Inhibit Disables the alarm when ...
No generator frequency The generator frequency is below 10 % of the nominal frequency.
Controller under SWBD
control
The Local > Mode > Switchboard control digital input is activated, OR a system problem forced the
controller under switchboard control.
ACM wire break
All these conditions are met:
• The 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 system > 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.
8.7.4 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 GENSET controller, as well as which general alarm corresponds
to each GENSET controller alarm.
Table 8.28
Breaker alarm names for the GENSET controller
GENSET alarm Configure > Parameters > General name
GB synchronisation failure
Breakers > Generator breaker monitoring > Synchronisation
failure
Breaker synchronisation failure
GB de-load failure Breakers > Generator breaker monitoring > De-load failure Breaker de-load failure
Vector mismatch Breakers > Generator breaker monitoring > Vector mismatch Vector mismatch
GB opening failure Breakers > Generator breaker monitoring > Opening failure Breaker opening failure
GB closing failure Breakers > Generator breaker monitoring > Closing failure Breaker closing failure
GB position failure Breakers > Generator breaker monitoring > Position failure Breaker position failure
GB trip (external) Breakers > Generator breaker monitoring > Tripped (external) Breaker trip (external)
GB short circuit Breakers > Generator breaker monitoring > Short circuit Breaker short circuit
GB 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
8.7.5 AC alarms
More information
The AC configuration and nominal settings chapter describes AC alarms in general.
The following tables show where to configure these alarms for the GENSET controller.
DESIGNER'S HANDBOOK 4189340911K UK Page 311 of 521
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