DATAKOM DKG-705 User’s Manual
705_USER.doc
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Definition
Source
Description
Parallel Mains Fail
Internal
This general warning is set if any of the protection functions have
detected a mains failure during
parallel with mains
operation.
Mains Reverse Power
Internal
In
parallel with mains
operation and after the parallel check
timeout delay (
P_A23
) has elapsed, this warning will be set if the
mains power is negative and over the reverse power limit defined in
P_A24
.
Mains Frequency Fail
R
In parallel with mains operation and after the parallel check timeout
delay (
P_A23
) has elapsed, this warning will be set if the mains
frequency is out of the limits defined in
P_522
and
P_523
for 4
consecutive cycles.
No Mains Frequency
R
In parallel with mains operation and after the parallel check timeout
delay (
P_A23
) has elapsed, this warning will be set if the mains
frequency disappears for more than 2,5 periods.
ROCOF (df/dt) Fail
R
In parallel with mains operation and after the parallel check timeout
delay (
P_A23
) has elapsed, this warning will be set if the mains
frequency change exceeds the limit defined in
P_A25
for 4
consecutive cycles.
Vector Shift (df/dt) Fail
R
In parallel with mains operation and after the parallel check timeout
delay (
P_A23
) has elapsed, this warning will be set if the phase of
the mains measured on last 2 cycles jumps over the limit defined
in
P_A26
on the phase measured on last 4
th
and 5
th
period.
Communication Lost
(dual genset mode)
Serial
Comm.
Set if the serial communication between Master and Slave gensets
is interrupted and
Single Genset Load Enable
parameter (
P_A32
)
is set to
1
.
