Xantrex Sun tie inverter [RE-wrenches]

[Ezra Auerbach, DragonSun Consulting]

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I believe that Alpha has a grid tie inverter (Solaris 3500)  which  
has a rather low DC input voltage (96-200 Vdc). It's a bit oversized  
with a 3.5 kW rating but on the other hand you'd never be pushing it.

Cheers,



Ezra Auerbach
DragonSun Consulting
Lasqueti Island, B.C. V0R 2J0

ezra at lincsat.com
250 333 8650



On 25-Nov-06, at 1:14 PM, Jay Peltz, Peltz Power wrote:

>
> Hi Allan,
>
> Yep all this is possible, but then you have to add a timer onto it  
> so that it delays closing for 5 minutes.
> Also the problem is that it takes a bit of time ( especially for  
> this inverter ) to MPPT and so it'll go VOC, poof.
>
> This is the first one I and my hydro guru have tried at low  
> voltage, and like I said at high voltage its easy, lots of voltage  
> room and choices,
> but at this low voltage its tough.
>
> cheers,
>
> jay
> On Nov 25, 2006, at 1:06 PM, Allan Sindelar wrote:
>
>>
>> Jay,
>> Since it's a low-cost, low-risk system anyway...how about a NC AC- 
>> coil relay
>> powered by grid, with the NO/Common power terminals directing DC to a
>> resistive dump load? (Not that I've tried this...) Grid goes down,  
>> relay
>> immediately opens, allowing hydro to go to the dump load. You  
>> might have to
>> use an MDI mercury contactor to handle the 100V DC, but they're  
>> not that
>> expensive in 60A capacity.
>> Allan
>>
>> ----- Original Message -----
>> From: "Jay Peltz, Peltz Power" <jay at asis.com>
>>>
>>> Yep trying to keep this from happening, of course this guys at the
>>> end of the road way out, common winter power outages so this is a
>>> real concern.
>>>
>>> Yes I can get some pretty pricey  dump loads from SWWP, but trying
>>> not to.
>>>
>>> Thanks,
>>> jay
>>>
>>>
>>> On Nov 25, 2006, at 12:04 PM, Don Loweberg wrote:
>>>
>>>>  What fun to be on the cutting edge. The main thing is to keep the
>>>> turbine max v below the smoke point. One concern I would have is
>>>> the situation when the grid goes down, inverter shuts off, turbine
>>>> load goes to zero, turbine revs up and smokes inverter. Seems like
>>>> the wind guys may have had to deal with this situation. Good  
>>>> luck Jay.
>>>
>>
>>
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>
>
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