PV Inverters module strings [RE-wrenches]

[William Miller]

Kent:

Thanks for your reply.  I understand you work for Trace Technologies, the
designer and builder of the PV series inverters.  If you don't have
specific application knowledge, is there someone in your company who does?

I need to know how many SR100 panels to use with a PV5 and a PV10 for a
given climate.  Please correct me if this is not an appropriate question to
ask of a manufacturer.

I would assume this type of question is fundamental to the support of a
product you manufacture and I would be disappointed if Trace Technology
could not give me very precise data to allow me to purchase and use a
product in their line.


Thanks,

William Miller



At 11:57 AM 3/28/01 -0800, you wrote:
>William, sorry to take so long to get back to you. I am inundated right now.
>Unfortunately, I rarely get involved in the PV array sizing calculations.
>The only advice I can give you is to make sure the peak power voltage stays
>between 330 to 600. NEC drives most of the voltage window constraints,
>however the manufacturer temperature deratings for the specific PV model
>will also impact the calculations. A side note, the inverter will not power
>track below the minimum allowable DC level. So if your PPTV is lower than
>minimum, the power tracker will back off and continue power production at a
>less efficient point on your array curve. Right now the minimum DC operating
>voltage is around 328. We are putting some new software through UL which
>will allow the minimum bus voltage to be a function of the AC line voltage,
>allowing for operation below 300Vdc. It will be a few months before this is
>available.
>
>Please contact me if you have any further questions.
>
>Kent Sheldon
>Product Manager - Photovoltaic Engineering Group
>Xantrex/Trace Technologies Inc.
>925 245 5463/925 245 1022 Fax
>kentsheldon at tracetec.com  www.xantrex.com
>


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William Miller
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email: wrmiller at slonet.org
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