Using the exported data

Started by offgridQLD, February 06, 2013, 03:21:40 AM

Previous topic - Next topic

offgridQLD

#15
We may not be on the same page but...

I understand that the input amp number show will most of the time be lower than the output amp number due to the fact the input voltage is usualy higher (amps x volts = watts)

So I can see for a given wattage if the volts are higher the amps will be naturally lower.

The issue is when you do the math (amps x volts) for the input voltage and input amps shown you obtain a input wattage number. At the same time you take the output amps & output volt numbers and multiply them to obtain a wattage number.  You end up with a big difference between input and output watts for the same sample time I see up to 30% difference

Kurt
Off grid system: 48v 16x400ah Calb lithium, Pv array one  NE facing  24 x 165w 3960w, Array two NW facing 21 x 200w 4200w total PV 8200w. Two x Classic 150,  Selectronic PS1 6000w inverter charger, Kubota J108 8kw diesel generator.

boB

OK, I see.   Yes, they will be kind of hard to get to agree closely.  It's mainly the input measurements
which are not nearly as important to be as accurate as the output measurements.

I would still like the input current/voltage to be much closer though and that will
eventually happen, I hope.

boB
K7IQ 🌛  He/She/Me

offgridQLD

Off grid system: 48v 16x400ah Calb lithium, Pv array one  NE facing  24 x 165w 3960w, Array two NW facing 21 x 200w 4200w total PV 8200w. Two x Classic 150,  Selectronic PS1 6000w inverter charger, Kubota J108 8kw diesel generator.