Compensating High Input - Acceptable Levels

[jwood_ok]

Hey all, hopefully this is the right location for this - if not, please feel free to move.

I have a fleet of mostly Smart UPS 1500 XLM and Smart UPS X 1500 at various locations.  A couple of them frequently get warnings about compensating for high voltage.  when I look at them, they tend to be something like 125.6.  I contacted our facilities people, and they said that the utility company won't look at anything that is within 7%.

So my questions are - is this just kind of an acceptable thing? Also, I've seen references to sensitivity levels, but haven't come across the locations for that - if a location is known to have some fluctuations, do I just need to make adjustments on the sensitivity so that it ignores them?  

Thanks

[Teken · Accepted solution]

At a high level the systems are operating as intended and that is to buck the input voltage to an acceptable level for the connected load(s). There is nothing for you to do besides document the variability of the input voltage at the facility.

If you really want to change how the system behaves you need to confirm and validate all connected loads are fine with seeing a higher input voltage. The vast majority of equipment are designed to operate with a wide input voltage and dual frequency.

This is something you must check to insure this is the case . . . ☝️

If you wish to change the Upper & Lower Transfer Voltage this can be found by going to Configuration -> Power Settings. The Sensitivity is found in the same menu and the default is Normal, Reduced, Low. The phrases will be different on other models / firmware but the intent is the same.

Just to be clear in case you don't know what the two do or intended for. The transfer voltage impacts when the system will go into AVR mode. The Sensitivity defines when the system will invert and go into Battery Only Mode. Obviously, going into Battery Only mode provides the cleanest power but sacrifices battery service life.

AVR simply bucks / boosts the input voltage and inverts the same to the outputs for a more stable voltage.

Questions Ask . . . 👍  

[jwood_ok]

Thank you for that insight.