[RE-wrenches] 3-Phase Service, One Phase Fails

[Chris Mason]

I have felt for some time that inverters should have a logic control to
turn them off. "Short contact A to ground to disable inverter" type of
interface. If we had that, we could implement generator protection very
simply.

For your application, I see these being used in 3 phase pump control
systems.
http://www.taylorphaseguard.com/
Let me know if you need any more information.


On Tue, Sep 24, 2013 at 12:56 PM, Chris Mason
<cometenergysystems at gmail.com>wrote:

> Real simple. A contactor with a phase loss detector gadget.
>
> Chris Mason
> Comet Systems
> Anguilla (264) 235-5670
> St. Kitts  (869) 662-5670
> skype netconcepts
>
> NABCEP Certified Solar PV Installer™
> Renewable Energy Systems professional
> Generac Generators Factory technician
> On Sep 24, 2013 11:12 AM, "Karl Jaeger" <kjaeger at lightwavesolar.com>
> wrote:
>
>>  Greetings Esteemed Wrenches,****
>>
>> We are building a 35.75kW project with (6) Power One 6000’s. The service
>> is a 240 delta. The utility is requiring (late in the game) that if one leg
>> of the service is lost, all inverters must shut down. Of course, we have
>> two inverters that do not shut down in that circumstance because they are
>> only tied into the other two phases. SMA has a good (cheap) option to deal
>> with this, SMA Power Balancers. With other inverters this can be
>> accomplished by installing an ATS with an integrated controller by
>> programming in the unacceptable phase imbalance (expensive). Does anyone
>> have experience with this requirement and/or have a good (cheaper) solution?
>> ****
>>
>> Thank you in advance!****
>>
>> ** **
>>
>> Karl Jaeger****
>>
>> LightWave Solar ****
>>
>> Nashville, TN****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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