SunTie Inverters [RE-wrenches]

Bob Maynard, Energy Outfitters bob at energyoutfitters.com
Fri Jan 26 16:54:17 PST 2001


Steve,
I'm in the same boat as you, not enough info back from the field yet, but I can
say that there must be a good reason Siemens has chosen AES for the Earth Safe
Systems.  I will be installing a SunTie at my residence in about a month and a
half but thats still not soon enough for those of us designing systems and
specifying products today.  I'll post any feedback we get as we get it.
Regards,
Bob Maynard



Steve Bell wrote:

> Hi Wrenches,
>
>    I'm seeking any experiences and/or thoughts about operational problems
> with the Trace Sun Tie Inverter. One of our (SunWize) dealers has a ST2500
> installed in a school as part of a teaching program (located many miles from
> his shop). Whenever the array output climbs above 700 watts, the unit cycles
> off. He replaced the ST with a share unit he had at his shop. This new unit
> cutouts above 650 watts. In a telephone conversation with the Trace techies,
> he was told that the SunTie will tend to cutout several times (or more)
> during the day. They said it has something to do with recalibrating or
> readjusting itself. They said that the unit should cycle back up after the
> adjustment period.
>
>     Also , apparently the cooling fan comes on whenever the wattage climbs
> above about 200 watts. Trace said this was by design.
>
>    Do any of you have any similar experiences or any thoughts or insights?
> It seems like the Sun Tie should be a simple Plug-n-Play install with no
> nuisance cutouts.  And why does the fan need to operate if the unit is not
> warm or operating at the high end of it's output?
>
> This is a fairly new family of inverters and I have no hands-on experience
> with them. Does anyone have any thoughts or guidance?
>
> Thanks,
>
> Steve Bell
> Technical Support
> SunWize Technologies
> sebpv at stelle.net
>
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 michael.welch at homepower.com

____________________________________________________________
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