DATAKOM DKG-705 User’s Manual
705_USER.doc
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Timeout
energized (for parallel to mains) and before the
protections for mains failure are enabled.
These protections will deenergize the mains
contactor in case of a mains failure in order to
prevent the genset from feeding the network.
10
A24
Reverse Power
Limit
KW
0
1000 This parameter defines the sensitivity of the
reverse power protection while operating in
parallel with the mains. When the parallel
protections are enabled, if the genset supplies
a power over this limit to the mains, the mains
contactor will be deenergized and a warning
will be generated. It is advised to set this
parameter to 15% of the genset power rating.
10
A25
ROCOF df/dt
Limit
Hz/Sec 1.0 25.0 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 deenergized and a
warning will be generated. It is advised to set
this parameter to 4 Hz/Sec.
10
A26
Vector Shift Limit
Degr.
1
30 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
deenergized and a warning will be generated.
It is advised to set this parameter to 10
degrees.
10
A27
Peak Lopping
Enable
-
0
1
0: Peak lopping disabled.
In AUTO mode the
genset will start only if a mains failure occurs.
1: Peak lopping enabled.
In AUTO mode, the
genset will start and share the load if the
mains power exceeds
P_A29
(genset start
power).
10
A28
Peak Lopping:
Mains Power Limit
KW
0
5000 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.
10
A29
Peak Lopping:
Genset Start Limit
KW
0
5000 In
peak lopping
mode the genset will start
and enter in parallel with the mains only if the
mains power exceeds this limit. However it will
supply power to the load only if the load power
exceeds
P_A28
(mains power limit). This
parameter should be set lower than
P_A28
.
10
A30
Peak Lopping:
Genset Stop Limit
KW
0
5000 In
peak lopping
mode the genset will stop
only when the total load power falls below this
limit. This parameter should be set lower than
P_A29
(genset start limit).
10
A31
Dual Genset
Operation Enable
-
0
1
0:
Single genset operation.
1:
Dual genset operation.
