9400200990 Rev I DGC-2020 BESTCOMSPlus Software 4-41
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 4-38.
Figure 4-38. 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.
E
Mains Fail Return Delay: Adjustable from 0 to 1,800 s in 1 s increments.
F
Mains Fail Max Transfer Time: Adjustable from 10 to 120 s in 1 s increments.
G
Contact Type: Continuous or Pulse.
H
Open Pulse Time: Adjustable from 0.01 to 0.80 s in 0.01 s increments.
I
Close Pulse Time: Adjustable from 0.01 to 0.80 s in 0.01 s increments.
J
Breaker Closing Time: Adjustable from 0 to 800 ms in 5 ms increments.
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