Manual

4-5

power source connected is correct. The DC voltage will slowly

rise up (15 – 30sec.) until the designated voltage is reached, and

will keep the value anyhow. Now, the DC is already ready for the

inverter.

(d) Close the battery breaker - A fuse holder is employed in the battery to the

DC bus for

safety

purpose.

Now the batteries will take-over to

supply the DC bus if rectifier mains fail.

(e) Push inverter on switch – To on the inverter, the inverter on switch and the

control switch must be pressed simultaneously. The inverter will

start working and inverter output will be established in 4 sec. The

load will be automatically transferred to the inverter 3 sec. later.

Now the UPS comes again into normal operation now.