Schweitzer Engineering SEL-351P, Быстрый старт

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Date Code 990215 Close and Reclose Logic i
SEL-351P Manual Técnico
TABLE OF CONTENTS
SECTION 6: CLOSE AND RECLOSE LOGIC ........................................6-1
Close Logic ...................................................................................................................................6-1
Set Close ...............................................................................................................................6-2
Unlatch Close........................................................................................................................6-3
Factory Settings Example .....................................................................................................6-3
Defeat the Close Logic..........................................................................................................6-3
Circuit Breaker Status...........................................................................................................6-3
Program an Output for Closing.............................................................................................6-4
Reclose Supervision Logic ...........................................................................................................6-4
Settings and General Operation ............................................................................................6-7
Reclose Supervision Limit Time = 0 (top of Figure 6.2)..............................................6-7
Reclose Supervision Limit Time > 0 (bottom of Figure 6.2 and Figure 6.3) ...............6-7
Set Reclose Supervision Logic (bottom of Figure 6.2).........................................6-8
Unlatch Reclose Supervision Logic (bottom of Figure 6.2) .................................6-8
Settings Example 1 ...............................................................................................................6-9
SEL-351P(1) Recloser Control .....................................................................................6-9
SEL-351P(2) Recloser Control .....................................................................................6-9
Other Setting Considerations for SEL-351P(1) and SEL-351P(2) Recloser
Controls ...............................................................................................................6-10
Settings Example 2 .............................................................................................................6-10
Reclosing Relay ..........................................................................................................................6-11
Reclosing Relay States and General Operation ..................................................................6-12
Lockout State ..............................................................................................................6-13
Reclosing Relay States and Settings/Setting Group Changes.............................................6-13
Defeat the Reclosing Relay.................................................................................................6-14
Close Logic Can Still Operate When the Reclosing Relay is Defeated .....................6-14
Reclosing Relay Timer Settings..........................................................................................6-15
Open Interval Timers ..................................................................................................6-15
Determination of Number of Reclosures (Last Shot) .................................................6-16
Observe Shot Counter Operation ................................................................................6-16
Reset Timer .................................................................................................................6-17
Monitoring Open Interval and Reset Timing..............................................................6-17
Reclosing Relay Shot Counter ............................................................................................6-18
Reclosing Relay SEL
OGIC
Control Equation Settings Overview.......................................6-18
Reclose Initiate and Reclose Initiate Supervision Settings (79RI and 79RIS,
respectively) ................................................................................................................6-19
Factory Settings Example ...........................................................................................6-19
Additional Settings Example ......................................................................................6-20
Other Settings Considerations.....................................................................................6-20
Drive-to-Lockout and Drive-to-Last Shot Settings (79DTL and 79DLS,
respectively) ................................................................................................................6-21
Factory Settings Example ...........................................................................................6-21
Other Settings Considerations.....................................................................................6-22
Skip Shot and Stall Open Interval Timing Settings (79SKP and 79STL,
respectively) ................................................................................................................6-22