9328900990 Rev L BE1-951 Application 8-15
OC-W-79 Logic Settings and Equations (Overcurrent with Reclosing)
SL-N=OC-W-79
SL-50TP=1,79SCB; SL-50TN=1,79SCB+/IN4; SL-50TQ=1,79SCB+/IN4
SL-150TP=1,0; SL-150TN=1,0; SL-150TQ=1,0
SL-51P=1,0
SL-51N=1,/IN4
SL-51Q=1,/IN4
SL-151N=0,0
SL-24=0,0
SL-25=0,0
SL-27P=0,0; SL-27X=0,0
SL-47=0,0
SL-59P=0,0; SL-59X=0,0
SL-159X=0,0
SL-81=0,0
SL-181=0,0
SL-281=0,0
SL-381=0,0
SL-481=0,0
SL-581=0,0
SL-32=0,0
SL-62=0,0,0
SL-162=0,0,0
SL-79=1,VO8,/IN1,VO12,VO9
SL-86=0,0,0
SL-186=0,0,0
SL-BF=0,0,0
SL-GROUP=1,0,0,0,0,/0
SL-43=0
SL-143=0
SL-243=0
SL-343=0
SL-101=0
SL-VOA=0
SL-VO1=VO11
SL-VO2=79C
SL-VO3=0
SL-VO4=ALMMIN
SL-VO5=ALMMAJ
SL-VO6=0
SL-VO7=0
SL-VO8=VO11+IN3
SL-VO9=150TPT+150TNT+150TQT+/IN2
SL-VO10=0
SL-VO11=50TPT+150TPT+50TNT+150TNT+50TQT+150TQT+51PT+51NT+51QT
SL-VO12=50TPPU+150TPPU+50TNPU+150TNPU+50TQPU+150TQPU+51PPU+51NPU+51QPU
SL-VO13=0
SL-VO14=0
SL-VO15=0
OC-W-CTL LOGIC SCHEME
Logic scheme OC-W-CTL is intended for use on feeder breakers. This scheme provides overcurrent
protection, breaker failure protection, reclosing, and the control functions required for typical feeders in
non-directional overcurrent protection applications.
In OC-W-CTL, automatic reclosing uses a recluse initiate scheme and is initiated by a protective trip or by
an external reclose initiate (RI) contact.
The components of OC-W-CTL logic are summarized in Tables 8-9, 8-10, 8-11, and 8-12.
Figure 8-5
shows a one-line drawing for the OC-W-CTL logic scheme. A diagram of OC-W-CTL logic is shown in
Figure 8-6.
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