Misleading fault indications [RE-wrenches]
Matt Tritt
solarone at charter.net
Mon Mar 3 20:39:24 PST 2008
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Well, because they actually /make /what others sell, they know the
functionality of their products better than anyone else and without them
we would be just making guesses about a lot of different things that we
actually don't understand at the same depth?
Consider the contributions of J. Berdner, for instance.
Matt T
Mark Frye wrote:
>Why do we allow manufactures to be on this listserve?
>
>If they are only going pontificate on the alleged virtues of their product,
>and avoid answering direct questions about specific features/functioning of
>their products, I personally don't see a lot of benefit to their presence.
>
>(Some may say the same of mine but....)
>
>Mark Frye
>Berkeley Solar Electric Systems
>271 Vistamont Dr
>Grass Valley CA 95945
>(530) 401-8024
>www.berkeleysolar.com
>
>-----Original Message-----
>From: Mark Frye [mailto:markf at berkeleysolar.com]
>Sent: Friday, February 29, 2008 6:15 PM
>To: RE-wrenches at topica.com
>Subject: RE: Misleading fault indications [RE-wrenches]
>
>
>So you are saying that Christopher is incorrect in saying,"... The PV array
>will still continue to produce power...", but correct in saying, "...the
>controller does not indicate a fault has occurred..."?
>
>Mark Frye
>Berkeley Solar Electric Systems
>271 Vistamont Dr
>Grass Valley CA 95945
>(530) 401-8024
>www.berkeleysolar.com
>
>
>-----Original Message-----
>From: Mark Edmunds [mailto:mark.edmunds at xantrex.com]
>Sent: Friday, February 29, 2008 6:05 PM
>To: RE-wrenches at topica.com
>Subject: RE: Misleading fault indications [RE-wrenches]
>
>
>Hi Mark,
>
>For most faults there will be an indication, but like on a lot of the
>Grid Tie Inverters in the unlikely case of a very low impedance fault
>connection directly from the PV negative to ground back to the XW charge
>controller chassis the fuse could blow, protecting against the fault but
>not showing an indication. We have never seen this type of fault before,
>but the fuse certainly would protect against any continued fault current
>flowing.
>
>Mark
>
>
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