What kind of fans? And are they large? On the far end of the 1300’ run?
Sounds like hat 1300’ foot run is acting like an inductive whip to the radians.
I suggest installing ferrite cores on the dc and ac conductor pairs to
attenuate transient spikes.
Maverick Brown
Off-Grid Solar Commander sin
Hi Nick,
Do you have any rapid shutdown equipment on the arrays? The only charge
controller (Midnite CLassic) that we have ever had that failed with a short
on PV Input, had the Tigo Shutdown boxes on them (TS4-AF). I have always
been curious if that failure mode was due to the Tigo signal someh
Wrenches
Here is a quick tip regarding Outback and the ghost arc fault, this can
apply to either pre-wired or wire on site Radian Power Panels, you will
need to look at the charge controller and first loosen each of the screw
down wire clamps with good light and a clear view slowly pull the wire ba
Aw shucks, Nick, thanks for the compliment.
I am not sure it is justified here because I have not experienced the
failure scenario you have with this system. I must return the compliment
in that it appears your approach to troubleshooting has been very diligent.
Here are a few ideas off the
It’s the gfi breaker that’s tripping right?
There is another possibility. I’ve seen extremely high loads with weak
batteries cause the capacitors in the CC to dump causing the breakers to trip.
One easy fix is to install more wire between the CC and the battery or a
smaller size, within amp
Michael:
This seems like a rather stunning oversight—offering a charge controller
without any means to integrate it into the BOS built by the same
manufacturer.
Just now I laid a 600 VDC rated touch-safe fuse holder over a QOU breaker.
The fuse holder is smaller than the breaker so it would f
It is 600vdc ! Do you want that in a PDP with your 48Vdc and 120/240vac?
I do not believe it to be UL listed for 600vdc in there, and so you are
breaking some pretty big rules here. I do not post much anymore here. Keep
600vdc out of the PDP and for Offgrid we always want high reliability. Just
g
Dave:
With all due respect, I don’t see this as an issue. All of our building
wire is rated at 600 volts. If you segregate your OPCD, work neatly and
bundle your various lead groupings I think it is perfectly safe. If one is
real paranoid, you could rivet in some partitions or more simply, sle
I looked up the CSA record for the XW PDP and it shows:
- Maximum System Voltage (DC) 150V dc
- Maximum Battery System Voltage 62 V dc (48V nominal)
- Maximum System Voltage (AC) 140/280V ac
*Eric Smiley,* Project Manager
e...@vecoop.ca
T: 250.703.6004 <+12507036004>
T: 888.386.0116
Wrenches
Midnite has them so ask your gut to get them on board, I have gotten them
before
Jerry
On Tue, Jan 25, 2022 at 10:08 AM Michael Morningstar <
mjmornings...@gmail.com> wrote:
> Wrenches,
>
> Can anyone direct me to PV input breakers that are rated up to 600VDC that
> would work in a Conex
I’m facing this same issue. In the past we’ve used the old SQD disco’s near
the inverter and fuses in combiners near the array, but they’re big and
expensive.
Anyone used these or see any issue with these:
https://www.industrialcontroldirect.com/dc-disconnect-si16-pel64r-4-p-4080.html?gclid=C
Eric, definitely what I had seen when we offgrid field tested the mppt-
80 in 2010 ! Totally bullet proof charger and the SQD disco shows there are
127 on the west coast for $115 HU361RB. Typically this is outside and
protected where it belongs. It is fine next to the mppt if needed. Just do
not
Wrenches,
I have a customer with a very old 24v off grid pv system. He wants to
upgrade his array, inverter and battery bank. There are no options for
inverter/chargers over 4000 watts in 24v dc. The same goes for lithium
iron batteries. Everything (of higher wattage and battery capacity) seem
HI Aaron,
You could stack multiple 24 Volt inverters to achieve more KW and there
are plenty of 24 V Lithium battery options. (like Signature Solar,
Simpliphi, Discover etc.)
If you do go for converting to 48 Volt then depending on how many amps
of 24V loads you have (how many is it?) - you
Hi Aaron,
You can do DC to DC buck converters, but I would suggest cheap and
efficient 24V, AC power supplies. It's easy to have some spares around and
they can be very reliable.
On Wed, Jan 26, 2022, 5:16 PM Aaron Mandelkorn wrote:
> Wrenches,
>
> I have a customer with a very old 24v off g
Aaron,
It would be helpful to know how many amps are required to
power the 24 volt loads and should we assume the batteries are toast or
nearly so? The brand of inverter?
As Jeff said there are 24V L-ion choices.
Bill
Feather River Solar Electric
Bill Battagin, Owne
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