Need some specs on these, and some advice...

cwwilson721 · 07-22-14, 07:22 PM

ARRGH!!

The stuff on the interweb thingy gets worse and worse...

OK..Here's the story:

A friend got ahold of 34 Solarex SX110 panels and the roof mount system for them real cheap (like <$25 per panel). He owns quite a few industrial type storage units, and wants to use the panels for 12v security lighting inside the buildings (approx 30-40w per unit).

So here's the thing:

What are the specs on these panels? They are 12v panels is about all I know. What are the rest of the specs? (Wattage, currents/etc).

After that, I'll probably need help on battery sizing, charge controllers/etc.

Any help?

pinballlooking · 07-22-14, 07:52 PM

Is this the module you got?
http://www.solarcellsales.com/techinfo/docs/MSX-110.PDF

cwwilson721 · 07-22-14, 08:20 PM

No. Not the MSX-110. The SX-110. The MSX are higher voltage.

cwwilson721 · 07-22-14, 08:30 PM

These put out about 16.2vdc loaded

cwwilson721 · 07-22-14, 08:36 PM

Looks like they are the same as the BP SX-110S panels. (BP/Solarex combined, if I remember correctly)
So maybe it's this?

(Can't post links, so: www this

posharp.(c.o.m.)/bp-sx110s-solar-panel-from-bp-solar_p1374303832d.aspx]BP SX110S 110 Watt Solar Panel from BP Solar

where2 · 07-22-14, 08:47 PM

If the interweb search proves fruitless, usually PV panels (even my little Chinese 12V panels) have stickers on the back of the panels that tell you all the fun specifications you want to know.

Nice score. I should have grabbed all the last PV system I saw offered for sale used... It was a grid tie 7.5kW system.

cwwilson721 · 07-22-14, 08:50 PM

No stickers. All that is on it is a sticker on the junction box(es) saying "less than 24v" and the model# plate on the frames

stevehull · 07-22-14, 10:45 PM

The output in watts is not hard to figure out. Put one of the panels in full sun and measure the DC current between the two output leads. You already know the voltage (16-17 v).

watts = volts x amps

If you get 10 amps, then they are ~160 to 170 watts.

Or maybe you already knew this . . . . (if so, sorry).

Steve

cwwilson721 · 07-22-14, 11:14 PM

iirc, they were approx 6.5a (rather early in the AM), so they seem to be 110w panels, which makes sense for the model#.

That seems to jibe with the link I posted, so seems those specs maybe close for calculating stuffs...

My thoughts (using base things and the numbers on that sheet), a 24hr 5x7watt load, 2x125AH 12v batteries, a 20A or 30A charge controller, and 3 of those panels should work well enough.

Any comments/thoughts?

07-22-14, 07:22 PM	#1
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	Need some specs on these, and some advice... ARRGH!! The stuff on the interweb thingy gets worse and worse... OK..Here's the story: A friend got ahold of 34 Solarex SX110 panels and the roof mount system for them real cheap (like <$25 per panel). He owns quite a few industrial type storage units, and wants to use the panels for 12v security lighting inside the buildings (approx 30-40w per unit). So here's the thing: What are the specs on these panels? They are 12v panels is about all I know. What are the rest of the specs? (Wattage, currents/etc). After that, I'll probably need help on battery sizing, charge controllers/etc. Any help? Last edited by cwwilson721; 07-22-14 at 11:16 PM..

07-22-14, 08:30 PM	#4
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	These put out about 16.2vdc loaded Last edited by cwwilson721; 07-22-14 at 08:33 PM..

07-22-14, 10:45 PM	#8
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 826 Thanks: 241 Thanked 165 Times in 123 Posts	The output in watts is not hard to figure out. Put one of the panels in full sun and measure the DC current between the two output leads. You already know the voltage (16-17 v). watts = volts x amps If you get 10 amps, then they are ~160 to 170 watts. Or maybe you already knew this . . . . (if so, sorry). Steve __________________ consulting on geothermal heating/cooling & rational energy use since 1990

07-22-14, 11:14 PM	#9
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	iirc, they were approx 6.5a (rather early in the AM), so they seem to be 110w panels, which makes sense for the model#. That seems to jibe with the link I posted, so seems those specs maybe close for calculating stuffs... My thoughts (using base things and the numbers on that sheet), a 24hr 5x7watt load, 2x125AH 12v batteries, a 20A or 30A charge controller, and 3 of those panels should work well enough. Any comments/thoughts? Last edited by cwwilson721; 07-22-14 at 11:16 PM..

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07-22-14, 07:52 PM	#2
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	Is this the module you got? http://www.solarcellsales.com/techinfo/docs/MSX-110.PDF

07-22-14, 08:20 PM	#3
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	No. Not the MSX-110. The SX-110. The MSX are higher voltage.

07-22-14, 08:36 PM	#5
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	Looks like they are the same as the BP SX-110S panels. (BP/Solarex combined, if I remember correctly) So maybe it's this? (Can't post links, so: www this posharp.(c.o.m.)/bp-sx110s-solar-panel-from-bp-solar_p1374303832d.aspx]BP SX110S 110 Watt Solar Panel from BP Solar

07-22-14, 08:47 PM	#6
where2 DIY Geek Join Date: Apr 2013 Location: Sunny Florida Posts: 401 Thanks: 74 Thanked 83 Times in 73 Posts	If the interweb search proves fruitless, usually PV panels (even my little Chinese 12V panels) have stickers on the back of the panels that tell you all the fun specifications you want to know. Nice score. I should have grabbed all the last PV system I saw offered for sale used... It was a grid tie 7.5kW system.

07-22-14, 08:50 PM	#7
cwwilson721 Lurking Renovator Join Date: Mar 2014 Location: Alabama Posts: 10 Thanks: 0 Thanked 1 Time in 1 Post	No stickers. All that is on it is a sticker on the junction box(es) saying "less than 24v" and the model# plate on the frames