All batteries were replaced with new, but its still not charging. In the display it was showing "Utility Power Outage Run Time 24 h 00 m". Three phase supply was checked and all phase voltage are ok (all 400 VAC). Measured voltage from breaker and power supply terminals of UPS are (all 400 VAC).
Did anybody have an idea what is the problem? Or maybe card not sensing the supply voltage.
If the UPS is not picking up the input voltage it may be that either the input wiring or the bypass and phase jumpers need to be reviewed. With a 3 phase input, depending if you have a separate (secondary) feed for your bypass or not - see pg. 17 of the user manual for more details:
1. 3Ph single feed: leave bypass jumper in place, remove phase jumper
2. 3Ph dual feed: remove both bypass and phase jumpers
Any chance you can include a photo showing the input wiring tray as well as the jumper configuration?
Thanks for the reply. 3 Phase Supply are ok. Connections are also ok. Please see attached picture.
I can see 4 wires (3Ph + N) in your wiring terminal - ground seems to be missing. I recommend wiring / connecting the ground too, as this UPS requires either a 3 wire 1Ph+N+G or 5 wire 3Ph+N+G wiring.
I also recommend sizing the neutral wire gauge appropriately, it is significantly smaller gauge than the phase wires.
Thank you very much. Now the UPS is functional. We forgot to include the neutral.
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