Sounds like you are working with a 120/208V system?
What do you get from line to ground?
> On Feb 13, 2018, at 9:53 AM, Eric Stikes <e...@harvesthesun.com> wrote:
> I am troubleshooting a SolarEdge system with 9kW 3-Ph inverters. The system
> is working OK but production is a bit low. There may be other factors and I
> am looking into those too but I want to sort out this one issue: I am not too
> familiar with 3-phase and when I ask SolarEdge about best way to connect to a
> 3-Ph delta, they advise to stay away from the stinger and connect a 1-ph
> inverter to L1 & L2 only, and that has worked out fine. However, This system
> has a 3-ph inverter and L1 to L2 is reading about 215 volts from the utility.
> L1 to L3 is the same and L2 to L3 is also about 215 volts. Perhaps this is a
> 3-Ph WYE with just a higher than typical voltage coming from the utility
> t-former. My thought here is that maybe the 3-ph inverters are only providing
> 2/3 power back to the utility, or if there's some way to get to 240v L-L. The
> existing loads are serviced by both 2-pole and 3-pole breakers but everything
> is pretty much 1-phase I believe. I'm wondering if I should consider
> reconfiguring the system with 1-Ph inverters tied in to only 2 of the utility
> legs. I asked SolarEdge weeks ago but getting nothing from them. Any
> thoughts? Thanks!
> Eric Stikes
> SunHarvest Solar
> +1 (530) 798 - 3738
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