Load Transfer Modes; Transfer With Interruption - Datakom D-500 MK2 User Manual

D-500 MK2 User Manual

29. LOAD TRANSFER MODES

The unit offers 3 ways of transferring the load from genset to mains and vice versa:

-transfer with interruption,

-no break transfer, (from genset to mains)
-soft transfer
29.1. 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 during the transfer. Note that the program parameters Mains Contactor Timer
and Genset Contactor Timer 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 an accidental
phase to phase short circuit.
Transfer from genset (or busbar) to mains:
-The generator (or busbar) contactor releases,
-The unit waits for Mains Contactor Timer
-The mains contactor is energized.
Transfer from mains to genset (or busbar):
-The mains contactor releases,
-The unit waits for Generator Contactor Timer
-The generator (or busbar) contactor is energized.
- 160 -
Firmware V-6.3