DSE 8610 MKII, Operator'S Manual

Page: 141 / 188

Protections
Page 141 of 188 057-254 ISSUE: 2
Fault Description
Gen Phase Seq Wrong
IEEE C37.2 – 47 Phase Sequence
Relay
The module detected that the phase rotation of the generator was
different to the configured Generator Phase Rotation Alarm setting.
Gen Reverse Power
IEEE C37.2 – 32 Directional Power
Relay
The module detected that the generator output kW had fallen below
the Reverse Power Trip for the configured delay timer.
Gen Short Circuit
IEEE C37.2 – 51 IDMT Short Circuit
Relay
NOTE: For more details, see section entitled Short Circuit
IDMT Alarm elsewhere in this document.
The module detected that the generator output current had risen
above the Short Circuit Trip for the duration of the IDMT function.
Inlet Temperature
The module detected that the engine’s ECU measurement of inlet
temperature had risen above the Inlet Temperature Alarm Trip level.
Insufficient Capacity
The module’s governor output has reached its limit whilst attempting
to control the generator to produce more kWs whilst in parallel. This
indicates a fault with either the governor (including connection error),
setting of SW2, or that the engine has reached its maximum
capacity.
kW Overload
IEEE C37.2 – 32 Directional Power
Relay
The module detected that the generator output kW had risen above
the Overload Protection Trip for the configured delay timer.
Loss of Excitation
The module detected that the generator output kvar had fallen below
the Loss of Excitation Alarm Trip level for the configured delay.
Loss of Mag-PU
The module detected that the magnetic pick up was not producing a
pulse output after the required Crank Disconnect criteria had been
met.
Mains Decoupling OF
The module detected that the mains frequency had risen above the
Mains Decoupling Over Frequency Trip level when the generator
was in parallel with the mains.
Mains Decoupling OV
The module detected that the mains voltage had risen above the
Mains Decoupling Over Voltage Trip level when the generator was in
parallel with the mains.
Mains Decoupling UF
The module detected that the mains frequency had fallen below the
Mains Decoupling Under Frequency Trip level when the generator
was in parallel with the mains.
Mains Decoupling UV
The module detected that the mains voltage had risen above the
Mains Decoupling Under Voltage Trip level when the generator was
in parallel with the mains.
Mains ROCOF
The module detected that the mains frequency had changed at a
rate larger then the Mains ROCOF Alarm Trip level when the
generator was in parallel with the mains.
Mains Vector Shift
The module detected that the mains voltage waveform’s vector had
shifted more then the Mains Vector Shift Alarm Trip level when the
generator was in parallel with the mains.
Maintenance Due
NOTE: Due to module configuration the alarm message
that appears on the display may be different. For further details
of module configuration, refer to DSE Publication: 057-238
DSE8610 MKII Configuration Suite PC Software Manual.
The module detected that one of the configured maintenance alarms
is due as its configured maintenance interval has expired.
MSC Failure
That module detected that the MSC communication failed, most
likely caused by it being disconnected.
MSC ID Error
The module detected that another module on the MSC link had the
same GenSet MSC ID configured.
Continued over page…