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<div class="moz-cite-prefix"><br>
You might want to try one of those lights up where the inverter is
and see if it flickers up there when a load at the other<br>
end is turned on... Use walkie-talkies maybe ?<br>
<br>
Are you sure it's not just surge regulation voltage response time
of the inverter itself ?<br>
<br>
boB<br>
<br>
<br>
<br>
On 2/2/2014 4:01 PM, Chris Mason wrote:<br>
</div>
<blockquote
cite="mid:CAG6C1qkYKpacKtjc2PEALuDPcffGjsERrsgV7DT=4hgrLLfRNg@mail.gmail.com"
type="cite">
<div dir="ltr">You should rent or borrow a power quality analyzer
to look at the phase angles and harmonic distortion throughout
the day. A scope will also help to allow you to look at the
waveform of the inverter produced electricity. You need to
properly identify the cause of the problem before you invest in
any equipment.
<div>
<br>
<div>Resistive loads will not change phase angles. Only
capacitive or inductive loads can do that. However, LEDs
work fine in commercial installations where 0.8 power
factors are common so I doubt that is your problem.</div>
<div>It is more likely that badly formed waveforms cause
switching issues for the LED's driver electronics. Filtering
may help. </div>
<div><br>
<div>Line to Line capacitors are probably not going to help,
but Line to Earth capacitors could act as a high pass
filter to shunt noise to ground.</div>
</div>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Sun, Feb 2, 2014 at 4:39 PM, Troy
Harvey <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:taharvey@heliocentric.org" target="_blank">taharvey@heliocentric.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
<div><span
style="border-collapse:separate;text-align:-webkit-auto;text-indent:0px;border-spacing:0px">
<div
style="line-height:normal;letter-spacing:normal;font-variant:normal;text-transform:none;white-space:normal;word-wrap:break-word;word-spacing:0px"><span
style="font-size:11px"><br>
</span></div>
<div
style="line-height:normal;letter-spacing:normal;font-variant:normal;text-transform:none;white-space:normal;word-wrap:break-word;word-spacing:0px"><span
style="font-size:11px"><br>
</span></div>
<div style="word-wrap:break-word"><span
style="font-size:11px">We've got a PV system that
has long lines from the inverters to the house
(1000 ft or so). While the wires
are properly sized (2x350MCMs), it inherently has
a lot of inductance due to the line-length. What
We are noticing is that dimmable LED lights
flicker anytime a new load turned on, even if that
load is purely resistive and the overall current
draw is small (20 amps or so). What I "think" is
happening is the LED dimmer circuits get their cue
from phase delays, and that the inductance of the
line length causes some phase jitter everytime a
load is applied - thus causing flicker.</span></div>
<div style="word-wrap:break-word"><span
style="font-size:11px"><br>
</span></div>
<div style="word-wrap:break-word"><span
style="font-size:11px">Has anyone dealt with this
issue successfully (other than switching
to incandescent lights)? Would a static capacitor
bank at the house do the trick, or do we need some
type of active PFC? And if static did you have any
issues with constant power draw from the
capacitors?</span></div>
<span class="HOEnZb"><font color="#888888">
<div
style="line-height:normal;letter-spacing:normal;font-variant:normal;text-transform:none;white-space:normal;word-wrap:break-word;word-spacing:0px"><span
style="font-size:11px"><br>
</span></div>
<div
style="line-height:normal;letter-spacing:normal;font-variant:normal;text-transform:none;white-space:normal;word-wrap:break-word;word-spacing:0px"><span
style="font-size:11px"><br>
<br>
Troy Harvey<br>
---------------------<br>
Heliocentric<br>
<br>
</span></div>
</font></span></span></div>
</div>
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<div><br>
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-- <br>
Chris Mason
<div>President, Comet Systems Ltd</div>
<div><a moz-do-not-send="true"
href="http://www.cometenergysystems.com" target="_blank">www.cometenergysystems.com</a></div>
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