Sharp modules [RE-wrenches]

[Christopher Freitas --- OutBack Power]

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Wrenches,  

There actually isn't any fundamental issue with using 12vdc battery 
system with 72vdc PV arrays and the MX60 - the issue with recommending 
it is that we have seen the majority of failures with 12 vdc batteries 
and 72 vdc high voltage PV arrays than with any other configuration.  

The problem appears to be related to some variability in the production 
of MX60s that makes some units "on the edge" when used in  this 
configuration.  We have made some changes in production and we  think 
this issue has been resolved - but if you can use a 48 vdc PV array 
instead of 72vdc PV array than you may experience less issues. 

Either way, you will get full warranty coverage on using them with 12vdc 
batteries and 72 vdc PV arrays.  Some times going with the higher 
voltage PV array configuration makes a big difference in the install 
cost and time - if so, then go ahead with it - we will support it.  

Christopher



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

jay peltz wrote:
> I was told by Outback that they currently don't recommend that we 
> use 72v in stepping down to either 12 or 24v.  But 72v to 48v is OK.

  

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