Our smart UPS shut down output completely for no obvious reason recently. Even if this was caused by external reasons (e.g. voltage drop) I do not see why the UPS switched off the power output instead off going on battery. The UPS is pretty new, battery is full and load is around 30%. Any idea why this could happen?
Here is a log extract:
I am sorry, I have problems parsing your message. Do you mean that for some models it is normal?
I see now. In our case there was a self-test 2 days before without any issues and there are log entries for this shutdown, but they just say "hey, everything is shutting down".
Well, the log events right before that are self-test from 2 days before:
This kind of defeats the purpose of having a UPS.
There was a power throw.
I seriously doubt it. We had power issues in the last few months and they a) were properly logged, b) led to disabling input, not output and c) switched UPS to battery without interrupting the power supply.
In this case the UPS disabled the output without switching to the battery first. This is the opposite of what Uninterruptible Power Supply (UPS for short) should do. The fact that power supply stopped for a few seconds is logged on all the devices connected to this UPS.
OPS did not fix it in the logs but honestly reflected the disconnection of group sockets according to the internal firmware algorithm and possibly the settings (delays) that you yourself created.
Again, why in the world would a UPS disconnect output sockets in case of input power problem instead of switching to the battery? The logs from the UPS itself, as well as from the connected devices clearly indicate that the UPS first disconnected the power output, then switched to the battery, and only after all of that re-enabled the output.
After the restoration of power, UPS, it says that it does not feed on batteries anymore.But the event was that!Now, if it’s not critical to load, try provoking the launch of selftest through the MNC.If not CRITICAL for the load.I'm trying to understand my problem (which I outlined) and yours.I fight with SMT1500RMI2U.
As I already mentioned, our UPS works just fine during selftest and it is a different model. Your problem is irrelevant here.
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