VAMP 52 - Page 192

7.3 Trip circuit supervision 7 Application Technical description
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Figure 7.3.2-1 Trip circuit supervision with two 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.
Figure 7.3.2-2 Trip circuit supervision with two digital inputs. The CB is in
the open position. The two digital inputs are now in series.