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backup power for home during load shedding


kitkat
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Hi Guys

I am thinking of getting a 2KVA UPS. How much uptime will it give me? I have the following devices.

-6 x W6 Unifi lite - 12W max
- 2 x Netgear Switches - 6W
-1 x Huawei router - not sure, maybe 12W

What other unit can I get which can help me out for about 2 hrs?


Thanks
Kitty

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That 2kVA unit will roughly get you to 1200 Watts, What is the rated standby time for this unit and do they give the wattage for this time?

The lot you mentioned will draw about 100-130 Watts. If we work with 100W draw, that should get you to just about 1:10 min only I recon. BUT, it depends on the time or capacity that UPS specifies, if they do that even.

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Looks like you are looking for backup for you router type devices which all use a DC power input

There are also some Router UPS's that provide DC power to the router, pretty good value for money and a lot more efficient that going ac-dc-ac-dc 

Also, most have lithium batteries in them so will last much longer than a lead acid UPS. 

https://www.takealot.com/gizzu-8800mah-mini-dc-poe-ups-black/PLID69282110

https://www.geewiz.co.za/ups/157360-mini-dc-ups-8800mah-backup-battery-power-bank-supply-3256wh-12v-9v-usb-and-poe-router-cctv-wifi-backup-with-splitter-cable.html

https://www.takealot.com/mini-portable-ups-power-back-up-with-poe-8800-mah-lithium-batter/PLID73151975 

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21 hours ago, kitkat said:

Hi Guys

I am thinking of getting a 2KVA UPS. How much uptime will it give me? I have the following devices.

-6 x W6 Unifi lite - 12W max
- 2 x Netgear Switches - 6W
-1 x Huawei router - not sure, maybe 12W

What other unit can I get which can help me out for about 2 hrs?


Thanks
Kitty

Is that ALL you need? What if the load shed comes after sun down? Then you don't mind the lights being out as long as the network gear stays up?

Check your calculations, then consult with a reputable, specialist UPS company, don't go to Builder's Warehouse or Game and buy off the shelf bits and pieces. You don't say where you live so it's hard to recommend, but there will be such companies in most major towns. 

Point is, this is their business and they know the product and they know about things like battery life, whether you need pure sine wave output or not, things that we don't think about because we don't even know they're things. You can go to them and say I need to back up this for 2 hours (only it won't be 2, think of 2.5 and then add a bit on) and what will do that for me? 

Edited by Bobster
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