[RE-wrenches] Adding Charge Controller(s)

[Roy Rakobitsch]

Not sure what this is worth, but with most Kyocera modules that used the
same size cells (but different amount of cells per module) you could wire
many different VOC modules in series as long as the total number of CELLS
per string was the same. It wouldnt matter what the individual module
ratings were (as long as the total array was mounted at the same tilt and
azimuth, an MPPT charge controller wouldnt know the difference. Ive done
this many times with grid tie inverters, and honestly it wouldnt make a
difference with a charge controller either. Different age cells/modules
may make a slight difference. But what Im suggesting is to count the cells
in the strings.

Hope that made sense.


Roy Rakobitsch
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
NYSERDA eligible Small Wind installer
Certified Advanced Tower Climbing, Safety & Rescue
Wind/PV Design Engineer
Windsine Inc.
631-514-4166
www.windsine.org


On Thu, October 24, 2013 8:51 pm, toddcory at finestplanet.com wrote:
>
> VMP not VOC
>
> todd
>
>
>
> On Thursday, October 24, 2013 1:26pm, "jay peltz" <jay at asis.com> said:
>
>
>
>> Hi Jeffe,
>>
>> I don't know the specs on those Kyocera, but if they are the same VOC
>> then they
>> are fine together.
>>
>> As to a enclosure for the CC's, I'd look at Midnight.
>> They have about a million different boxes, you'll find one that will do
>> the job
>> for you I'm sure.
>>
>> Depending on the area, you might look at a midnight 150v, or  200v or
>> 250v
>> controller, as you can then run all in series.
>>
>> jay
>>
>> peltz power
>>
>>
>> On Oct 24, 2013, at 1:13 PM, Jesse Dahl wrote:
>>
>> > Hello,
>> >
>> > Looked at a system today that consisted of the following:
>> >
>> > 15 - Kyocera 158W modules
>> > 3 -   Kyocera 185W modules
>> > 1 -   Outback MX60
>> > 8 -   New Trojan L16RE (48V system)
>> > 1 -   Xantrex SW Plus
>> >
>> > 6 months ago he swapped out his old charge controller to the new MX60
>> and
>> purchased the new batteries at that time.  The array wiring did not
>> change and is
>> wired in 6 strings of 3.  (confusing to the MX60?)
>> >
>> > He is now adding 4 Kyocera 240W modules.  He also purchased another
>> MX60 for
>> this array.
>> >
>> > From my perspective, removing the 3 185W modules and getting them on
>> their
>> own controller would be a better use of the modules.  The system
>> currently does
>> not have any disconnects on the PV side.  There are fuses in the
>> combiner boxes on
>> the array, but no disconnects inside at the charge controller.  So
>> adding 3 charge
>> controllers, and now needing to add GFDI, means a box of some kind needs
>> to be
>> added to house these breakers.
>> >
>> > Outbacks GFPs and panel mount breakers will work, but what is the best
>> mounting solution for these?  One DC Flexware enclosure? It will of
>> course allow
>> for all the DC OCPD  and allow for the landing of the output of the
>> charge
>> controllers.  Or is there another enclosure/OCPD solution I should look
>> at?
>> >
>> >
>> > Thanks as always!
>> >
>> > Jesse
>> >
>> >
>> >
>> >
>> >
>>
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