โNov-07-2014 02:41 PM
โNov-08-2014 03:40 PM
โNov-08-2014 02:28 PM
Porsche or Country Coach!
If there's a WILL, I want to be in it!
โNov-08-2014 02:10 PM
โNov-08-2014 01:09 PM
โNov-08-2014 08:40 AM
JiminDenver wrote:
AND just because you look at the output of a MPPT controller and see x amps, don't think that that is the max for the system. The controller also tries to determine what is the best way to charge the battery. Left alone the Eco-w's will take a slower, gentler rate but if I hit the system with running the coffee pot early on, I'll see a 2-3 amp increase and it will stay that way until the you hit around 14v or so. Then they go into boost until you reach the set voltage before dropping to float.
โNov-08-2014 08:30 AM
โNov-08-2014 08:04 AM
โNov-08-2014 07:42 AM
CA Traveler wrote:
MPPT has no way to detect panel wattage. Power is the product of volts and amps and the controller searches for the point on the IR curve where it can maximize that product and convert the power to battery voltage and amps. That's how you can get 40A to charge the 12V batteries from 8A panels for example.
Voc is not a factor since the panel is producing amps so it's not operating open circuit and the panel voltage will be less than Voc. Voc or any input voltage to the controller is a factor due to electronic limitations.
At 60A the MS-MPPT-60 will start derating at 140V input down to 0A at 150V. 150V is the stated maximum voltage.
โNov-08-2014 07:25 AM
โNov-08-2014 07:18 AM
โNov-08-2014 07:17 AM
โNov-08-2014 06:54 AM
JiminDenver wrote:
When in absorb/float the controllers split the charging, each dropping equally until as I said, it's gets well into float. I'll have it all up this weekend so Ill pay attention to it more.
โNov-08-2014 06:53 AM
โNov-08-2014 06:30 AM
JiminDenver wrote:Are the panels going to be connected in series? The controller just sees the voltage and amps.
What attracts me to the 60 is that as I understand it is that it can track multiple arrays. That means I could run the two 245w monos AND the 230w poly and not worry about confusing the controller with different voltages. Should I have the wrong idea about this, someone tell me now. Otherwise a 45 for the monos and a Eco-W for the poly will do just fine.