[RE-wrenches] SW AGS

Wed Aug 7 12:54:13 PDT 2013

Hi Eric,
 Sounded like bad batteries to me also (I think he called in this AM). He 
has (2) XW6048 units that are 
capable of 200ADC between them, and he also has 1260Ah of flooded 
capacity. DC Start V is set for 46.5V, so if we assume he was close to 50% 

discharge (depending on load), it should take almost 2 hours to reach the 
bulk voltage (80% replaced). His batteries were ramping up to bulk 
in just a couple of minutes, meaning the batteries were not absorbing the 
charge. I have heard varying opinions on the symptoms of sulfation, 
but it does sound like a battery issue (5 yrs old). He was advised to 
equalize to try and recover them (he has never done this), or replace 
them.
Rgds,

_____________________________________________________________________________________ 

Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED 
STATES  |   Technical Support Representative 
Phone: +(650) 351-8237 ext. 001#  |   
Email: eric.bentsen at schneider-electric.com  |   Site: 
www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., 
Livermore, CA 94551 

*** Please consider the environment before printing this e-mail 

From:
"SunHarvest" <eric at harvesthesun.com>
To:
"RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Date:
08/07/2013 12:39 PM
Subject:
[RE-wrenches] SW AGS
Sent by:
re-wrenches-bounces at lists.re-wrenches.org

I read through the archives on the XW AGS thread but have a query on 
behalf of a customer with an SW AGS issue. I'm heading out to the remote 
site tomorrow and would like, if possible, to show up knowing what I might 
be up against.

The customer recently replaced his AGS for his two SW 6048s and then 
upgraded his firmware a week later. He reported that his problem with the 
AGS began after firmware upgrade. Here's the particular issue:

AGS will try to start the 15.8kW Multi-Quip genny due to low battery 
voltage (event 306 DCV start). After about 5 minutes the AGS will stop the 
genny due to battery absorption level reached (event 313 ABS stop). The 
AGS will go through this event 306/313 cycle on and off until the 
homeowner shuts down the AGS. To me this sounds like bad batteries. But, 
the homeowner says this cycling does not occur when he manually starts the 
generator. This doesn't sound like a complicated problem but so far I'm 
unfamiliar with the SW AGS. So, I would greatly appreciate any insight you 
guys can offer me.

Thanks!!

Eric
SunHarvest
001.530.798.3738 (Cell)

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