Schweitzer Engineering SEL-351P, Quick Start Manual

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ii Trip and Target Logic Date Code 990215
SEL-351P Manual Técnico
Use Existing SEL-321 Relay DCUB Application Guide for the SEL-351P Recloser
Control ........................................................................................................................5-19
External Inputs ....................................................................................................................5-19
PT1, PT2 – Received Permissive Trip Signal(s).........................................................5-19
LOG1, LOG2 – Loss-of-Guard Signal(s) ...................................................................5-19
Timer Settings.....................................................................................................................5-20
GARD1D – Guard-Present Delay...............................................................................5-20
UBDURD – DCUB Disable Delay .............................................................................5-20
UBEND – DCUB Duration Delay ..............................................................................5-20
Logic Outputs......................................................................................................................5-20
UBB1, UBB2 – Unblocking Block Output(s).............................................................5-20
PTRX1, PTRX2 – Permissive Trip Receive Outputs .................................................5-23
Installation Variations.........................................................................................................5-23
Directional Comparison Blocking (DCB) Logic ........................................................................5-24
Use Existing SEL-321 Relay DCB Application Guide for the SEL-351P Recloser
Control ........................................................................................................................5-24
External Inputs ....................................................................................................................5-25
BT – Received Block Trip Signal(s)...........................................................................5-25
Timer Settings.....................................................................................................................5-25
Z3XPU – Zone (Level) 3 Reverse Pickup Time Delay ..............................................5-25
Z3XD – Zone (Level) 3 Reverse Dropout Extension .................................................5-25
BTXD – Block Trip Receive Extension .....................................................................5-25
67P2SD, 67N2SD, 67G2SD, 67Q2SD – Level 2 Short Delay ...................................5-25
Logic Outputs......................................................................................................................5-26
DSTRT – Directional Carrier Start .............................................................................5-26
NSTRT – Nondirectional Carrier Start .......................................................................5-26
STOP – Stop Carrier ...................................................................................................5-26
BTX – Block Trip Extension ......................................................................................5-27
Installation Variations.........................................................................................................5-27
Additional Front-Panel Status and Target LED Information .....................................................5-29
A, B, and C Target LEDs....................................................................................................5-29
Target Reset/Lamp Test Front-Panel Pushbutton...............................................................5-29
Other Applications for the Target Reset Function......................................................5-29
FIGURES
Figure 5.1: Trip Logic................................................................................................................................5-2
Figure 5.2: Minimum Trip Duration Timer Operation (see bottom of Figure 5.1) ...................................5-3
Figure 5.3: Three-Pole Open Logic (top) and Switch-Onto-Fault Logic (bottom) ...................................5-6
Figure 5.4: Communications-Assisted Tripping Scheme ..........................................................................5-9
Figure 5.5: Permissive Input Logic Routing to POTT Logic ..................................................................5-13
Figure 5.6: POTT Logic...........................................................................................................................5-16
Figure 5.7: Permissive Input Logic Routing to Trip Logic .....................................................................5-17
Figure 5.8: SEL-351P Recloser Control Connections to Communications Equipment for a Two-
Terminal Line POTT Scheme ......................................................................................5-18
Figure 5.9: SEL-351P Recloser Control Connections to Communications Equipment for a Three-
Terminal Line POTT Scheme ......................................................................................5-18
Figure 5.10: DCUB Logic........................................................................................................................5-22