Date Code 990215
Trip and Target Logic
iii
SEL-351P Manual Técnico
Figure 5.11: Unblocking Block Logic Routing to Trip Logic .................................................................5-23
Figure 5.12: SEL-351P Recloser Control Connections to Communications Equipment for a Two-
Terminal Line DCUB Scheme (setting ECOMM = DCUB1) .....................................5-24
Figure 5.13: SEL-351P Recloser Control Connections to Communications Equipment for a
Three-Terminal Line DCUB Scheme (setting ECOMM = DCUB2)...........................5-24
Figure 5.14: DCB Logic ..........................................................................................................................5-27
Figure 5.15: SEL-351P Recloser Control Connections to Communications Equipment for a Two-
Terminal Line DCB Scheme ........................................................................................5-28
Figure 5.16: SEL-351P Recloser Control Connections to Communications Equipment for a
Three-Terminal Line DCB Scheme .............................................................................5-29
Figure 5.17: Seal-in of Breaker Failure Occurrence for Message Display..............................................5-30
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