Appendix L L-PRO Setting Example
Appendix L-12
L-PRO 4000 User Manual
D02706R02.30
Main and
Auxiliary Circuit
Breaker Trip
Logic
ProLogic statement 1 and 3 are used to provide a common tripping logic point
for the circuit breaker this is analogous to creating a dc trip bus to gather the
trip and no reclose or trip and reclose signals. VI2 and VI4 are (VI2 for main
and VI4 for auxiliary) the trip and no reclose while VI5 is the trip and reclose
(common to main and auxiliary) signal.
Figure L.22: ProLogic 1 – 52-1 Trip
Figure L.23: ProLogic 3 – 52-2 Trip
Summary of Contents for L-PRO 4000
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