@gjacobse said in Eaton Rack Mount 5P: power on issue:
@NHCSAdmin said in Eaton Rack Mount 5P: power on issue:
@gjacobse Is the power input set to the correct voltage? We ran into something similar with the 9p line where the power from the street was 208 but of course the generator was at 240. With the UPS set to 208 and the batteries not at 100% it would not turn on while the UPS was running. We found it out the hardway when the power went on and the generator did not kick on and the batteries drained down. Then the generator repair tech got the generator on but it didnt matter since we couldnt turn on the unit since it was set to 208. Confirmed it with Eaton and all.
That's a good call - but sadly no.
I pulled it out of the rack - thankful for the use of a lift as pulling it down from twelve-fifteen feet up on a step-ladder would have been no joy.
Walked it across the warehouse and plugged it back in and noticed that the reported state of charge on the battery was 88%.
Wait, what now? you lost twelve percent, powered off and no load while I walked across the building? That can't be right.
Unit's going back RMA as failed..
Lead acid batteries (VRLA) can't be left uncharged for long periods of time. It cause sulphation on the cells and destroys the battery. Recommended storage time without charging is 6 months at room temperature.
So having an UPS sitting on a shelf is a bad idea. It should be hooked up at least every 6 month.
So this has nothing to do with Eaton. It's just how the battery chemistry works.
If you had the UPS sitting for a long time without installing it, this could be a factor.
