Deif SGC 420 - Page 58

No. Alarms Causes/Indication Actions
19 L3 Phase Under Voltage
Indicates that genset (L3) phase voltage has fallen below
the preset under-voltage threshold.
Shutdown
Warning
20 DG Phase Reversed Alternator phase sequence (L1-L2-L3) is not correct.
None
Shutdown
Warning
Electrical Trip
Notification
21 Mains Phase Reversed Mains is in unhealthy condition.
None
Notification
22 Over Frequency
Indicates that genset output frequency has exceeded the
preset threshold.
Shutdown
Warning
23 Under Frequency
Indicates that genset output frequency has fallen below the
preset threshold.
Shutdown
Warning
24 Over Current
Indicates that genset current has exceeded the preset
threshold.
None
Shutdown
Warning
Electrical Trip
Notification
25 Over Load
Indicates that the measured kW load rating has exceeded
the preset threshold.
None
Shutdown
Warning
Electrical Trip
Notification
26 Unbalanced Load
Load on any phase is greater or less than other phases by
a threshold value.
None
Shutdown
Warning
Electrical Trip
Notification
27
Over Speed
Indicates that genset speed has exceeded the preset
overspeed threshold. Genset will shut down after
Overspeed delay.
Shutdown
28 Gross Over Speed
Indicates that genset speed has exceeded the preset
Gross overspeed threshold. Genset will shut down
immediately without any delay.
Shutdown
29 Under Speed The engine speed has fallen below the preset RPM. Shutdown
30 Charge Fail
The charge alternator voltage has dropped below the
preset threshold.
None
Shutdown
Warning
Electrical Trip
Notification
31 Battery Under Voltage The battery voltage has fallen below the preset threshold.
None
Shutdown
Warning
Electrical Trip
Notification
32 Battery Over Voltage The battery voltage has exceeded the preset threshold.
None
Shutdown
Warning
Electrical Trip
Notification
33 High Oil Press Detected
Lube oil pressure is detected above the crank disconnect
threshold when the engine is off.
Warning
USER MANUAL 4189341227A UK Page 58 of 86