Sorry, I did not read enough of this string, I wrongly assumed the issue was
the 4/0 wire not being large enough for the addition. Perhaps be ever more
conservative on the PV expansion and use a Apollo HV100? The migration to 48V
is certainly a logical solution but can be a horrible economic sol
On 10/20/2010 12:16 PM, jay peltz wrote:
Hi Jeff,
Its not the voltage but amps, the apollo is only 80amps, and the old
MX's you can push to 70 so no real advantage there.
j
I think that what he means is that by switching to a 48V battery you can
have (add)
twice as much array power ratin
All good ideas.
thanks,
jay
On Oct 20, 2010, at 11:56 AM, R Ray Walters wrote:
> I second Allan's move to 48 v; that's usually what we've ended up doing in
> very similar situations, to keep the existing 'monsta' cable.
> Usually they have a dated mod sine inverter, so the upgrade to Outback
>
Hi Jeff,
Its not the voltage but amps, the apollo is only 80amps, and the old MX's you
can push to 70 so no real advantage there.
j
On Oct 20, 2010, at 11:26 AM, Jeff Oldham wrote:
> I think you run a very high risk of smoking the controllers. So rather than
> waste the money, gear and potenti
I second Allan's move to 48 v; that's usually what we've ended up doing in very
similar situations, to keep the existing 'monsta' cable.
Usually they have a dated mod sine inverter, so the upgrade to Outback improves
the system coming and going.
As much as I loved the SW series inverters, their t
Jay,
When we faced this issue recently, we used it as an opportunity to
upgrade to a 48V system. The obsolescence and lack of Schneider
support for the SW4024 contributed to the logic of this approach.
At 48V an MX60 will handle 3200 watts.
I think you run a very high risk of smoking the controllers. So rather than
waste the money, gear and potential fire I would suggest using either a Apollo
HV-80 (200Voc) or the brand new Schneider/Xantrex 600Voc controller - the new
holy grail of controllers! Then rewire the array accordingly.
Hi Ray et all,
The customer has 200' of 4/0 direct buried with a 24v system, and is running
close to 60 amps now, and wants to add 6 more 215 watt modules.
So the issue has been to try and find a way around putting in another wire ie
digging a new trench through his yard.
the client may be will
Hi Jay;
I'd second (3rd, 4th?) everyone else's comments that it probably isn't a good
idea.
I'd add that the diode will eat at least a volt, so that's not good for MPPT,
or balancing.
The one possible way to do this, might be to use a Vanner battery equalizer,
which is designed to split an inco
Mick,
I don't believe Apollo make a T-100, only a T80 and T-80HV.
Allan Sindelar
Allan@positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
This sounds like a job for a single Apollo T-100. If you do that, Jay,
be sure to wire the solar strings with somewhat more than 36 PV cells
for every 12 volts of battery.
Jolliness,
Mick Abraham, Proprietor
www.abrahamsolar.com
Voice: 970-731-4675
On Wed, Oct 20, 2010 at 10:00 AM, Kent Osterb
William,
There are some issues with putting the charge controller at the other
end of the feeder:
1. The advantage of a higher voltage feeder is lost.
2. The voltage drop in the feeder will mess up the charge controller's
absorption and float set points. Say there is only 1% drop in the
deepe
Jay:
Bad idea. The differences in tolerances within components will make one
work harder than the other. They will never balance. Why not put the
charge controllers at the other end of the feeder?
William Miller
At 08:06 AM 10/20/2010, you wrote:
HI All,
Say anyone ever paralleled mx/
hes-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of jay
peltz
Sent: Wednesday, October 20, 2010 8:07 AM
To: RE-wrenches
Subject: [RE-wrenches] paralleling FM-60's
HI All,
Say anyone ever paralleled mx/fm-60's?
I have a unique situation that w
HI All,
Say anyone ever paralleled mx/fm-60's?
I have a unique situation that would be very expensive to pull additional wire
however the existing wire is large enough to need 2 fm-60s'
If I put a diode between them so they don't feed each other any problems that
anyone knows of?
thanks,
jay
15 matches
Mail list logo
