In the era of APFC PSUs all UPS from a big brand must be Sine wave. But I expect even basic model from brand like APC to have better "Transfer time". But they are less reputed than APC, so I will stick with APC. Many other brands are offering Transfer time in 4-8ms in this price range. So, again, it is always better for UPS transfer time to be lower. Less the transfer time, less the capacitor is discharged and less is the Inrush current. This current is Inrush current and can cause UPS to shutdown because of overload. This does not happen for me.Īlso during this delay of "Transfer time" capacitors in PSU gets discharged, causing a larger than normal current to charge capacitors when power is resumed after the tiny delay. If PSUs capaitor are unable to handle "Transfer time", PC will restart in most cases. So it is always better for UPS transfer time to be lower. Even branded PSUs of huge brands fall short on this parameter by a little bit. So Max of 12ms from this UPS should be acceptable. PSUs have some energy in their capacitors. This Delay is "Transfer time." PSUs are supposed to handle this "Transfer time" to extent of about 15ms. There is a Tiny time delay in switching on battery power of UPS. Now for those who don't know about "Transfer Time", most of the UPS in market do not provide power backup upon Mains electricity failure "INSTANTLY". Even APC itself suggests Sine-wave UPS for APFC PSUs, and if you have a decent PC bought in last 10 years it most probably has APFC PSU. Today in era of APFC PSUs, Sine-wave UPS are preferred, but sine-wave UPS are basically not available in India or are priced too highly. Anything above it from APC costs considerably more both in initial purchase and later in Battery replacement costs. Now let me explain to the extent of my understanding why it sometimes fails in rare circumstances. I will explain it in a bit more detail ahead.Īnyway I will not return this unit because this is the best I can get for this amount of money from a big brand. ![]() It is momentary overload when electricity fails. As a matter of fact I can Cold Start my UPS when Mains electricity is OFF and I can load my PC maximally (both GPU and CPU) for a few minutes on battery backup without problem.So too much load is not the problem. And adding maximum losses from 80PLUS PSU, it still does not ask for more than 540 watts. Now before you guys start telling me I should go for a larger UPS, the recommended PSU for my combo of CPU and GPU (ryzen3500 and GTX 1060) is less than 450 watts. ![]() ![]() It fails with UPS being "overloaded" when electricity fails. This UPS does fail my PC sometimes when load on my GPU and CPU is high and Mains electricity fails again and again within seconds.That is a rare occurrence. I have this UPS because of the way the power management is setup where I live but I would always recommend investing in a Sinewave Inverter. I don’t need it for power backup but testing indicates that this can support a ps5 and a gaming monitor for 15-20 minutes (on battery saver mode). I mainly wanted to protect my ps5 and gaming monitor from the power surges that may happen in the intermittent stages of power going out and generators kicking in and then the main power coming back all in the span of a single minute. Where I live if there’s a powercut the generators take 10-15 seconds to kick in. Now to speak about my experience: I am happy because it works as intended. You can turn off the switch on the UPS when you are not using your connected peripherals but the outlet switch has to stay on always. Once this is connected to a power outlet that power outlet has to stay ON always because of the way the battery works: it trickle charging continuously topping up and discharging through cycles.
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