Woodward LS-5 v2 Series - Breakers; Dead Bus Closure CB

In this application mode the device
expects to see minimum 1 other
easYgen. This also is the application
mode for multiple LS-5 units
operation. The commands to close
and open the breakers come from
outside. In this mode a PLC can
control the LS-5 units.
Notes
This parameter is only valid if the
'Breaker mode LS5' (parameter 9018)
is con󰈡gured to 'CBA/CBB'. Otherwise
please refer to the according manual.
4.4.2
Breakers
4.4.2.1 Dead Bus Closure CB
General notes
NOTICE!
A dead bus closure can also be performed in the case of a mains failure. If the dead bus
closure should not be performed, the corresponding parameters must be switched "O󰈠"
(parameter
8802, 8803 or 8804).
If the Dead busbar closure CBA is executed within the LS5x2 mode, the breaker feedback
CBB is taken into account. That means with opened CBB and no CBB closure is active,
the system B voltage is assumed as dead for the CBA dead bus closure logic. On the
other hand, if the CBB is closed, the real system B is evaluated.
ID Parameter CL Setting range
[Default]
Description
Tab. 16: Dead Bus Closure CB Parameter
3432 Dead bus closure CB 2 On Dead bus closure possible according
to the conditions de󰈡ned by
parameters 8802, 8803, 8804, 8805
and 5820.
[O󰆞] No dead bus closure possible.
5820 Dead bus detection max. volt. 2 0 to 30 %
[10 %]
If system A/B voltage falls below this
percentage of system A/B rated
voltage for the time con󰈡gured by
parameter 8805, a dead bus condition
is detected.
8805 Dead bus closure delay time 2 0.0 to 20.0 s
[5.0 s]
The system voltage must below the
value con󰈡gured in parameter 5820
for at least the time de󰈡ned here to
153LS-5 v2 Series37650
4 Con󰈡guration
4.4 Con󰈡gure Application
Released