7.4 Trip circuit supervision
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Figure 7.4.3-1 Trip circuit supervision with two dry digital inputs. The CB is
closed. The supervised circuitry in this CB position is double-lined. The
digital input is in active state when the trip circuit is complete. This is
applicable for dry inputs DI7...D20 only.
Figure 7.4.3-2 Trip circuit supervision with two dry digital inputs. The CB is
in the open position. The two digital inputs are now in series.
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