Trace PS2512 drop out problems [RE-wrenches]
Darryl Thayer
daryl_solar at yahoo.com
Tue Dec 16 15:06:10 PST 2003
Good luck with your problem. My only thought is you
are in a brownout situation and the transfer relay is
not fully pulling in. Do you hear a chatter from the
relay in the PS2512? I do not have any PS installed.
However I have many others in poor power situations
and do not have a problem. One home business system
has many grid problems, yet the outback has never
missed.
Daryl
--- "Richard Perez, Home Power magazine"
<richard.perez at homepower.com> wrote:
> Hello Wrenches
>
> Quoted below is a problem that an Home Power reader
> is having with
> his Trace PS2512. I am at a loss as to how to help
> him. Perhaps one
> of you Wrenches have solved this problem.
>
> Richard
> Home Power
>
> At 12:10 -0700 12/16/2003, Jim wrote:
> >We've been fighting with a problem involving a
> Trace PS2512
> >inverter. I thought perhaps you might offer some
> insight into what
> >is causing the problem and what (if anything) we
> can do about it.
> >
> >Our Moab, UT office experiences power interruptions
> lasting anywhere
> >from under a second to several hours. While
> relatively infrequent,
> >they can be quite costly to our programming effort.
> So, using my
> >experience at Ray Mesa Power & Light, we built a
> grid-tied
> >uninterruptible power supply for our software
> development
> >environment. Currently, the system relies entirely
> on the grid for
> >charging -- although we anticipate adding solar to
> it next year.
> >
> >The system (dubbed "MOAB", Mother Of All Backups --
> see attached
> >photo) consists of a Trace PS2512 and about 675 AH
> in a 12v battery.
> >It's sourced from a single 30 amp circuit breaker
> thru the inverter
> >and back to a secondary breaker panel with two
> smaller circuits: one
> >for our server room and one for the programming
> office. We calculate
> >the system will carry us for about 8 hours under
> worst case
> >conditions. All in all, it works as intended. When
> we pull the 30
> >amp breaker, the inverter kicks in with no visible
> interruption --
> >not even a screen flicker. Cut-over is seamless and
> never fails;
> >we've never had a computer go down in this
> situation.
> >
> >On the other hand, we have had several instances in
> which the office
> >fluorescent lights barely flicker, the inverter
> kicks in and 10 out
> >of 12 computers in the programming office instantly
> go dead. The two
> >computers that seem to ride through (both Macs) are
> always the same
> >two. Other nearly identical Macs on the same
> circuit leg as well as
> >all PC's always go down.
> >
> >We have called Xantrex tech support and although
> they admit to
> >having had the problem reported, they are unable to
> offer either an
> >explanation or a solution. They claim that there is
> no firmware
> >upgrade available (the unit is 18 months old) and
> don't know what to
> >suggest. I hinted that maybe they could furnish
> some means for us to
> >perform line monitoring to see what was actually
> triggering the
> >problem -- they didn't bite. We had already
> tightened up the grid
> >voltage limits in the hopes of catching the outage
> as early as
> >possible -- no help. Xantrex suggested since
> tightening the grid
> >voltage limits doesn't seem to work, maybe we
> should try widening
> >the limits. Since there's nothing to lose, we'll
> probably try it but
> >I'm hardly optimistic.
> >
> >We have discussed adding small consumer grade UPS's
> throughout the
> >office to provide short term ride-through but this
> defeats the
> >intent of our original $3000 investment. It just
> seems illogical to
> >us that the inverter is able to cut-over without so
> much as a
> >flicker when power is cut entirely but can't seem
> to handle short
> >blips.
> >
> >Have you heard of this problem? Do you have any
> idea what causes it
> >and if so, any suggestions for dealing with it?
>
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