[wellylug] Dynamix UPS

Jasper Bryant-Greene jasper at unleash.co.nz
Sat Jan 12 13:29:12 NZDT 2008

Hi there,

I have the 1000VA version, which was $130 or so at Global PC. It is also
apparently a line interactive UPS.

I've power-off tested it about 10 times, and it has worked perfectly
each time. Haven't tested output power quality, but it runs my server,
Linksys WRT300N, Linksys PAP2T, cordless telephone and Dynalink ADSL
modem just fine.

I couldn't get it to work with NUT, but the software on the included CD
is very simple and works well, so I've just installed that under /opt
with a custom init script (unsurprisingly, they didn't include
Gentoo-compatible init scripts).

If I pull the power out, it runs "shutdown" with a time of 9 minutes
(tested run-time of the UPS with the equipment I have on it is 13
minutes). If I then replace the power, it cancels the shutdown.


On Sat, 2008-01-12 at 13:22 +1300, David Antliff wrote:
> Hi,
> Recently picked up a Dynamix 1700 UPS (the black one).
> This isn't really a linux question (although if anyone is interested,
> this UPS has a serial interface and supposedly works with Network UPS
> Tools, nut-2.2.1, although I'm yet to set this up properly), but I've
> found so little user opinion on the net about this, so I'm wondering
> if anyone else has tried these UPSs? (Dynamix seems to be a NZ-only
> brandname).
> Mine has two issues.
> 1. when it switches to battery, the 'quality' of the power emitted
> seems quite poor. It's enough to keep PC gear running but I tried an
> incandescent table lamp and it flickers like crazy (and not regularly
> either, seemingly randomly). But this isn't such a big deal.
> 2. what IS a big deal is that of the six or so times I've done a
> power-off test, it failed to switch over once! Not only did all
> powered-on equipment immediately turn off, the UPS appeared to turn
> off too! The battery was fully charged.
> Supposedly this model is 'line interactive' but I was unable to find
> any supporting documentation other than the fact it's listed on the
> Dynamix website under the 'line interactive' category. I don't have a
> safe way of lowering the input voltage to test this, unfortunately. Is
> there a way one can externally differentiate between a standby and
> line-interactive UPS?
> My other UPS is a 650VA APC, never had any issues with it (except it's
> insufficient to supply the 850W PSU on my workstation). Unfortunately
> a 1000+ VA APC UPS is out of my price range. The Dynamix seemed like a
> nice choice at just over $300, but now I'm contemplating returning it.
> Any thoughts?
> -- 
> David.

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