UPS 1500 - NMC constantly reporting low voltage

Anonymous user · ‎2021-06-30

Don't know if I should be concerned about this at the moment or not.
New construction is currently going on in other parts of a office/warehouse. In our warehouse we have a Smart-UPS 1500 set up in it's rack.
The NMC is constantly reporting low voltage error, and an occational site wiring fault error.

01/19/2012 13:49:28 UPS: No longer compensating for a low input voltage.
01/19/2012 13:49:26 UPS: Compensating for a low input voltage.
01/19/2012 13:46:13 UPS: No longer compensating for a low input voltage.
01/19/2012 13:46:13 UPS: A site wiring fault no longer exists.
01/19/2012 13:46:11 UPS: Compensating for a low input voltage.

The electrian plugged into the jack and it was reading 120, the data log also shows a vmax of 120. Should I be worried about the Vmin? Should I just adjust it lower?

BillP · ‎2021-06-30

well, the UPS is not designed to be in 24/7 boost mode but more importantly, if the UPS goes to battery and deplete's its battery, it's going to have a problem starting up in the lower voltage environment. essentially, when boost comes on often like this, i'd start finding out how long its going to get it fixed since its an alarm that generally indicates a power issue needing attention - which you already are looking into it and aware of the cause.

See Answer In Context

BillP · ‎2021-06-30

well, the UPS is not designed to be in 24/7 boost mode but more importantly, if the UPS goes to battery and deplete's its battery, it's going to have a problem starting up in the lower voltage environment. essentially, when boost comes on often like this, i'd start finding out how long its going to get it fixed since its an alarm that generally indicates a power issue needing attention - which you already are looking into it and aware of the cause.