Sounds like you talked to the right guy, that's his info...except that he has, according to what he told me, an SW not an XW. I'm assuming he's maybe at 50% capacity on his original 1260Ah bank based on everything he told me this morning. He did say that his bank will last him through the night and that he has some pretty hefty air conditioning loads. He also said he had equalized in the past but not in the last 18 months. I'm just not convinced that his batteries are shot. But all this battery talk may be beside the point if he's not experiencing the same on/off cycling problem when he manually starts the genny, right? That is, assuming the disco settings remain in effect regardless of start mechanism. Thanks for indulging me tocayo.
Eric
SunHarvest
001.530.798.3738 (Cell)
----- Original Message -----
From: eric.bent...@schneider-electric.com
To: RE-wrenches
Sent: Wednesday, August 07, 2013 12:54 PM
Subject: Re: [RE-wrenches] SW AGS
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.bent...@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" <e...@harvesthesun.com>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Date: 08/07/2013 12:39 PM
Subject: [RE-wrenches] SW AGS
Sent by: re-wrenches-boun...@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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