Status of Bench Testing of GS inverts.

1 hour ago, Sid Genetry Solar said:

It will be somewhat difficult to accurately measure, but a rough calculation can be determined with Ohm's Law.  4kw * 1.1 (allowing 10% loss, i.e. 90% efficiency) = 4,400W / 24v = 183.3A off the batteries.

At full 12kw total load across the 2 inverters, that's a cool 550 amps at 24v.

Well, thats not too bad.  too bad I can't use a victron shunt 500a, would have to buy the 1k version.  of course I think you got where it shows how much amps its pulling?  I think you should come out with a wifi shunt that is better then victron expensive name brand stuff.  They think their stuff is made out of gold. . . and a GS inverter can blow theirs out of the water any day, and have more freatures then theirs. for less. . .

1 hour ago, The Blind Wolf said:

of course I think you got where it shows how much amps its pulling?

Not currently, but it's in the plans on the Rev. C board.  Can't guarantee how accurate it'll be (due to manufacturing tolerances), but it's worth a thought.

The Blind Wolf nice to hear your inverter is coming along.  The picture shows some nice smooth waves exactly 180 degrees apart. That is a good selling point for the future for sure.  Having a single phase inverter as an option sounds appealing to me. 

Hoping you read this because I am curious if you know of a good source for audio clips of things read out loud or simulated voice. You came to mind because you may have already made something like I am planning.  I want to put a little speaker with a big button in my system to read the voltage out loud for night time so I don't have to try to look at the screen if I hear some beeps.

What'd be really fancy would be some way to tie the GS inverter data into a "smart home" system (Amazon Alexa, Apple Siri, Google Home, etc.)--as much as I never plan to utilize one of those devices, a lot of people do use them.  Maybe you (or someone else) has experience doing this sort of integration?  Inverter data can be read off the web server via MQTT over WSS.

Would be really convenient to roll over, "Hey Google, what's the battery voltage?"  "Your battery is at 46.1 volts, do you want me to start the generator?"

14 minutes ago, AquaticsLive said:

The Blind Wolf nice to hear your inverter is coming along.  The picture shows some nice smooth waves exactly 180 degrees apart. That is a good selling point for the future for sure.  Having a single phase inverter as an option sounds appealing to me. 

Hoping you read this because I am curious if you know of a good source for audio clips of things read out loud or simulated voice. You came to mind because you may have already made something like I am planning.  I want to put a little speaker with a big button in my system to read the voltage out loud for night time so I don't have to try to look at the screen if I hear some beeps.

 

Yep, its called a talking volt meter, I got three of them, two in the fire valt just for backup and one I use for the past three years.

https://www.mpja.com/Talking-Digital-Multimeter/productinfo/35042+ME/

Hope that is what you looking for, you can mod it with a way to reactivate the voice and check the voltage. cause it auto shuts off. it takes a 9v batt.

41 minutes ago, Sid Genetry Solar said:

Not currently, but it's in the plans on the Rev. C board.  Can't guarantee how accurate it'll be (due to manufacturing tolerances), but it's worth a thought.

What a thought to make a stand alone shrunt that makes victron look silly?

Well, amazon has a skill builder, it wouldn't be hard to imploment it Sid if you look it up, its just need  to be able to see it local wifi network to work.

3 minutes ago, The Blind Wolf said:

What a thought to make a stand alone shrunt that makes victron look silly?

Have thought about it; it'd have to tie into the WiFi board somehow.  Finding high-amp shunts isn't the cheapest, though.  Hall sensors are the easiest to work with (just clamp 'em over the wires)--but they're nearly $30.

If I really, and I mean really wanted to do it I could write scripts for my screen reader to do all the dirty work and report it back to me.  I just waiting for the inverters to show up at my door and maybe get in the mood to want to dive into writing something like that up.  You should be able to pull it off faster since your the developer and master of it all. . I'm just a little pee-on that only does things when its convenient and not going to fry my brain cells to learn something complex 😛

2 minutes ago, Sid Genetry Solar said:

Have thought about it; it'd have to tie into the WiFi board somehow.  Finding high-amp shunts isn't the cheapest, though.  Hall sensors are the easiest to work with (just clamp 'em over the wires)--but they're nearly $30.

Well that is what I got running my house info, is the thing called Sense and its got two clamps over the main lines and then the device is wired up to a 240v breaker.  I thought of takeing them off the main and throw them around the double wire going to the breaker from the gs inverts and see if it will detect the wattage.

17 minutes ago, The Blind Wolf said:

Hope that is what you looking for, you can mod it with a way to reactivate the voice and check the voltage. cause it auto shuts off. it takes a 9v batt.

Thanks that is great.  Thanks for info seemed like something that should be out there already. 

Matter of fact I will just do that, that will let me know what the load is on each leg.  Well it reports it as total watts, I'm sure it shows each leg if you could see, I just watch the watts. I don't know how balance my panel is, since all the 240v breakers are on one side and the 120 on the other side, the two breakers for the two gs are one on each side, its only going to leave 2 2 pole breaker open and my panel will be full. If I go with a ev charging from that panel, I would have to upgrade it with a bigger one.  But, I figured I got a exmpty breaker box that I'm not useing, I'll just use it with the 12k inverter when it comes to setup a chargeing station.  I kind of wish now that I switch to 48v, but I can'[t cause of all the different battery banks I got, none of them would pair up corrently as far as Ah.  I do got those 18650 and if I pair those two up I would have a 48v 110 ah batt. and I do got the bms to pull it off.  That might be what I'll save for the 12k since I will have a small building setup for the ev charging station.

5 minutes ago, The Blind Wolf said:

I thought of takeing them off the main and throw them around the double wire going to the breaker from the gs inverts and see if it will detect the wattage.

Almost certainly will not work.  Problem is, it's SUPER easy to detect AC amperage.  You could literally wrap some turns of wire around an AC power wire, and scale it to determine the current flowing through the AC power wire. 

But sensors have to be specifically designed to read DC amperage--sensors that measure DC amperage are not very common.  Instead of the magnetic field pulsing with the AC wave (easy peasy transformer material!), DC magnetic fields are static, and have to be measured with respect to a calibrated "zero".  I'm pretty sure if the sensor is not magnetically shielded, ambient magnetic forces can very easily affect the reading.

A regular AC sensor on a DC power line will read 0 amps, regardless of the current flowing through it.  Side note: an AC sensor on the power lines to an inverter WILL read some sort of current, but it will have far more to do with the type of load, than the actual load itself.

Well, I mean you could use a RP and breaker out board with the voltage sensor thing and a button that triggers the rp to speak it out, but thats makeing it more complicated then taking that volt meter out and modding it to do what you want.

Well, come to think about it, the meter when it cuts off the top left button I think will turn it back on and read off, just change the probs to gator clips. 😛