Deif Multi-line 2 - Page 139

AGC Designer’s Reference Handbook
DEIF A/S Page 139 of 168
Flowchart 1, GB handling
Start
excitation
Delay 2
expired
Delay 3
expired
"Close before
excitation"
failure
Activate
regulators
Yes
Yes
UBUS OK
END
Delay 3
expired
"Close before
excitation"
failure
No
Yes
UBUS OK
Yes
No
RPM > SP1
Delay 1
expired
Close GB
RPM >
SP2
Delay 1
expired
Trip GB
Yes
No
Yes
Delay 1 expired
on all DG(s)
Start
excitation
Yes
Yes
Delay 2
expired
Activate
regulators
Yes
Sync GB
No
Yes
Yes
No
No
No
No
No
No
START
Start DG(s)
No