10
Figure 1.5: Disable Lower Portion of Delay Curve-Phase for Cold Load Pickup ..................................1-12
Figure 1.6: Operations-Phase Fast Curve Logic......................................................................................1-15
Figure 1.7: Operations-Ground Fast Curve Logic ...................................................................................1-16
Figure 1.8: Operations to Lockout - Phase Logic....................................................................................1-18
Figure 1.9: Operations to Lockout - Ground Logic .................................................................................1-19
Figure 1.10: Operations to Lockout - SEF Logic ....................................................................................1-20
Figure 1.11: Activate High Current Trip - Phase Logic ..........................................................................1-21
Figure 1.12: Activate High Current Trip - Ground Logic .......................................................................1-22
Figure 1.13: Activate High Current Lockout - Phase Logic....................................................................1-23
Figure 1.14: Activate High Current Lockout - Ground Logic .................................................................1-24
Figure 1.15: Fast Curve - Phase (top) and Fast Curve - Ground (bottom) Enable/Disable Logic ..........1-25
Figure 1.16: Delay Curve - Phase (top) and Delay Curve - Ground (bottom) Enable/Disable
Logic ............................................................................................................................1-26
Figure 1.17: High Current Trip (top) and High Current Lockout (bottom) Enable/Disable Logic.........1-27
Figure 1.18: SEF Element Enable/Disable Logic....................................................................................1-28
Figure 1.19: Trip Conditions ...................................................................................................................1-29
Figure 1.20: Close Conditions – Other Than Auto-Reclosing ................................................................1-30
Figure 1.21: Unlatch Close Conditions ...................................................................................................1-31
Figure 1.22: Recloser Status Determination............................................................................................1-32
Figure 1.23: Drive-to-Lockout Logic – Part 1 of 3..................................................................................1-34
Figure 1.24: Drive-to-Lockout Logic – Part 2 of 3..................................................................................1-35
Figure 1.25: Drive-to-Lockout Logic – Part 3 of 3..................................................................................1-36
Figure 1.26: Block Reset Timing Logic ..................................................................................................1-37
Содержание SEL-351P
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