[RE-wrenches] SW4024
Dana
dana at solarwork.com
Wed Mar 25 13:13:26 PDT 2015
(5) SW4024 change outs last year, they just wore out.
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Dana Orzel
Great Solar Works, Inc - NABCEP # 051112-136
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From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Tump
Sent: Wednesday, March 25, 2015 2:01 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Charging Multiple Battery Banks
Try looking at the New Midnite Kid, allows for two parallel charge
controllers off the same input.
I too have systems that I use 2 CCs for alarm systems pull the 2nd CC "PV
source input" from the 48 VBB and charge the 24 VBB. disable MPPT
I will also agree RU outta of yer mind? Yep the SW 4024s were.... that is
were!, work horses but not to many around. can you say a ticking Tbomb if
this is powering a load in some remote place w/ hi customer expectations
On Mar 25, 2015, at 1:24 PM, Ray Walters wrote:
Hi Jeremy;
I usually would combine both buildings all into one system, KISS principle,
and also less cost. Later when those batteries die, replace with a properly
sized bank. I also wouldn't be building a new system around an SW4024,
those are getting really dated. Great inverter, but they don't last forever.
They have excellent resell value on Ebay for folks that need replacements in
dual and quad systems.
Having said that, Jerry's idea of 2 controllers on one array sounds like it
would work, but not with Blue Sky because of the grounding as Larry
mentioned.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/25/2015 10:36 AM, Larry wrote:
Keep in mind that the Midnite controller has a combined PV and bat. negative
and the Blue Sky requires isolated PV and bat. negative.
Larry Crutcher
Starlight Solar Power Systems
On 3/24/15 6:11 PM, Jeremy Rodriguez wrote:
The thought was to charge the batteries for a new building utilizing an
SW4024 with new classic controller and new L A batteries, and once those
batteries are charged send the PV to the house system which is the 48v setup
with dual outback inverters and dual SB3048 CCs. Lead acid batteries as
well. 3 years old
I've never had this come up in 16 years!
Jeremy Rodriguez
All Solar, Inc.
1463 M
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
On Mar 24, 2015, at 5:31 PM, "Ray Walters" <ray at solarray.com> wrote:
What's the reasoning behind two different battery banks at different
voltages? What is the other equipment involved: batteries type, age,
inverters, etc.?
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/24/2015 5:07 PM, Jeremy Rodriguez wrote:
It would be 2kw of PV
Jeremy
All Solar
Penrose, CO
_____
Date: Tue, 24 Mar 2015 12:17:20 -1000
From: jerrysgarage01 at gmail.com
To: re-wrenches at lists.re-wrenches.org
Subject: Re: [RE-wrenches] Charging Multiple Battery Banks
How big of a system are you looking at as some of the smaller charge
controllers are auto sensing
Jerry
On Tue, Mar 24, 2015 at 12:11 PM, Jeremy Rodriguez <allsolarjeremy at msn.com>
wrote:
Wrenches,
I have a client that wants to charge a 24v battery bank and a 48v bank with
the same array. Different charge controllers, with some type of relay is
what I was thinking, and using the controller's aux. 12v output for the
relay control.
The primary battery to be charged would be the 24v bank, then once it is
fully charged, divert the pv to the secondary controller at the 48v bank.
Any comments or recommendations on this would be helpful.
Jeremy Rodriguez
All Solar Inc.
Penrose, CO
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Tump at swnl.net
<blocked::mailto:Tump at swnl.net%22%20%5Co%20%22blocked::mailto:Tump at swnl.net>
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