Schweitzer Engineering SEL-351P - Section 5: Trip and Target Logic

Date Code 990215 Trip and Target Logic i
SEL-351P Manual Técnico
TABLE OF CONTENTS
SECTION 5: TRIP AND TARGET LOGIC ...............................................5-1
Trip Logic .....................................................................................................................................5-1
Set Trip .................................................................................................................................
5-3
Unlatch Trip..........................................................................................................................
5-4
Other Applications for the Target Reset Function........................................................
5-4
Factory Settings Example (using setting TR).......................................................................
5-4
Program an Output for Tripping ...........................................................................................
5-5
Switch-Onto-Fault (SOTF) Trip Logic.........................................................................................
5-5
Three-Pole Open Logic.........................................................................................................
5-6
Determining Three-Pole Open Condition Without Circuit Breaker Auxiliary
Contact ..................................................................................................................
5-7
Circuit Breaker Operated Switch-Onto-Fault Logic.............................................................
5-7
Close Bus Operated Switch-Onto-Fault Logic .....................................................................
5-7
Switch-Onto-Fault Logic Output (SOTFE) ..........................................................................
5-8
Switch-Onto-Fault Trip Logic Trip Setting (TRSOTF) .......................................................
5-8
Communications-Assisted Trip Logic – General Overview.........................................................
5-9
Enable Setting ECOMM.......................................................................................................
5-9
Trip Setting TRCOMM ......................................................................................................
5-10
Trip Settings TRSOTF and TR...........................................................................................
5-11
Trip Setting DTT ................................................................................................................
5-11
Use Existing SEL-321 Relay Application Guides for the SEL-351P Recloser
Control ........................................................................................................................
5-11
Optoisolated Input Settings Differences Between the SEL-321 and SEL-351P
Recloser Control..................................................................................................
5-12
Trip Settings Differences Between the SEL-321 and SEL-351P Recloser
Control.................................................................................................................
5-12
Permissive Overreaching Transfer Trip (POTT) Logic .............................................................
5-12
Use Existing SEL-321 Relay POTT Application Guide for the SEL-351P Recloser
Control ........................................................................................................................
5-13
External Inputs....................................................................................................................
5-13
PT1 – Received Permissive Trip Signal(s) .................................................................
5-13
Timer Settings.....................................................................................................................
5-14
Z3RBD – Zone (Level) 3 Reverse Block Delay .........................................................
5-14
EBLKD – Echo Block Delay ......................................................................................
5-14
ETDPU – Echo Time Delay Pickup............................................................................
5-14
EDURD – Echo Duration............................................................................................
5-14
Logic Outputs......................................................................................................................
5-14
Z3RB – Zone (Level) 3 Reverse Block.......................................................................
5-14
ECTT – Echo Conversion to Trip...............................................................................
5-14
KEY – Key Permissive Trip .......................................................................................
5-14
EKEY – Echo Key Permissive Trip............................................................................
5-15
Variations for Permissive Underreaching Transfer Trip (PUTT) Scheme.........................
5-17
Installation Variations.........................................................................................................
5-17
Directional Comparison Unblocking (DCUB) Logic.................................................................
5-18