Trouble with Daker DK 3000 UPS

[CidiRome]

Re: Trouble with Daker DK 3000 UPS

Hi.

I will add pics on Monday.

The batteries were replaced a few months ago and I also believe that this UPS is able to start without them.

Normally I'm making tests without the batteries connected and it notifies the situation through the battery error led that doesn't lit when the batteries are connected.

Cheers.

[kc8adu]

Re: Trouble with Daker DK 3000 UPS

need pics.
also verify batteries are ok and charged.
many ups wont work at all with dead or bad batteries.

[CidiRome]

Hi.

I'm turning my head around a Daker (Legrand) DK 3000 UPS.

This is an online double conversion UPS that seems quite good.

When powered on the "!" led lits and there is no power on the output sockets.

With the software, the error I get is "no output" (can't remember the exact words, but that is what the error means).

While testing I noticed that the BUS voltages (positive and negative) go up for a moment to about 450V each (close to 1kV between BUS- and BUS+ that sometimes the Multi-meter overloads) and then start falling down slowly (CAPS discharging).

I couldn't found any short circuits and the Big Relay never seems to close (I tested it offline and it make a big noise that would be very audible), nor the one small relay in the main board. From what I can tell only the output relays seems to switch, and those I was able to switch from the software.

It also doesn't have power output with a cold start from batteries.

Any ideas?

Cheers.