With 4800 watts and HV input, it seems to me that a simple battery backup can be formed from an existing PV grid tie system. Block diagram attached. Where can one find a 600 volt rated DC transfer switch?Larry
Original Message
Subject: Re: [RE-wrenches] High Voltage MPPT units
Drake;
I had trouble finding that reference, then I found it in the back in
Annex B. I think that would apply to the ampacity of the DC line, but
then for the 12.47 Kv line, I believe you would need Figure 310.60 which
then references Tables 310.60 C (77) thru Table 310.60 c (86)
Without
Siemens makes a line that are UL listed.
Their VBII series like HNF361PV – 30A
-Glenn
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of
la...@starlightsolar.com
Sent: Sunday, November 06, 2011 2:45 PM
To: RE-wrenches
Subject:
Larry. I have used a 600 VAC transfer switch from Sq. D I never had needed for
it to be DC; however the insides are similar to the 600 VAC-VDC, it snaps open
and snaps closed in both positions. I will ask my SQ D supplier, he is usually
good.
BTW Nice idea, thanks.
DT
David,Sorry, a bit slow on the reply. A few years ago I installed about 15kW
of the GE Geko modules which are similar to these ones. I believe the Geko's
were 55W and 65W.
I worked closely with the roofer who was installing the cement roof tiles. He
would lay out the bottom row or two of
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