|
Post by playersz28 on Dec 14, 2019 14:08:54 GMT
Adafruit sells the INA260 breakout board. One concern, actually two concerns, the size of the board, and the terminal connector. The terminal connector will have to be able to handle a 12AWG or maybe even a 10AWG wire, wonder if it is up to the job. The board itself is, I think the size of a quarter, you will probably need a very sturdy surface and some good screws. It seems like the wire that I am working with has a coil to it, and that coil is always trying to return back to its coil shape after it gets straighten out. Looking at the INA260 it's not suitable for high current systems. There is no way to bypass the integral shunt and use an external shunt. The INA219 doesn't have an on chip shunt and I removed the breakout board shunt in my system to use it with a 500A/50mv external shunt.
|
|
raydas
Solar Devotee
Posts: 166
|
Post by raydas on Dec 14, 2019 15:26:48 GMT
I looked at the details for the INA260, it shows up 36V and 15A. I was thinking of using one for the solar panel array, in my system, I have never seen it even close to 15A. The volts on the solar panel array have been around 20V. So it looks like for my setup, this might work.
For the volts part I have a voltage divider breakout combined with an ADC, to get the actual readings. I use the Solar Station Monitor program to get the Amps and current readings. Since I have noticed the Solar Station Monitor program values are somewhat different from the actual values, I wonder if I should rely on those Amp value readings. Maybe the actual Amp values exceed 15A, that would make the INA260 relatively useless.
|
|
|
Post by playersz28 on Dec 14, 2019 19:37:31 GMT
I looked at the details for the INA260, it shows up 36V and 15A. I was thinking of using one for the solar panel array, in my system, I have never seen it even close to 15A. The volts on the solar panel array have been around 20V. So it looks like for my setup, this might work. For the volts part I have a voltage divider breakout combined with an ADC, to get the actual readings. I use the Solar Station Monitor program to get the Amps and current readings. Since I have noticed the Solar Station Monitor program values are somewhat different from the actual values, I wonder if I should rely on those Amp value readings. Maybe the actual Amp values exceed 15A, that would make the INA260 relatively useless. I don't measure current flow anywhere except on the battery connections. The INA219 is a high side monitor so the shunt is on the positive side of the battery. My install is in a fifth wheel trailer. When I run the 2000w inverter at full load it'll draw upwards of 175A from the batteries.
|
|
|
Post by cdevidal on Jan 5, 2020 5:36:40 GMT
Does this document apply to the Wanderer 10A as well?
|
|
|
Post by mediadogg on Jan 6, 2020 14:55:20 GMT
|
|