Re: [RE-wrenches] 3-Phase SolarEdge L-L 215v

2018-02-13 Thread Joe Nelson 
  To date, we have had the greatest success placing a secondary transformer in 
between the inverter and the PCC( as we have run into this on more than one 
occasion already). The inverter seems to operate best, and weather it’s WYE, 
DELTA  or a wild-leg(stinger) you can specify exactly what you need to feed 
in/out to get the electrical characteristics you are looking for.



Hammond(HPS Sentinel series) work very well,

Dongan transformers have also worked very well for us so far.



From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Benn Kilburn
Sent: Tuesday, February 13, 2018 9:31 AM
To: ericsti...@gmail.com; RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] 3-Phase SolarEdge L-L 215v



Sounds like you are working with a 120/208V system?

What do you get from line to ground?

Benn Kilburn

SkyFire Energy

780-906-7807


On Feb 13, 2018, at 9:53 AM, Eric Stikes <e...@harvesthesun.com 
<mailto: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
www.harvesthesun.com <http://www.harvesthesun.com/>

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Re: [RE-wrenches] 3-Phase SolarEdge L-L 215v

2018-02-13 Thread Benn Kilburn 
Sounds like you are working with a 120/208V system?
What do you get from line to ground?

Benn Kilburn
SkyFire Energy
780-906-7807

> On Feb 13, 2018, at 9:53 AM, Eric Stikes  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
> www.harvesthesun.com
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