Schweitzer Engineering SEL-351P, Быстрый старт

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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