whats the best pure sine wave 1200va ups ?
today i serached the market (DAV college road rawalpindi). and found one by HEC for 14500 . it claimed to be 1200va and the shopkeeper said that alot of call centers use this one as it doesnt causes humming sound in the communications..
few other models were deluxe and prolink ..
are they realy sine wave ? (1.2kva)
i want a ups/inverter that doesnt restarts the pc and causes minimum damage (in case of inverter )
also are there any graphs on this forum about the output of some commonly available upses ?
any validation of the claims made by these brands ?