Datakom D-500 MK2 - Synchronization: Multi-Genset and Mains Protection

D-500 MK2 User Manual Firmware V-6.3
- 137 -
Parameter Definition
Unit
Min
Max
Factory
Set
Description
Multi Genset Delayed
Stop
%
0
120
30
If the total active load is below this level
during the period defined in Genset Start
Power parameter, the slave genset will
stop.
Multi Genset Run/Stop
Delay
sec
0
240
10
This is the time delay used for starting
and stopping of the slave genset.
Related starting and stopping power
levels are defined in parameters Multi
Genset Delayed Start and Multi Genset
Delayed Stop.
Load Management Inhibit
Delay
sec
0
43200
30
This is the period after all gensets closed
to busbar and before the load
management function is put in service.
Parallel Check Delay
sec
0
25.0
0.2
This is the delay after the mains contactor
is energized (for parallel to mains) and
before the protections for mains failure
are enabled.
ROCOF df/dt (Hz/Sec)
HZ
0.5
15.0
5.0
This parameter defines the sensitivity of
the ROCOF (rate of change of frequency)
protection while operating in parallel with
mains. When the parallel protections are
enabled, if the mains frequency change
exceeds this limit for 4 consecutive
periods, the mains contactor will be de-
energized and a warning will be
generated.
Vector Shift Limit
Deg.
1
30
10
This parameter defines the sensitivity of
the vector shift protection while operating
in parallel with mains. When the parallel
protections are enabled, if the phase of
the mains measured on last 2 cycles
jumps over this limit on the phase
measured on last 4
th
and 5
th
period, the
mains contactor will be de-energized and
a warning will be generated. It is advised
to set this parameter to 10 degrees.
Peak Lopping Enable
-
0
1
0
0: Peak lopping disabled. In AUTO
mode the unit will start multi genset
system only if a mains failure occurs.
1: Peak lopping enabled. In AUTO
mode, the multi genset system will start
and share the load if the mains power
exceeds Peak Lopping Start Power
parameter.
Peak Lopping Maximum
Mains Power
kW
0
65000
100
In peak lopping mode, the unit will not
allow the mains to deliver to the load a
power higher than this limit in order to
protect the mains.
Peak Lopping Stop
Power
kW
0
65000
60
In peak lopping mode the multi genset
system will stop only when the total load
power falls below this limit. This
parameter should be set lower than
Peak Lopping Start Power parameter.
Peak Lopping Start /Stop
Delay
sec
0
240
10
In peak lopping mode the multi genset
system will start/stop when load power
exceeds the limits during this period.