A bit of a follow up on a thread of about three months ago where we had
taken over an orphaned bank of Concorde 12V VRLA, 10 parallel banks of 4.
Thanks for all the input on this!
Efforts to revive via fixed amperage charging have not proven successful.
These batteries had been sorely abused.
August,
Probably the best simple explanation is in "Connecting to the Grid",
published by the Interstate Renewable Energy Council and the North Carolina
Solar Center. It is in its 6th edition. I wrote the original version of the
document over 15 years ago.
Bill.
Quote from Document:
"Grid-tied
Hi August
I felt I was a little to cryptic in my answer, so here is a longer answer.
The inverter always tries to increase the frequency if it is connected to a
grid, it could never speed up all those billions of tons of rotating equipment,
so the frequency stays the same. If two inverters se
Hello Joel --
Well, you can be assured that both NREL and IREC are on your side. They
were very convincing about dropping UEDS requirements at this seminar.
Funny how utilities can require UEDSs, but none of them have the
procedures, personnel or infrastructure to actually *use* them.
Imagin
Jay,
You might want to consider a multi-purpose tool:
http://solarprofessional.com/article/?file=SP2_3_pg20_TheWire_5&search=
Best, David
On 2/13/10 4:57 PM, "jay peltz" wrote:
> I'm in the market for a Tyco connector tool .
>
>
> (I already have the MC tool)
>
> Any recommendations ?
>
I'm in the market for a Tyco connector tool .
(I already have the MC tool)
Any recommendations ?
thanks,
jay
peltz power
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Hello Dan,
Many of us have worked hard to eliminate the UEDS requirement.
Unfortunately, each utility and building & planning jurisdiction will have
to be convinced by local contractors. Some will have to be re-convinced when
the next authority gets into power. Please, someone tell me that I a
I am inclined to agree with that. We are in the process of revising our
recommendations on equalizing. It perhaps made sense to do so every month or
so 20 years ago, but I am wondering if that really is a good idea with the
current state of battery chargers and controllers.
...
Sounds like:
A) the batteries are getting old, and are not paralleled properly.
B) The desulphators aren't that great. I have some pics of one that completely
short circuited, melted, and caught on fire. I would never put those in, myself.
C) I no longer recommend monthly EQing, but I think its a
We have retired the Hydrometer and now use only refractometer. We have used
them for 4+ years now.
Our clients that do their own battery maint. Are so impressed that we have sold
quite a few to that crowd too.
They are safer and less intrusive: you only use a drop of electrolyte.
Faster to
Have any of us here ever heard of a "world renowned battery guru"? You have to
wonder why, if they are world renowned, they have to do home shows.
Refractometers have been used quite commonly in labs, but those are in the $500
an up range. Some pretty decent ones for home use are in the $75-$150
--- On Sat, 2/13/10, August Goers wrote:
From: August Goers
Subject: [RE-wrenches] anti islanding?
To: "RE-wrenches"
Date: Saturday, February 13, 2010, 10:29 AM
Hi Wrenches,
Does anyone know where I can go to read about general
information on how grid tied inver anti islanding works? I
Hello Wrenches --
Did anyone else here attend the online conference last week regarding
UEDS , held by Solar ABCs?
I would be very interested to hear your thoughts, as I am writing an
article regarding this topic. Contact me off-list, or on-list if you
think this is appropriate here and want
Dan,
You are on the right track. I've been off the Desulphators for years because I
had so many systems without them that were lasting years longer than predicted
between battery swap outs. I don't know about refractometer vs hydrometer. I
use and trust a "glass in glass" hydrometer.
Are these
Hi
I hope you get an expert, but here is what I understand. Of course if the grid
goes to zero it is easy to break under voltage. But if the grid has a motor
particularly a synchronous motor, it can generate a sine wave, so the inverter
always trys to increase the speed or frequency of the si
Hi Wrenches,
Does anyone know where I can go to read about general information on how grid
tied inver anti islanding works? I'd like to be able to describe this in better
detail to our tech-savvy clients.
Thanks,
August
August Goers
Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.15
Dan,
There are benefits and disadvantages to almost everything in this world.
Are you aware that the optical refractometer _automatically_ compensates for
temperature, something that I have not seen on any hydrometer?
The amount of electrolyte required with the refractometer is negligible
compa
I'm confoosed.. . I got a call from an old client complaining that their trace meter was wacky... seems it always read like 80% or something -- never reset?.. (48V -- 4 strings of UL16 -- 5 years old -- Off Grid). I asked about the last time they equalized, and they proudly reported that they hadn
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