Outback MX60 question [RE-wrenches]

[Christopher Freitas --- OutBack Power]

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Ray Walters wrote:

> Outback is crossing the threshold from the infancy of solar towards 
> a more mature market. We will continue to support companies that 
> support us.

We very much appreciate this discussion and will be using it to make 
some decisions on a formal policy for our products.  

> Also, I have a possibly dumb technical question: Allan and several 
> others stated they were using the MX60 with 72 v arrays. I was under 
> the impression from previous discussions, that the Voc in very cold 
> weather could possibly exceed the MX60s  max rating and void the 
> warranty. Am I operating on old info? The last copy of the MX60 
> manual I have seems to make it sound too iffy to try.

It depends on the specific modules and how cold it will get at your 
location.  There also is the issue of the 150 VDC limit on both the MX60 
and the DC circuit breakers themselves - although I do not think very 
many inspectors understand that cold temps increases the VOC so much.   

We have many installed 72 vdc nominal systems which have been operating 
in very cold locals which are exceeding the 150 VOC level - but I still 
am not comfortable with recommending it "officially". We have a test 
setup here which we have ran the equivalent of 3.5 x 24v modules in 
series (7 x 12vdc actually) which exceeds the 150V limit - and we 
haven't had problems... 

One issue is what happens when we do find an inspector who understands 
this issue and decides that the system is not acceptable?  

> Also, how close are you to having a windows based interface for 
> programming the MX60 and FX inverters? The third party software I've 
> seen while having nice monitor and data logging features, doesn't 
> allow access to the advanced programming. I'd sure like to take my 
> laptop out and be able to check all settings on one screen, and have > 
> my own presets that I just dump onto the inverters at setup. Am I 
> still dreaming?

This is something we have been working on for a long time and its just 
not possible with the current MATE's limited processor/hardware 
unfortunately - we are working on a "supercharged" version of the MATE   
which will enable this and much more... stay tuned.  

Christopher Freitas
OutBack Power Systems, Inc.
cfreitas @ outbackpower.com  
www.outbackpower.com
Arlington WA USA
Tel 360 435 6030  

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