Inhibit
Disables the alarm when ...
Shaft breaker closed
The
Breakers > Shaft generator breaker > Feedback > SGB closed
digital input is activated.
Shaft breaker open
The
Breakers > Shaft generator breaker > Feedback > SGB open
digital input is activated.
Generator voltage present
The shaft generator voltage is above 10 % of the nominal voltage.
No generator voltage
The shaft generator voltage is below 10 % of the nominal voltage.
Generator frequency
present
The shaft generator frequency is above 10 % of the nominal frequency.
No generator frequency
The shaft generator frequency is below 10 % of the nominal frequency.
Power take home active
The
Breakers > Shaft generator breaker > Command > PTH mode
digital input is activated.
Controller under SWBD
control
The
Local > Mode > Switchboard control
digital input is activated, OR a system problem forced the
controller under switchboard control.
Engine stopping
ACM wire break
All these conditions are met:
•
The shaft generator breaker is closed
•
Voltage is detected by one set of ACM voltage measurements
•
No voltage is detected on a phase, or on all three phases for the other set of ACM voltage
measurements
Inhibit 1
The
Alarm systems > Inhibits > Activate inhibit 1
digital input is activated.
Inhibit 2
The
Alarm systems > Inhibits > Activate inhibit 2
digital input is activated.
Inhibit 3
The
Alarm systems > Inhibits > Activate inhibit 3
digital input is activated.
10.5.4 Breaker alarms
More information
The
Breakers, synchronisation and de-loading
chapter describes breaker handling and alarms in general.
The following table shows where to configure these alarms for the SHAFT generator controller, as well as which general alarm
corresponds to each SHAFT generator controller alarm.
Table 10.17
Breaker alarm names for the SHAFT generator controller
SHAFT generator alarm
Configure > Parameters >
General name
SGB synchronisation failure
Breakers > Shaft breaker monitoring > Synchronisation failure Breaker synchronisation failure
SGB de-load failure
Breakers > Shaft breaker monitoring > De-load failure
Breaker de-load failure
Vector mismatch
Breakers > Shaft breaker monitoring > Vector mismatch
Vector mismatch
SGB opening failure
Breakers > Shaft breaker monitoring > Opening failure
Breaker opening failure
SGB closing failure
Breakers > Shaft breaker monitoring > Closing failure
Breaker closing failure
SGB position failure
Breakers > Shaft breaker monitoring > Position failure
Breaker position failure
SGB trip (external)
Breakers > Shaft breaker monitoring > Tripped (external)
Breaker trip (external)
SGB short circuit
Breakers > Shaft breaker monitoring > Short circuit
Breaker short circuit
SGB configuration failure
-
Breaker configuration failure
Generator phase sequence error Generator > AC setup > Phase sequence error
Phase sequence error
Busbar phase sequence error
Busbar > AC setup > Phase sequence error
Phase sequence error
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