Table 9.13 Busbar AC alarm names for the EMERGENCY genset controller
EMERGENCY genset alarm Configure > Parameters > General name
Busbar over-voltage 1 or 2 Busbar > Voltage protections > Over-voltage 1 or 2 Busbar over-voltage
Busbar under-voltage 1 or 2 Busbar > Voltage protections > Under-voltage 1 or 2 Busbar under-voltage
Busbar voltage unbalance Busbar > Voltage protections > Voltage unbalance Busbar voltage unbalance
Busbar over-frequency 1 or 2 Busbar > Frequency protections > Over-frequency 1 or 2 Busbar over-frequency
Busbar under-frequency 1 or 2 Busbar > Frequency protections > Under-frequency 1 or 2 Busbar under-frequency
9.9.6 Non-essential loads
You can connect up to three non-essential load trips (NEL) to the EMERGENCY genset controller. However, the NEL trips are
inhibited when either the generator breaker or the tie breaker is open.
NELs cannot be connected to the emergency busbar. The NELs must be connected to the section that the tie breaker connects to.
If Configure > Parameters > Non-essential load trip > Trip # > Settings > Trip when breaker trips is Enabled, then, if either the
generator breaker or the tie breaker trips, the controller activates the Non-essential load trip # output.
More information
See Alarms, Non-essential loads for more information.
9.9.7 EDG not ready for blackout
This alarm is activated if the emergency genset is not ready to respond to a blackout.
The alarm is not activated under the following conditions:
• Harbour operation.
• Under switchboard control, with the engine running, the generator breaker closed and the tie breaker open.
Configure the parameters under Configure > Parameters > Local power management > Emergency generator > EDG not
ready for blackout.
Table 9.14
Default parameters
Parameter Range Default
Delay 1 s to 3 min 7 s*
Enable Not enabled, Enabled Enabled
Action Warning
*Note: If the parameter Engine > Stop sequence > Extended stop is increased, an engine stop can activate this alarm. To avoid this,
increase the EDG not ready for blackout > Delay too.
DESIGNER'S HANDBOOK 4189340911K UK Page 351 of 521
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