I think if we started over fresh with our lead acid battery system
designs, we would find we should have the same Battery management system
requirements that you have mentioned. Those are all problems that
plague lead acid as well.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installe
Hi:
When we developed the AC coupling capability of the XW's we of course
looked at what happens when the AC coupled power is larger than the XW
power.
As William points out as long as the loads are larger than what the AC
coupled inverter can supply, then there is no problem. However, this o
As I understand it, "backfed" referred to the source of energization. Current
flow alternates both ways at line frequency regardless of the direction of
power flow. The reason for marking "line" and "load" is because the source of
energization remains powered when the device is turned off. In th
Also 705.12(D)5 in 2011:
(5) Suitable for Backfeed. Circuit breakers, if backfed, shall be suitable
for such operation.
FPN: Circuit breakers that are marked "Line" and "Load" have been evaluated
only in the direction marked. Circuit breakers without "Line" and "Load"
have been evaluated in both
Try 690.64(B)5, FPN: (2008 NEC)
(5) Suitable for Backfeed. Circuit breakers, if backfed, shall be suitable
for such operation.
FPN: Circuit breakers that are marked "Line" and "Load" have been evaluated
only in the direction marked. Circuit breakers without "Line" and "Load"
have been evaluated i
Wrenchers,
One of my associates was asked by an inspector to prove that the QO breaker is
rated for back-feeding.I seem to remember the code stating that as long as
the breaker does not state that it is only rated for one direction then it is
ok to back feed.
Anyone have a reference to the
Jarmo,
I must say I disagree with most of what you have said. In the EV DIY industry,
there are a growing number of conversions using LFP battery banks without any
BMS or EMS at all. These pioneers are risking there multi-thousand banks
because they have learned something about these cells. The
ERROR….I meant to say ….reach 3.55 volts per cell.
On Sep 16, 2014, at 9:43 AM, Larry Crutcher, Starlight Solar Power Systems
wrote:
Mac,
Li-ion batteries are connected the same as any other deep cycle, positive and
negative terminals. The Battery management is done actively on each cell. T
Mac,
Li-ion batteries are connected the same as any other deep cycle, positive and
negative terminals. The Battery management is done actively on each cell. The
brand that we sell has a CPU that receives serial data from the string of
“sense” boards that are monitoring temperature and voltage p
We’ve used Ecofasten ECO-65 successfully on both SIP roofs and membrane roofs.
They’re expensive and a bit labor intensive but it’s a good solution. They
have metal flashing for asphalt roofs and you can also use membrane patches on
pretty much any type of membrane or rolled asphalt roof.
htt
Hello wrenches,
How do you get PV power into the battery management system? Are there PV
application specific battery management systems, or are these AC loads?
Thanks
On Tue, Sep 16, 2014 at 12:31 AM, William Miller
wrote:
> Friends:
>
>
>
> Here are the specific batteries I am looking at:
>
We've used the Eco-Fasten base plates on a variety of flat roofs including
rolled asphaltic and TPO with appropriate flashings based on the roof type.
We've attached in a variety of ways including metal roofs and direct to
wood decking, but plywood, not OSB. And, we've done this with up to 160 mph
HI Lars,
you don't mention the type of roof cover, guessing comp shingle?
have you looked at the DPW easy feet?
A slight modification is to use flat flashing first, then anchor the easy feet
through the flashing
designed for exactly the roof you have
jay
peltz power
On Sep 15, 2014, at 9:20 P
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