Datakom DKG-705 - 7. LOAD TRANSFER MODES

DATAKOM DKG-705 User’s Manual
705_USER.doc - 22 -
7. LOAD TRANSFER MODES
The DKG-705 has more than one ways of transferring the load from genset to mains and vice
versa.
These modes are:
-transfer with interruption,
-no break transfer, (with or without synchronization)
-soft transfer.
7.1 Transfer with Interruption
This is the most conventional way of transferring the load between the genset and mains. There
will be a power interruption period duration during the transfer. Note that the program parameters P_508
and P_509 define the power interruption period.
If this transfer method is used, it is advised to make an electrical interlock
between the two contactors to prevent a phase to phase short circuit.
Transfer from genset to mains:
-The generator contactor releases,
-The unit waits for Mains Contactor Timer (P_508)
-The mains contactor is energized.
Transfer from mains to genset:
-The mains contactor releases,
-The unit waits for Generator Contactor Timer (P_509)
-The generator contactor is energized.