Functions
6-142
7SA522 Manual
C53000-G1176-C119-2
set to
∞
. This does not suppress the pick-up annunciations, but merely prevents the
timer from expiring.
The setting parameter
(address
) determines if it is possible to
use the binary input “
!2&,QVW75,3
” to bypass the trip delay times
(ad-
dress
) and
(address
). The binary input (if assigned) is common
to all stages of the overcurrent protection. With
<HV
it is therefore
determined that the I>–stages trip without time delay following pick-up, if an operate
signal is present at the binary input; if the setting is
1R
the set trip
time delays always come into force.
If the I>-stage is to trip when switching the line on to a fault with or without a short de-
lay,
(address
, see above and refer to Sub-section “Gener-
al”), the parameter
(address
) is set to Yes. We recommend, however,
not to choose the sensitive setting for the switch on to fault function as energyzing of
the line causes a large fault current. It is important to avoid that the selected stage
picks up in a transient way when energizing the line.
Summary of Contents for siprotec 7SA522
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Page 89: ...SIPROTEC 4 Devices 4 25 7SA522 Manual C53000 G1176 C119 2 Figure 4 20 CFC Logic example ...
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Page 620: ...Appendix B 48 ...
