Citeren Vitor Choi Feitosa <[email protected]>:
You're right. Brazil's voltage standard is 110v in some cities, 220v in most and always 60hz. About the ups, it has a big red label stating "use only on 220-240V". I really liked your input, so don't get me wrong here: as this product was bought (in fact, given to me) in Brazil I'll just assume Eaton is selling an ups that's appropriate for use here.
That depends. The fact that a device (in this case, your UPS) is sold in Brazil, doesn't mean that the manufacturer intended that this particular model is on the market there.
I would expect that either the nominal voltage of a UPS would match the nominal mains voltage *or* that it has a provision to select a nominal voltage. In many cases, there will be dip switches on the back of the unit or it can switch to a different nominal voltage under software control (via a command, but I'm pretty sure the Megatec protocol doesn't support that).
In your case, the UPS will attempt to keep the output as close as possible to 230V. As can be seen in your logs, it boosted an input voltage of 209.5V to 247.7V. Would this have been in 230V mains, boosting would reduce the error from -8.9% to +7.7% (which would improve things). But for 220V mains, boosting increases the error from -4.8% to +12.6% (going from marginally low to fairly high).
Looking at the above figures, I doubt that Eaton intended that this unit is sold in Brazil. Sadly, some vendors don't care about that and will happily sell units that were designed and manufactured for other regions in the world.
Best regards, Arjen -- Please keep list traffic on the list _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
