Winco DGC-2020 - Manual (Page 122)

During synchronization of the generator with the bus (Anticipatory mode only), the DGC-2020 uses the
breaker closing time
J to calculate the optimum time to close the breaker.
When a close command is issued, the DGC-2020 monitors the breaker status and annunciates a breaker
failure if the breaker does not close within the time defined by the breaker-close wait-time delay
K .
Typically, this parameter is set to be longer than twice the breaker closing time.
The dead bus close enable setting
L enables a machine to close its breaker onto a dead bus. This can be
used to make sure only one machine can close onto a dead bus at a time, if desired, preventing multiple
machines closing to the dead bus at the same time, potentially out of phase with each other. When this
setting is disabled, a machine can only close onto a stable bus.
BESTCOMSPlus breaker hardware settings (DGC-2020, Breaker Management, Breaker Hardware) are
illustrated in Figure 4-49.
Figure 4-49. Breaker Hardware Settings
A Generator Breaker: Configured, NOT Configured.
B Mains Breaker: Configured or NOT Configured.
C Mains Fail Transfer: Enable or Disable. This setting does not apply when generator frequency is
400Hz.
D Mains Fail Transfer Delay: Adjustable from 1 to 300 s in 1 s increments. This specifies the delay
between detection of failed mains to initiation of the transfer to the generator.
4-52 DGC-2020 BESTCOMSPlus Software 9400200990 Rev K