Dead Bus Closing Gcb - Woodward easYgen-2000 Series User Manual

Operation of the circuit breakers
4.5.1.1

Dead Bus Closing GCB

37535B
Configure Application > Configure Breakers > Dead Bus Closing GCB
The configuration of pulse switching takes place in the following
screen and has the described effect on the signal sequence (the
MCB cannot be controlled by the continuous pulse for security rea‐
sons, because otherwise, the MCB would be opened in case of a
failure/exchange of the easYgen).
The parameter "Enable MCB" allows/prevents the closing of the
MCB. A closed MCB will not be opened.
If the parameter "Auto unlock" is configured to YES, an open pulse
will be issued prior to each close pulse.
The following applies to application modes
.
The unit closes the GCB without synchronization, if the following
conditions are met. The display indicates "GCB dead bus cls".
Automatic operation
The operating mode AUTOMATIC has been selected
n
No class C alarm or higher is present
n
The engine is running
n
The engine delayed monitoring (parameter
n
well as the generator stable time (parameter
have been expired or the LogicsManager function "Undelay
close GCB" (parameter
The generator voltage and frequency are within the configured
n
operating range (
Voltage / Frequency" on page 107 )
The MCB has been opened for at least the time configured in
n
"Transfer time GCB↔MCB" (parameter
(Mode with open transition mode only)
The function "Start without load" (parameter
n
has been disabled through the LogicsManager
Only in critical mode: the parameter "Close GCB in override"
n
(parameter 4100 Ä p.
The busbar voltage is below the dead bus detection limit
n
(parameter 5820 Ä p.
There is no other GCB closed in the same segment
n
There is no other device with a smaller device ID willing to
n
close its GCB too (Dead busbar closure negotiation)
Manual operation
The operating mode MANUAL has been selected.
n
No class C alarm or higher is present
n
The engine is running
n
The engine delayed monitoring (parameter
n
well as the generator stable time (parameter
have been expired
The generator voltage and frequency are within the configured
n
operating range (
Voltage / Frequency" on page 107 )
The button "Close GCB" has been pressed
n
easYgen-2200/2500 | Genset Control
12210 Ä p. 204) is enabled
Ä Chapter 4.4.1.1 " Generator Operating
3400 Ä p.
268) is configured to "Yes"
201)
Ä Chapter 4.4.1.1 " Generator Operating
Configuration
and
3315 Ä p. 239) as
3415 Ä p. 204)
201)
12540 Ä p. 247)
3315 Ä p. 239) as
3415 Ä p. 204)
191