Hi Mark
Is this off grid or on?
Jay
> On Jun 12, 2020, at 7:09 PM, Mark Frye wrote:
>
>
> I see.
>
> What you say about the frequency shift being slow makes me again doubt the
> value of even using it in my application.
>
> I have a controller that can regulate the AC dump load. That
The slow response on the frequency shift is for the XW+ only, and mine is
an early model with no firmware updates since new. The XW Pro's main
difference from the XW+ besides UL1741-SA is a much faster processor. I've
heard that the frequency shift works quite well now, especially with
UL1741-SA
I see.
What you say about the frequency shift being slow makes me again doubt
the value of even using it in my application.
I have a controller that can regulate the AC dump load. That same
controller has a high limit switch which I could use to cut the AC feed
to the GT inverters. But then
I have a relay on the XW+ Aux and also frequency shift which is usually
slower, so the relay usually cuts out first. I also have a DC coupled array
feeding the system.
Brad
On Fri, Jun 12, 2020 at 4:34 PM Mark Frye wrote:
> Yes an elite group within an elite group.
>
> So the SB240 does not
Yes an elite group within an elite group.
So the SB240 does not have frequency shift /wattage control. How are you
implementing charge control in stand alone mode?
On 6/12/2020 4:28 PM, Bradley Bassett wrote:
Wow! Someone else with SMA SB240's, I have 12 of them that I've AC
coupled to an
Wow! Someone else with SMA SB240's, I have 12 of them that I've AC coupled
to an XW+5548. They are very solid performers.
Brad
AEE Solar
On Fri, Jun 12, 2020 at 3:39 PM Mark Frye wrote:
> Hello,
>
> I have a small array of 8 - SMA SB240 microinverters on the roof. Peak
> power out of the array
Hello,
I have a small array of 8 - SMA SB240 microinverters on the roof. Peak
power out of the array has never exceeded 1800 W.
I am adding a Magnum MS-PAE 4448 with a 315 AH flooded Lead Calcium
battery bank.
Cheers
On 6/12/2020 12:31 PM, Chris Schaefer wrote:
G'Day Mark,
Which grid
James, Wrenches
Traditionally we oy use black + and white - for a grounded PC system enen
with RSD, Systems that are not grounded are red + and black - which can be
confusing. White is associated with neutral and connected to earth, black
hot and red hot and we always use either USE-ll or PV wire,
I take it he will not allow you to tape the wiring with white tape and
put a warning sign on the JB? You have to do what he wants but I feel your
pain. Good Luck! I would think a good electrician would measure first:)
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
Sun Action Tracker. We have installed dozens.
42 x 72-cell modules
Call Pete Linscomb at 210-302-2141. Please do tell him I sent him to you.
Scot Arey
Solar CenTex
-Original Message-
From: RE-wrenches On Behalf Of Jay
Sent: Friday, June 12, 2020 12:11 PM
To: RE-wrenches
Subject:
Hello Wrenches,
I have an off-grid install where I was recently red-tagged by the state
inspector. System is 24 volt with battery, Magnum inverters, some Magnum
charge controllers, and a Morningstar charge controller. It is permitted
under NEC 2017.
One of the inspectors issues was that my DC-
G'Day Mark,
Which grid tied inverter are you attempting to AC couple with. I
apologize if you already called it out in the thread.
Christopher
On Fri, Jun 12, 2020 at 2:01 PM Jay wrote:
> Hi Mark,
>
> Agreed that diversion is the way to go.
> As 4v above absorb volts is completely unworkable.
Hi all
I have a client who’s pretty talented.
He wants to build his own dual axis solar tracker, in the 8-12 module range.
I’m asking if anyone know of plans or where to get designs. I’m not asking for
anyone to give free consultation help.
Thanks
Jay
Peltz power.
Hi Mark,
Agreed that diversion is the way to go.
As 4v above absorb volts is completely unworkable.
But I’m not sure that I agree about .5 hz will do anything. The new rule 21
inverters go off line at 64 hz. And there is a type of tapering based on hz
shift, but it won’t shut off a new gt
Also keep in mind that when AC coupling with legacy PV inverters without
frequency-Watt capability, the battery based inverter will have reduced
ability to regulate the battery charge.
A modern GT inverter will give
you faster and more accurate charging. The older GT's, may not be good
enough
Thanks Jay,
I talked again with Magnum.
I have the latest Rev 6.1 MS-PAE 4448 so the exact implementation has
changed from that described in AN002, 5/10. The current Rev. has changes
designed to improve interaction with the GT inverters. I didn't really
get to the bottom of that. But the
Peter,
This may be of interest to anyone looking into cheap Li battery products. For 7
years we have been dealing in Li batteries as a retailer, installer,
distributor and importer. Not a single day goes by that I don’t receive 1 or
more emails from a Li-ion battery company in China. I’m not
Hi Mark
I found this which might be of help.
https://www.magnum-dimensions.com/sites/default/files/MagArchive/AN-0002-AC-Coupling-Rev-5-10.pdf
Jay
Peltz power.
> On Jun 12, 2020, at 6:59 AM, Mark Frye wrote:
>
> Looking for confirmation from Wrenches who know Magnum inverters:
>
> -
Looking for confirmation from Wrenches who know Magnum inverters:
- MS-PAE
-ME-RC
- Frequency shift enabled (battery type "Custom")
- AC coupled PV inverters w/o frequency shift capability
Function:
At Absorb voltage frequency shift is zero, at Absorb voltage + 6 V,
shift is 0.5 Hz (in
Zeke Yewdall who does a lot of off-grid installations and teaches at SEI
has worked with LI batteries from a supplier who works with electric cars
like this before so I reached out to him. I know he had a lot of problems
with the BMS because it wasn't designed for use with solar and the support
he
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