Basler Electric DGC-2020HD - Manual (Page 90)

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Figure 39. Settings Explorer, System Parameters, System Settings
Breaker Hardware Settings
BESTCOMSPlus ® Navigation Path: Settings Explorer, Breaker Management, Breaker Hardware
Front Panel Navigation Path: Settings Explorer > Breaker Management > Breaker Hardware
Breakers controlled by pulse or continuous inputs are supported. Separate settings for each breaker’s
open and close pulse widths are provided as well as a transition delay. During the transition delay, open
or close outputs are removed to allow any breaker interlocks to reset before a new open or close output is
initialized.
During synchronization of the generator with the bus (Anticipatory mode only), the DGC-2020HD uses the
breaker closing time to calculate the optimum time to close the breaker.
When a close command is issued, the DGC-2020HD monitors the breaker status and annunciates a
breaker failure if the breaker does not close within the time defined by the breaker fail wait time delay.
Typically, this parameter is set to be longer than twice the breaker closing time.
The Breaker Fail Output Configuration setting dictates whether the breaker output is removed or
maintained during the breaker open fail or breaker close fail pre-alarm conditions.
After a breaker open or close failure occurs, the DGC-2020HD can attempt to reopen or reclose the
breaker a pre-defined number of times. The number of attempts to open or close the breaker and the
duration of time between each attempt are user-programmable.
When an external device changes the state of the breaker, the External Status Change Action setting
dictates how the DGC-2020HD responds to the state change. The DGC-2020HD can ignore external
breaker state changes, always follow breaker state changes, or only follow breaker state changes when in
Auto mode. When the DGC-2020HD is following external breaker state changes, it issues outputs that
Breaker Management DGC-2020HD