Voltage rerun level
At parameter 2265, it is set how low the voltage must be, before it is allowed to close the breaker during the rerun. If the voltage is
not below the “voltage rerun level” before the “voltage discharge timer” has expired, the specific genset will be excluded from the
CBE rerun sequence.
Parameter Item Range Default Note
2265 Voltage rerun level
30 %
100 %
30 %
Parameter is not shared
between gensets!
Voltage discharge timer
The timer can be found at parameter 2264 and represents how long time it takes from the excitation is removed until the voltage is
below “voltage rerun level”. The voltage discharge timer can be started either from a new start request or from when the generator
breaker opens. The different reactions are dependent on the selection of “excitation control during cooldown”. The two rerun
sequences shown below may enhance the understanding:
Time
0
% of nominal
voltage
100
GB open
Voltage rerun
level (2265)
Voltage
discharge
(2264)
New start
request
GB close
CBE Break Lim
(2252) expired
In the diagram above, the excitation is shut off as soon as the breaker is opened. Shortly after the breaker is opened, a new start
request appears. The controller will wait with the closing of the GB until the “voltage discharge timer” has expired.
DESIGNER'S HANDBOOK 4189341275A EN Page 95 of 196
To Next Page
Loading...
Need help?
General
