[RE-wrenches] Outback Grid Problems

[penobscotsolar at midmaine.com]

Ray, Believe me when I say I have gone through all the exercises described
so far by our esteemed colleagues. I think you will find the problem is
with the customers transformer. I continue to make impressive amounts of
kwh since the swap out last week.

Daryl




> Battery bank is in great shape, is brand new HUP set.
>
> Thanks,
>
> R. Walters
> ray at solarray.com
> Solar Engineer
>
>
>
>
> On Mar 31, 2010, at 6:19 AM, tump at hughes.net wrote:
>
>> Ask the customer to ck the cells for bubbling during the charging period
>> to make sure the cells all are good OR Isolate the battery banks to make
>> sure there isn't a dead cell the OBs are trying to charge. BB1 one day,
>> BB2 the next & so on.
>> Sent via BlackBerry by AT&T
>>
>> -----Original Message-----
>> From: R Ray Walters <ray at solarray.com>
>> Date: Tue, 30 Mar 2010 10:42:58
>> To: RE-wrenches<re-wrenches at lists.re-wrenches.org>
>> Subject: [RE-wrenches] Outback Grid Problems
>>
>> We currently have a Grid Tie system with a pair of Outback inverters
>> that are regularly dropping out of sell mode, and letting the arrays
>> spend all day charging the battery bank.
>> It seems to do this several times a week, and the customer is losing
>> substantial production, and gassing the batteries too much.
>> It will reset itself the next day, or the customer resets it by turning
>> off the inverters manually.
>> The system is 24 v, with an old array of 1800 watts running through 2
>> FM60s, and a new array of 2800 watts running through another pair of
>> FM60s.
>> The battery bank is HUP about 4100 Ah @ 24 v (3 strings of 1375 Ah each)
>> Big battery, I know, but the customer is an electrical engineer, who
>> wanted maximum storage capacity.
>>
>> Outback tech support has not resolved the issue, and this has turned
>> into several service calls, and customer frustration.
>> We've tried running the controllers through the HUB, and also
>> independently, and that doesn't make a difference.
>> I have numerous Outback GT installs dating back to 2003, and have never
>> had a problem like this.
>> Any help or advice would as always be greatly appreciated.
>>
>> Thank you in advance fellow Wrenches,
>>
>> R. Walters
>> ray at solarray.com
>> Solar Engineer
>>
>>
>>
>>
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