<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.6470" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV>Another $.02.... </DIV>
<DIV> </DIV>
<DIV> I have 2, FX3524's and 35 KWhrs of
HUP's behind them....just cleaned and torqued the terminals/cables. I
run 6-7 brands, sizes, styles of LEDS and some of them of them
flicker while, in my case, the convection oven is running. It quickly
pulses (~10-20 times/second) to maintain a temperature. Fridge is DC.
The less expensive off-brand LEDs flicker, the big name brands don't.</DIV>
<DIV> </DIV>
<DIV>Bill</DIV>
<DIV> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jerrysgarage01@gmail.com href="mailto:jerrysgarage01@gmail.com">Jerry
Shafer</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 06, 2014 6:21
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] Flickering LED
lights on and Outback Dual 7248VFX system</DIV>
<DIV><BR></DIV>
<DIV dir=ltr>
<DIV>I have had this same thing happen with a off grid application using SMA
SI's it rooted back to programming one inverter was going to sleep and under
some loads the lights would flicker and they were over the dinning room table
and suspended from a 16 foot ceiling so it lit up the entire room. I know this
has a different inverter system but I would look close at the
programming LED's use such a low load and the drivers take a second to
activate. Did you connect a DVOM and watch the volts better yet a
scope<BR></DIV>Jerry <BR></DIV>
<DIV class=gmail_extra><BR><BR>
<DIV class=gmail_quote>On Mon, Jan 6, 2014 at 5:56 PM, Exeltech <SPAN
dir=ltr><<A href="mailto:exeltech@yahoo.com"
target=_blank>exeltech@yahoo.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">There
may also be a technical aspect of the dimmer that's adding to the flicker,
depending on the type of dimmer(s) in use.<BR><BR>Some dimmers use a device
called a "silicon-controlled rectifier" .. or "SCR". They allow only
half of the sine wave to pass. Half-wave power wasn't very noticeable
when used with incandescent lamps due to the continued "glow" persistence of
the filament. However, LEDs react [essentially] immediately, and the
flicker is very apparent. Final thought .. compressors use the most
energy during the compression stroke. Actual current draw varies with
each stroke of the piston. Check not only the battery connections, but
look to see if the loads are on the same circuits as the lamps. If in
fact the inverter AC output voltage IS dropping due to DC-side issues .. and
the large AC loads happen to share the same circuit as the lamps .. this
would make any flicker that much
worse.<BR><BR><BR>Dan<BR><BR><BR>--------------------------------------------<BR>
<DIV class=im>On Mon, 1/6/14, <A
href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</A> <<A
href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</A>>
wrote:<BR><BR> Subject: Re: [RE-wrenches] Flickering LED lights on and
Outback Dual 7248 VFX system<BR></DIV> To: "RE-wrenches" <<A
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</A>><BR> Date:
Monday, January 6, 2014, 6:25 PM<BR>
<DIV class=HOEnZb>
<DIV class=h5><BR><BR>Only during Big load surges ?<BR><BR>Could it be
current limiting and because LEDs are so fast on and off, you notice the
drop in momentary voltage ?<BR><BR>Any inverter might do that under the
right conditions.<BR><BR>Just a thought.<BR><BR>boB<BR><BR><BR><BR><BR>On
1/6/2014 3:45 PM, Dan Fink wrote:<BR>> I consider LED flicker as very
common when a fridge starts up, but NOT while it's running. Both dimmed and
not dimmed LEDs. I see flicker more often on systems with smaller (or aging)
battery systems of course. The only particular appliance I have found
causing constant flicker here and with my clients is a particular brand of
laser printer. And also a subwoofer on the stereo (light show!)....a
different subwoofer brand solved that problem. Go figure, I have no idea
why. Most of my inverters are by Magnum. I have not found much difference
with LED brands or dimmer brands.<BR>> I can see how this could be a
problem for your client, Kirpal. None of mine seem to mind a startup
flicker, but if its constant that's a big problem. I wish I had an answer
for you, but I hope that providing this information helps others. CFLs do
not give me the same problem, but of course have their own other
problems.<BR>><BR>> Dan Fink,<BR>> Executive Director;<BR>>
Otherpower<BR>> Buckville Energy Consulting<BR>> Buckville
Publications LLC<BR>> NABCEP / IREC accredited Continuing Education
Providers<BR>> <A href="tel:970.672.4342"
value="+19706724342">970.672.4342</A><BR>><BR>><BR>><BR>><BR>>
On Mon, Jan 6, 2014 at 2:48 PM, Jay Peltz <<A
href="mailto:jay@asis.com">jay@asis.com</A>> wrote:<BR>><BR>>
Dimmers are super specific to light brand/type. You'll
have to do the research<BR>><BR>> For now swapping to
regular switches should work<BR>><BR>>
Jay<BR>><BR><BR>_______________________________________________<BR>List
sponsored by Home Power magazine<BR><BR>List Address: <A
href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A><BR><BR>Change
email address & settings:<BR><A
href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org"
target=_blank>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</A><BR><BR>List-Archive:
<A href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org"
target=_blank>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</A><BR><BR>List
rules & etiquette:<BR><A href="http://www.re-wrenches.org/etiquette.htm"
target=_blank>www.re-wrenches.org/etiquette.htm</A><BR><BR>Check out
participant bios:<BR><A href="http://www.members.re-wrenches.org"
target=_blank>www.members.re-wrenches.org</A><BR><BR></DIV></DIV></BLOCKQUOTE></DIV><BR></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>List sponsored by
Home Power magazine<BR><BR>List Address:
RE-wrenches@lists.re-wrenches.org<BR><BR>Change email address &
settings:<BR>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR><BR>List-Archive:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<BR><BR>List
rules & etiquette:<BR>www.re-wrenches.org/etiquette.htm<BR><BR>Check out
participant
bios:<BR>www.members.re-wrenches.org<BR><BR></BLOCKQUOTE></BODY></HTML>