Is this is a decent UPS ?

[Ricksta123]

Ive been looking at getting a bigger UPS for my system, i have two 12v 8.5ah batteries that are still in good condition, ive been looking at this Inverter/UPS Link , anybody have experience with these ? Its not very pricey and i like the fact that the batteries are external, getting them away from the heat of the components is a plus on my side. Any help would be appreciated. Thanks

 

[Ricksta123]

I guess it isnt worth it seeing as there is no data communication port to tell the computer to safely shutdown, that sucks... overall looks pretty decent..

 

[sajunky]

Looks fine, but I don't believe in sinusoidal output, as there is no distortion parameter in specs. It is probably a stepped sine wave output like most of cheap UPS's do as opposed to a "pure sine" wave which requires high frequency chopper.

These UPS's are fine for ordinary users, just be careful when connecting to more expensive PC power supply with built-in active power factor correction.

 

[Ricksta123]

Looks fine, but I don't believe in sinusoidal output, as there is no distortion parameter in specs. It is probably a stepped sine wave output like most of cheap UPS's do as opposed to a "pure sine" wave which requires high frequency chopper.

These UPS's are fine for ordinary users, just be careful when connecting to more expensive PC power supply with built-in active power factor correction.

Hey Junky thanx for the reply, so you rate this UPS doesnt really have pure sine wave at all ? My PSU has active power factor correction and ive read up sine wave is best for them. Not really sure what to do, probably need to look at something way more expensive.. ?

 

[sajunky]

Hey Junky thanx for the reply, so you rate this UPS doesnt really have pure sine wave at all ? My PSU has active power factor correction and ive read up sine wave is best for them. Not really sure what to do, probably need to look at something way more expensive.. ?

I am not Junky. Secondly I put my view based on other offering in line interactive UPS range. Most of line interactive UPS's give a stepped sine wave (very distorted). A reason is that most of the time UPS is not active, just monitor the power line. Pure sine wave conversion is more expensive, it is almost exclusive to online UPS's which do power conversion all the time.

In the industry there are these marketting terms:

- If they say 'sine' wave. it is a stepped sine

- If they say 'pure' sine wave, it suggests to be a suitable for active PFC power supplies, but you don't really know unless you try

- If they say 'pure' sine wave and harmonic distortion parameter is specified, you can assess how good power conversion is.

The last case gives you the most assurance, but there are specific cases when PSU switches off during transfering power from mains to the backup power. It is not really about transfer time delay (as some people suggest), rather how PSU reacts on temporary interruption of power.

 

[Ricksta123]

I am not Junky. Secondly I put my view based on other offering in line interactive UPS range. Most of line interactive UPS's give a stepped sine wave (very distorted). A reason is that most of the time UPS is not active, just monitor the power line. Pure sine wave conversion is more expensive, it is almost exclusive to online UPS's which do power conversion all the time.

In the industry there are these marketting terms:

- If they say 'sine' wave. it is a stepped sine

- If they say 'pure' sine wave, it suggests to be a suitable for active PFC power supplies, but you don't really know unless you try

- If they say 'pure' sine wave and harmonic distortion parameter is specified, you can assess how good power conversion is.


The last case gives you the most assurance, but there are specific cases when PSU switches off during transfering power from mains to the backup power. It is not really about transfer time delay (as some people suggest), rather how PSU reacts on temporary interruption of power.

Sorry about that sajunky, so you mean with the type of UPS i posted it only does conversion when its on battery backup ? Otherwise im pretty much getting power from the mains the whole time ? The website does state its a pure sine wave and suitable for computers etc well i hope computers with active pfc psu's , ill have to try and email them, im aware of specific cases of a psu switching off during transferring power from mains to backup power, doesnt this have to do with the hold up time ? This depends on the size of the capacitors used in the PSU, my PSU however i have looked at has a hold up time of around 16-17 ms, the genie ups which i posted has a transfer switch of 10ms for personal computers as stated on the website. More of my concern is towards the actual UPS giving a buzzing on my PSU and causing it to shorten its lifespan, although as its stated as pure sine wave, it might work okay i wouldnt know.

Appreciate the help so far man.