Datakom DKG-705 - Page 17

DATAKOM DKG-705 User’s Manual
705_USER.doc - 17 -
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.