1201
Solar Wizard
Thats how it's supposed to work. If it didn't have that there would be nothing for an ac coupled inverter to synchronize to and it would not even start up.
AC coupling EG4 18k to Solark 15k
- Thread starter betojf
- Start date
zanydroid
Solar Wizard
It’s definitely going to have 240V, even as a load (in AC coupled or in generator assist) it has voltage. IE it parallels inverter with the Gen port. It doesn’t (and can’t) connect to gen port as a strict charger
Gotcha
Yes I understand now
1201
Solar Wizard
For what benefit?
MaikaiLife
Solar Enthusiast
31 posts and we're not clear about what you're trying to achieve. It would be really helpful either create a simple video, illustration or write out what your goal is with this configuration... We understand you want to have one inverter act as a generator for another.. but why are you trying to do this?
I have too much power in my off grid setup. I want to use it to help my grid tie system specially during time of use
Sorry about that. Too much power in my off grid system. I’m wasting sun
zanydroid
Solar Wizard
You absolutely should have led with that.
You have to AC couple it, you can’t use it in generator mode
You have to AC couple it, you can’t use it in generator mode
zanydroid
Solar Wizard
Also this configuration will require POCO approval, because the 18kpv is going to be paralleled with grid power via going through the SolArk. And will likely cause you to have detectable surplus export to grid
Got it so I was under impression I can use my batteries as the middleman so if that’s the case I wanted to charge my batteries from the 18k in my Solark system with AC coupling.
1201
Solar Wizard
You can connect the 18kpv to the panel via the grid input. Attach the CTs , and set up time of use.
DIYrich
Solar Wizard
No! Eg4 grid input goes to the sol-ark. Devices take power from Load. Eg4 pushes power to sol-ark via grid input. When SA is told AC PV is on Smartload, the it waits for AC PV to push power.
DIYrich
Solar Wizard
Setup eg4 to charge battery. Sol-ark can take power from battery during time of use high prices.
If you need more thank 12kw of ac power, then you need the more complicated setup of eg4 GRID connection to sol-ark Smartload.
I was hoping to do that via the setup I’m trying. Could there be an issue due to the neutral / earth bond on the breaker switch?
SolarFlares
Solar Enthusiast
Can you try turning off the main breaker for your grid power and testing again? That would let you know if the problem is related to the solark being on grid.
DIYrich
Solar Wizard
Disconnect the eg4 from the sol-ark. Until you do that, you don't know if there is a problem, and what is causing it. Load port to smartload is not a supported configuration.
I have no problem when the breaker from eg4 18k to solark is off
Just a quick update: It looks like the issue was due to the lack of a shared neutral between the EG4 18K and the Sol-Ark 15K. The neutral for the 18K was bonded to the earth at the breaker panel. After removing the ground screw from the bond and connecting the neutral to the neutral in the 15K, along with the red and black wires to the GEN input on the Sol-Ark 15K from the grid terminal, I'm no longer seeing any errors.
Next, I'm planning to attempt "selling power" from the EG4 18K to the Sol-Ark 15K. I’ll do this by connecting the grid terminal from the 18K to the GEN terminal on the 15K to charge the 15K's batteries.
Next, I'm planning to attempt "selling power" from the EG4 18K to the Sol-Ark 15K. I’ll do this by connecting the grid terminal from the 18K to the GEN terminal on the 15K to charge the 15K's batteries.
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