Hi Jesse,
Good open questionhere's what I think about this problem
We all understand that electrical components have very clear performance
versus cost trade-offs.
I think extreme outside conditions, like those below -40°C temps, simply
lend themselves to a string/central PV topology
The post by Dan from Exeltech got my mind on this.
The warranty is what always makes me stay away from inverters outside. It sure
would make some of my installs easier if I could mount the inverter outside.
Any other inverter brands outside with no problems?
Jesse
Sent from my iPhone
On
Try www.cometenergysystems.com for our solar and generators.
On Mon, Jan 16, 2012 at 1:52 PM, Allan Sindelar <
al...@positiveenergysolar.com> wrote:
> **
>
>
> P.S. Chris Mason, your website doesn't jive...I went to
> www.cometsystems.co and got a site that said "Comet Systems Ltd. is a
> Certif
Jessie,
Dan with Exeltech just gave some good insight to cold weather inverter
capacitor tolerances in the thread "Electrolytic Caps vs. Thin Film Caps".
We had -26C here (Edmonton) today and the next couple of days are looking like
minimum -30C with windchill on top of that. This is p
I have a customer with that Gennie and we auto start it with the Xantrex XW
AGS and without the Honda Remote.
See Type 13. Let me know if you need more details.
Thanks
Maverick
Maverick Brown
BSEET, NABCEP Certified Solar PV Installer R # 091209-26
President & CEO
Maverick Solar Enterprises
Does anyone know who built the alternator on the Makita generator model
5711?
Seems to be a brushless unit and its power quality has gotten bad after
someone flipped the series / parallel switch for a few seconds while it was
running.
There is a t-240 on the line so it was the equivalent of a dea
I am a reformed Honda Engine dealer, last that I knew Honda built NO engines
to run on propane.
It seems that after 400 or so hours they had a bad habit of dropping a valve
from lack of lubrication (or so I ASSume) to the valve train I have seen 3
or 4 engines do that, and I have only seen 4 or 5
All,
I live in an area where -40F is not uncommon and where -60F has been seen.
(northern MN) I have yet to see an inverter that can be placed in locations
like this and not exceed the warranty temp extremes.
Enphase has a cold temp acceptability of -40F last time I checked, and when I
ca
I'm installing a small off grid system that has an existing
generator. It is a Honda EU 6500 converted to run on propane. It is
sweet. I haven't found out yet if the conversion cancelled the warranty.
This would be too small for Allen's current project, but it seems
like a good solution for
Just thinking out loud here, but wondering if it would pay to attach an
insulated back to the panel for the winter months to decrease the
convection. I may need to set up a lab here and find out. . .
Best regards,
Mark Dickson,
NABCEP Certified Solar PV Installer T
Oasis Montana Inc.
87
Don't know, but I may be finding out soon and I will let you know.
Wm
At 01:24 PM 1/16/2012, you wrote:
Any guess or knowledge as to how much load is required to smooth out the
waveform?
Thanks---
- Original Message - From: "William Miller"
To: "RE-wrenches"
Sent: Monday, January 1
On 1/16/2012 1:34 PM, penobscotso...@midmaine.com wrote:
Impressive, Bob, but if one 125 watt panel took 1000 watts of power, what
is it going to take to melt my two 1600 watt arrays, pole mounted,
(theoretically, of course, and at a 65 degree tilt)? Just wondering as
it seems a lot of power
I was able to edit two parameters guided by Xantrex to make the issue go
away. You will need the Xantrex Configuration Tool and the tech note /
software tool from Xantrex. But otherwise its pretty simple to do. Of
course, a firmware update will make the incompatibility go away easier.
Software upg
Impressive, Bob, but if one 125 watt panel took 1000 watts of power, what
is it going to take to melt my two 1600 watt arrays, pole mounted,
(theoretically, of course, and at a 65 degree tilt)? Just wondering as
it seems a lot of power to use in the winter for an off grid or solar
reliant syste
Wow Bob I take it back--that was really cool!
I am trying to help out some of our local weather forecasters that have a
small 50 watt module mounted on top of one of our peaks that runs a weather
station. So, unfortunately this may be a little on the small side of one of
your classics, but n
Any guess or knowledge as to how much load is required to smooth out the
waveform?
Thanks---
- Original Message -
From: "William Miller"
To: "RE-wrenches"
Sent: Monday, January 16, 2012 3:51 PM
Subject: [RE-wrenches] Generator Selection -- XW specific
Friends:
The Kohler RES seri
On 1/16/2012 11:39 AM, David Katz wrote:
Mark,
I believe the Midnite Classic has this feature built in. Check with them.
David Katz
It just snowed up here in Arlington, Washington A.C. and we were just
starting to melt some snow
on a couple of modules on our roof just now with one of our ch
We are currently in Culebra installing a pv system with two Classic 200's.
Its a great controller to set up and install. While snow melt is not
important here, i did notice after using the setup wizard that it mentions
future new features with the snow melt function being one of those
mentioned. Th
Friends:
The Kohler RES series generator has a bug when used in conjunction with the
Xantrex XW inverters: The power waveform of the RES generators is
distorted under no-load conditions. The result is that the XW will not
connect. A fix is pending but a new firmware release date is not yet
We have a systems with over 200 microinverters installed, and they work
great. Enphase has a fair labor reimbursement policy for warranty swaps.
While we have swapped a fair number of micros in the past, problems are
becoming fewer and farther between, and we are compensated for this
work.
I wo
I've found the Zephyr Power vents to be a little undersized in larger
batteries with arrays over 1000 watts. Still get that smell in the room
outside of the battery box, though its not explosive. That was with the
12 v model. I wouldn't mind seeing someone make a similar vent plumbed
to larg
Recently, I was asked, how big is too big- to use micro inverters vs a string
inverter for a small commercial system.
With my own experience, we did a 10kW system and the owner was ecstatic with
the level of detail and the reporting, as over the last couple of years, we had
a few inverters that
Mark,
I believe the Midnite Classic has this feature built in. Check with them.
David Katz
From: Mark Dickson [mailto:m...@oasismontana.com]
Sent: Monday, January 16, 2012 10:00 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] Shedding ice
I recall a conversation a while back about the possibility of
John,
Thanks for the follow-up on this subject. I'd like to change the example
to show the ventilation required rather than the hydrogen liberated.
Consider a 48-volt bank of L16RE-B batteries: that's 24 cells of 370
amphours. Using the 14 cc/hr/Ah/cell H2 rate for equalizing gives a
total h
Hi Mark;
Robin Gudgel at Midnite was talking about a setting on the Classic that
could do that. I'm not sure how far they went with the concept, but it
definitely is beyond mere theory. I'd check with them, and see where
they were at with that.
Ray Walters
On 1/16/2012 11:00 AM, Mark Dick
I recall a conversation a while back about the possibility of "reversing"
the current in a solar module to increase the cell temp enough to shed
ice/rime. To follow-up, has anybody been successful at this? I am
guessing, if so, it would entail, removal of diodes, increasing PV and
battery capacit
Wrenches,
I very much appreciate this ongoing thread, thank you.
This actually feels like one of those "damned if you do, damned if
you don't" scenarios. The system is six years old, poorly designed
and installed. Two SW5548s, most likely chosen in order to run a 2H
Chris,
It would be very helpful if you quote "run hours" rather than "years".
For example we have seen:
. Inexpensive small generators (generally not worth rebuilding) 300
to 500 hours. These are gasoline models of various brands and Generac LP gas
models. 3kW to 10kW in size typi
The Generac QT and commercial units do not come with an ATS, you can buy
just the bare machine or have a complete solution designed for your load.
The Generac residential machines are good machines, as long as you
understand the intended use. We install lots of them. They are only
designed to be u
From: Marco Mangelsdorf [mailto:ma...@pvthawaii.com]
Sent: Sunday, January 15, 2012 07:07 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] BPS warranty claims
My old, usual channels to get warranty coverage from BP Solar appear to have
dried up with messages like this.
Dear Customer,
Customer Se
If the water cooled models are similar to the <=20kW air cooled models,
the ATS is not integrated, but there is a controller that does not allow
a two wire generator start circuit out of the box. However, there is a
Generac rep named Bob Cramer that supplied my with a wire kit and
instructions to b
Allan,
I have heard from a generator sales / service friend that the water cooled
Generac gennies (I believe 20 kW and up) are totally different animals
than the standard Generac gennies. From personal experience and
word-of-mouth I wouldn't touch the standard generac machines, but the
water cooled
Allan,
First, I'm a Generac sales & service dealer so I have an obvious bias.
The Olympian brand are made by Generac for caterpillar.
Anything under 20KW will be residential and will be designed for short
runs. The Generac 6KW Ecogen is very well suited for your needs, as it is
built for long run
33 matches
Mail list logo
