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:-)

---

return to gemini.mingmengtou.org index page.

---

neil.gemini@mingmengtou.org

content licensed CC-BY-SA 4.0 unless stated.

creative commons licence.