Trace Charge Controller Ratings [RE-wrenches]

[William Miller]

At 12:03 PM 4/28/02 -0700, Chris Worcester wrote:

>
>For the large system you're designing I like the layout as it eliminates
>separate fused disconnects at each charge controller. Do you have fusing on
>the array side of the charge controller?
>
>Sincerely,
>

Chris:

I am relying on the fuses within the Connect PCB-10 combiner boxes.  The
Class T protects up to the QOU breakers in the custom combiner, the QOUs
protect up to the PCB-10 and the individual arrays are protected by the
PCB-10 combiner fuses.

John Berdner of SMA wrote an intriguing paper on interpretation of string
fuse requirements and presenting scenarios in which string fusing is not
required.  I did not even perform the calculations on this job as I want to
be able to isolate each series string for testing.  Kyocera has had some
quality problems and this will allow the testing needed for assurance.

Thanks for the comments.

William Miller



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