Basler DGC-2020 Instruction Manual page 97

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
Typically, this parameter is set to be longer than twice the breaker closing time.
The dead bus close enable setting
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.
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.
9400200990 Rev I
L
enables a machine to close its breaker onto a dead bus. This can be
Figure 4-38. Breaker Hardware Settings
DGC-2020 BESTCOMSPlus Software
K
.
4-41