[RE-wrenches] Radian GSLC

Drake drake.chamberlin at redwoodalliance.org
Fri May 13 07:37:44 PDT 2016


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.

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

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.Â
>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.Â
>Â
>Our solution is to move all AC breakers out of 
>the GSLC and into adjacent, off-the-shelf load centers.Â
>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
>Gradient Cap_mini
>
>Lic 773985
><http://www.millersolar.com/>millersolar.com
>805-438-5600
>Â
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