Panels Stats

drraptor

A friend bought this. do the stats look Ok ? I mean the ISC and VOc etc etc

BB.

Re: Panels Stats

I guess you were trying to post a document/picture? I don't see anything at the moment.

-Bill

drraptor

Re: Panels Stats

Attachment not found.
hopefully it is working now.

westbranch

Re: Panels Stats

we will need to know what other equipment will be used with these panels and what the application is going to be :cool:

BB.

Re: Panels Stats

These are "12 volt" panels (Vmp~17.5 to 18.6 volts or so)--And perfect for charging 12/24/48 volts batteries (1, 2, or 4 panels in series). Can be used with PWM (native voltage) or with MPPT controller (higher voltage for long wire runs from Array to charge controller+batteries).

Normally, I suggest:

1. Measure/estimate loads (Watts average and peak, Watt*Hours per day, etc.). Working Voltage (12 VDC, 120 VAC, etc.).
2. Estimate Battery Capacity (AH and Bank voltage).
3. Size Solar array
4. Size backup genset (if needed)
5. Start selecting components, several paper designs to compare costs+fuctionality
6. Spend money

Mixing/matching panels can be a big pain in the behind. In some cases, you have to have two or more MPPT charge controllers to build "optimum" arrays with existing+new panels.

-Bill

drraptor

Re: Panels Stats

He is using

2x 150 (same panel as shown in Pic)
a 20A 150V( VOC) MPPT charger

2x 120AH batteries connected in Series.

Cariboocoot

Re: Panels Stats

Those specs are not sensible: Imp is 10.06 but Isc is 9.54? That is probably backwards.
Multiple either by the supposed Vmp of 17.63 and you get panel power well above the rated 150 Watts (either 168 or 177) even with the +/-3% tolerance.

I would not trust the panel's output to be as described. Test it for at least Isc and Voc first and see what numbers you get.

drraptor

Re: Panels Stats

Attachment not found.


Front of the Panel . 36 Cell Panel.
I have asked him to measure VOC and ISC, finger crossed.