Why Smart UPS 1500 reported power failure?

[Anonymous user]

I have 3 Smart-UPS 1500 units, each with two servers connected to them. All 3 of these UPS units are connected to the same wall socket outlet. I just replaced one of these Smart-UPS 1500 units because it flaked out, and when I came in this morning I had an email from the APC Agent telling me that Saturday morning there was a Power Failure and then another saying Power Restored. In the logs it tells me there was a 2 second power outage. However, the other two APC agents, both of which are in the same wall socket, do not report a power outage on Saturday.

What would cause this? Everything seems to be running just fine right now, but I'm quite curious as to why it would report a power failure.

Thanks.

[BillP]

Hi:

Can you check the sensitivity settings of these UPS's and see if they differ at all? If there is any difference in this setting, one UPS may be a little bit more picky about the input power and may have seen a small amount of distortion on the power as dirty input power, and therefore went to battery. You can check this through PowerChute, a Network Management Card, or via the LED on the back (almost off for low, dim for medium, bright for high).

Additionally, if you do have a network management card or PowerChute, you may be able to check the data logs to see what you see for the input power at that time.

Thanks

Message was edited by: CMFR

[Anonymous user · Accepted solution]

The power settings for all the UPS units are the same:

High Transfer Voltage: 127
Low Transfer Voltage: 106
Sensitivity: High
Nominal Output Voltage: 120
Audible Warning: On Battery

These are all plugged into a surge suppressor connected wall socket. Is it possible dirty power can run through just one socket? Again, everything is working just fine, but I am curious. Thanks.