Hi Jay -
Usually 408 delta will have 3 legs. See https://en.wikipedia.org/wiki/Three-phase_electric_power
Unlike Wye, the neutral is center tapped from the winding between two of the legs.
The third is a hi leg or "stinger" leg that is 1.5 times the others voltage to neutral.
Sounds like what you have is two of three legs with a center tapped neutral; the the hi leg is probably around somewhere on site.
If you can find it then a 3-phase inverter will work.
Otherwise, as mentioned you will need a transformer to get 240 across the legs you have.
But 10kW of solar will unbalance the phases. Best to find that third leg and use a 3-phase inverter.
I have used the Fronius IG Plus 11.4 for this with good results.
Don Barch
Energy Solar
Date: Fri, 29 Apr 2016 08:03:26 -0700
From: jay <jay.pe...@gmail.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] 480 single phase delta
Message-ID: <b75c4e4a-5eb4-49d0-a7d4-9bdee1e40...@gmail.com>
Content-Type: text/plain; charset="utf-8"
HI Jerry and all,
I?m sorry if I confused the issue.
I haven?t seen this, I?m doing the research for a friend.
It has been measured at numbers provided. 480 line to line, 240v line to neutral, 2 hots wires, not 3.
The client has been told by 3 different installers that its impossible system to do.
And as the experts here have provided, thats just not true.
Thanks for the input.
jay
> On Apr 28, 2016, at 6:58 PM, Jerry Shafer <jerrysgarag...@gmail.com> wrote:
>
> I cant say l have seen a single phase delta, open delta, use two of the three legs but not on pumps, can someone explain, what am l missing as the term delta is three points
> Jerry
>
> On Apr 28, 2016 3:50 PM, "Jay" <jay.pe...@gmail.com ><mailto:jay.pe...@gmail.com>> wrote:
> Great inverter but this is single phase.
> Jay
>
> Sent from my iPhone
>
> On Apr 28, 2016, at 3:10 PM, jerrysgarage01 <jerrysgarag...@gmail.com ><mailto:jerrysgarag...@gmail.com>> wrote:
>
>> What about an SMA Tri Power inverter
>> Jerry
>>
>>
>> Sent via the Samsung Galaxy S? III, an AT&T 4G LTE smartphone
>>
>>
>> -------- Original message --------
>> From: Chris Mason
>> Date:04/28/2016 8:52 AM (GMT-10:00)
>> To: RE-wrenches
>> Subject: Re: [RE-wrenches] 480 single phase delta
>>
>> You will use a 240:480v step up transformer
>>
>> On Apr 28, 2016 14:17, "jay" <jay.pe...@gmail.com ><mailto:jay.pe...@gmail.com>> wrote:
>> HI All,
>>
>> I have a question from a person wanting to do a intertie on a commercial water pumping site with
>>
>> 480v single phase delta configuration.
>>
>> PV will be in the 10kw range.
>>
>> Anybody have an idea of what equipment will work for this?
>>
>>
>>
>> thanks
>>
>> jay
>>
>> peltz power
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