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neil in gemini space

beta pv frame - 2022-10-28

this frame was again built around the pv panel but using a larger CLS.

38 x 89 CLS treated.
ply triangle corner stiffeners.
wx resistant screw (wirex spax).
blocks screwed to the frame rear and pre-drilled for 8mm bolts (for supports)
no supports actually fitted (iterating the design).

the larger CLS was i felt too heavy. the frame was more substantial and stiffer but i had difficulty moving it on my own: a requirement is that i need to be able to reposition the frame myself without help.

the blocks for the 8mm bolts were i felt too small. despite countersinking and pre-drilling the holes i damaged the blocks driving in the screws.

i leaned this frame against the side of my cabin at a suitable winter tilt angle of 32/58 deg.

connection:

isolate the panels from the charge controller.
check the output polarity and voltage with a multi-meter (cables not clearly marked, manuals in chinglish).
cover the panels to reduce output. modern roofing felt will let enough light through to get a voltage reading.
connect the panels to the dc isolating switch.
recheck the polarity and voltage.
switch the dc isolator from off to on

this iteration runs all 4 of my panels (4 x 400w): more watts:-)

it is winter, the sun is hidden by cloud so not 1,600w: i saw over 900w when the sun was still a little hazed over.

2022-10-27: 2.83Kw generated.

sorry no pics.

onwards to RC1:-)

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neil.gemini@mingmengtou.org

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