[RE-wrenches] Radian GSLC

[Drake]

The relay to protect the generator only works 
when the generator is automatically started! A 
manually started generator has no protection 
against backfeed. I had to set up a contactor to 
protect the generator from backfeed from the AC coupled array.

At 11:14 AM 5/13/2016, you wrote:
>BTW, the ROCB also uses both of your AUX relay 
>options. Got called in to evaluate a 6 Radian AC 
>Coupled configuration with no charger 
>controllers and 6 Fronuis. What a cluster 
>*%#%(^. The project was a very bad design from 
>the beginning. That's what happens when you ask 
>a grid tied installer to give you a battery back up solution.Â
>
>Christopher
>
>On Fri, May 13, 2016 at 10:37 AM, Drake 
><<mailto:drake.chamberlin at redwoodalliance.org>drake.chamberlin at redwoodalliance.org> 
>wrote:
>William and Wrenches,
>
>The lack of room in the GSLC becomes much worse 
>when using the factory installed AC coupling 
>"solution" using the Remote Operated Circuit 
>Breaker or ROCB. This takes up 3 breaker spaces 
>plus puts two relays under the breaker column. I 
>had to change out the ROCB twice in the one system I installed.Â
>
>The ROCB "solution" takes AC coupling, which is 
>essentially straight forward and complicates it 
>exponentially. Plus the ROCB itself is prone to 
>failure, which could ruin a set of batteries. 
>There are numerous other serious problems with 
>their approach. With "solutions" like this one, who needs problems!
>
>Drake
>Â
>At 02:52 PM 5/12/2016, you wrote:
>>Wrenches:
>>Â
>>The recent topic about bypass connections for 
>>the Radian is a very pertinent issue for anyone 
>>designing a Radian system.  The problem is 
>>exacerbated by what I perceive is one poor 
>>design aspect of the GSLC cabinet.ÂÂ
>>Â
>>I generally like the Radian series, including 
>>the GSLC.  I do find it puzzling that 
>>installers are expected to make connections to 
>>the rear of panel mount circuit 
>>breakers.  This has to be done blind and in 
>>very tight quarters.  This is further 
>>complicated by the expectation that one will 
>>install AC and DC circuit breakers in the same panel.
>>Â
>>We have tried leaving slack on the leads so the 
>>panel can be rotated, but that leaves more lead 
>>length than the cabinet will handle.ÂÂ
>>Â
>>Our solution is to move all AC breakers out of 
>>the GSLC and into adjacent, off-the-shelf load centers.ÂÂ
>>Â
>>We put the minimum PV breakers in the panel, 
>>located at the top for maximum latitude on 
>>tilting the panel out for access.  We also 
>>pre-install the breakers in the panel in a 
>>bench vise with extra lead length and install 
>>the panel as a unit, hopefully never requiring access to the rear again.
>>Â
>>I applaud the GSLC as a decent product, but it 
>>does need improvement in this area.
>>Â
>>Sincerely,
>>Â
>>William Miller
>>Â
>>Â
>>
>>Lic 773985
>><http://www.millersolar.com/>millersolar.com
>><tel:805-438-5600>805-438-5600
>>Â
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>>
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><http:www.solarandwindfx.com>
>[]
>
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