Schweitzer Engineering SEL-351P - Section 1: Factory-Set Logic

Date Code 990430 Factory-Set Logic i
SEL-351P Manual Técnico
TABLE OF CONTENTS
SECTION 1: FACTORY-SET LOGIC ......................................................1-1
Introduction...................................................................................................................................1-1
Factory Default Settings .......................................................................................................
1-1
Installation Variations and Logic Changes...........................................................................
1-1
EZ Settings vs. “Regular” Settings .......................................................................................
1-1
Overcurrent Element Functions Overview ...........................................................................
1-5
Residual Ground vs. Neutral Ground....................................................................................
1-6
Cold Load Pickup Scheme............................................................................................................
1-7
Enable Cold Load Pickup Scheme........................................................................................
1-7
Start Loss of Load Diversity Timer ......................................................................................
1-8
Actively Engage Cold Load Pickup Scheme (Phase Elements Example)............................
1-9
Use Overcurrent Element Torque Control Logic to Enable/Disable or Desensitize
Elements (Phase Elements Example)..........................................................................
1-11
Desensitize Delay Curve – Maintain Coordination (Phase Elements Example)................
1-11
Disengage Cold Load Pickup Scheme (Phase Elements Example)....................................
1-12
Other Cold Load Pickup Scheme Details Involving Ground and SEF Elements ...............
1-12
Fast Curve Operation Logic........................................................................................................
1-13
Fast Curve Operation When Reclosing Is Defeated ...........................................................
1-14
Operations to Lockout, Activate High Current Trip, and Activate High Current Lockout
Logic ...................................................................................................................................
1-17
High Current Trip Operation When Reclosing Is Defeated ...............................................
1-17
Overcurrent Element Enable/Disable Logic...............................................................................
1-24
Trip Logic ...................................................................................................................................
1-28
Close Logic.................................................................................................................................
1-29
Close Conditions – Other Than Auto-Reclosing ................................................................
1-29
Unlatch Close Conditions ...................................................................................................
1-30
Recloser Status....................................................................................................................
1-31
Drive-to-Lockout Logic ..............................................................................................................
1-32
Operations to Lockout.........................................................................................................
1-32
High-Current Lockout.........................................................................................................
1-33
Other Drive-to-Lockout Conditions....................................................................................
1-34
Block Reset Timing ....................................................................................................................
1-36
Sequence Coordination...............................................................................................................
1-37
Reclose Supervision Logic .........................................................................................................
1-40
Trip and Close Capacitors Charged....................................................................................
1-41
Healthy Battery...................................................................................................................
1-41
Operator Control Logic...............................................................................................................
1-41
Detailed Operator Control Pushbutton Output ...................................................................
1-43
TERRA HABILITADO Operator Control Pushbutton Output...........................
1-43
Other operator control pushbutton outputs operate similarly to TERRA
HABILITADO.............................................................................................
1-44
BLOQUEIO Operator Control Pushbutton Output.....................................................
1-44
ABRIR and FECHAR Operator Control Pushbutton Outputs....................................
1-45
Corresponding Operator Control LEDs and Logic Applications .......................................
1-47
TERRA HABILITADO Operator Control..................................................................
1-48