Hi,
I am having trouble with a system that I have converted from off grid to grid connect with ESS.
Since installing the ESS, the Quattro’s will disconnect the Ac input and cause the Enphase system to drop out.
Any ideas where I should look?
System
3 x 15kw Quattro’s set up as 3 phase
Generator connected to ac 1 in
Grid connected to ac2 in
34kw Enphase system connected to ac out of inverters
86Kw/h Vaulta battery bank
When the Quattro disconnects you might see a change in the voltage (Quattro voltage setting vs grid voltage) or frequency which upsets the Enphase… that would usually recover in a minute or two… do you have an energy meter so you can see the Enphase production values (because last I looked they didn’t do Sunspec comms)…?
Hi Dean,
The Enphase is connected on the ac out side of the inverters, so I havent used an energy meter at the inverters (allthough the Enphase has their own energy meter connected to the gateway)
Do you think there is a setting I need to change?
How is the ess assistant programmed?
And you would need to find out why is the grid being rejected/disconnected?
Which emphase do you have?
Hi, the Enphase inverters are IQ7A. They are still set up with an off grid setting.
Are there any particular ess settings i should be looking at?
Its hard to tell if the Enphase disconnects first, or the quattro? When you watch it the quattro looses the grid, but i would have thought the Enphase was tied to the quattro output which is consistent…
Not the settings, is the assistant programmed with ac coupling?