Manual 37259C
SPM-D11 - Synchronizing Unit
Page 60/79
© Woodward
Dead Bus Operation
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If the busbar is in a voltage-free state (dead bus), a direct closing (dead bus start) of the generator circuit
breaker (GCB) may be carried out.
Gen. circ.break.
Dead bus op. ON
Dead bus start of power circuit breaker
ON/OFF
ON
................Enabling of the dead bus start function. To close the generator circuit
breaker on to the voltage-free busbar additional conditions must be
met [see chapter "Closing the CB Without Synchronization (Dead
Bus Start)" starting on page 25]. The following screens of this func-
tion are displayed.
OFF
..............Dead bus starts are not performed and the following screens of this
function are not displayed.
Dead bus op. GCB
df max = 0.00Hz
Maximum differential frequency for CB dead bus start
0.05 to 5.00 Hz
The prerequisite for issuing the close command is that the generator frequency may
not deviate from the rated frequency by more than this set value.
Dead bus op. GCB
dV max = 00V
Maximum differential voltage for CB dead bus start
[1] 1 to 20 V, [4] 1 to 60 V
The prerequisite for issuing the close command is that the generator voltage may
not deviate from the rated voltage by more than this set value.
