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</head><body bgcolor="#FFFFFF" text="#000000"><span>Hey Wrenches,<br>
<br>
Anyone have success using soft-start modules on well and sewage pumps to
lower the surge for off-grid inverters?<br>
<br>
The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore Grinder
Pump - LSG200 series - single phase 230 Vac.<br>
<br>
Thanks!<br>
<br>
Jeff<br>
<br>
</span><br>
<span><span>~~~~~~~~~~~<br>
</span>
</span>
<div class="moz-signature">
<span>Jeff Clearwater</span><span><span><br>
</span>Village Power Design<br>
</span><span><span><span><a
href="https://www.linkedin.com/in/jeff-clearwater-0622a312/">linkedin</a>
</span></span></span><br>
<span><span><a href="http://www.villagepowerdesign.com">www.villagepowerdesign.com</a></span><br>
cell - <span style="display: inline; font-size: inherit; padding: 0px;
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__postbox-detected-content="__postbox-detected-phone">413-559-9763<br>
~~~~~~~~~~~~~~~~~~~~~~~</span></span></div>
<span><br>
Jeff Clearwater wrote on 7/26/19 6:32 AM:</span><br>
<br>
<blockquote type="cite"
cite="mid:901272ea-1752-e1eb-d6bd-a968f5d1bfd7@villagepowerdesign.com">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<span><span style="font-weight: bold;">Thanks Ray and Jerry</span><span
style="font-weight: bold;">,</span><span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;">Great to hear from you both
with your years of combined experi</span><span style="font-weight:
bold;">ence :)</span><br>
<br>
<span style="font-weight: bold;">So yes looking at the 5 sec has me
switching back to a trusty Radian - <span style="text-decoration:
underline;">even then from what you are say</span></span><span
style="text-decoration: underline;"><span style="font-weight: bold;">ing
it may not work.</span></span><br>
<br>
And you are right Ray - Outback is careful to rate the "overload
capability" in KVA rather than KW due most likely to voltage sag of
course.<br>
<br>
<span style="font-weight: bold;">So this 53 LRA 2 HP motor - if I can
only trust the 5 second (50 A) might not start - especially with other
loads on the system?</span><br>
<br>
<span style="font-weight: bold;">RAD</span><span style="font-weight:
bold;">IA</span><span style="font-weight: bold;">N SURGE RATINGS:</span><br>
<br>
<span style="font-weight: bold;">Maximum Output Current</span> <br>
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC<br>
100 ms RMS 70.7 Amps AC at 240 VAC<br>
<br>
<span style="font-weight: bold;">Overload Capability</span><br>
100 ms surge 16.97 kVa<br>
5 seconds 12 kVa<br>
30 minute 9 kVa<br>
<br>
<span style="font-weight: bold;">Other's </span><span
style="font-weight: bold;">experience with 2 HP sewage pump or well pump
motors on a Radian?</span><span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;">Thanks!</span><span
style="font-weight: bold;"><br>
</span><span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;">Jeff</span><br>
<br>
<br>
Ray wrote on 7/25/19 5:48 PM:</span><br>
<br>
<blockquote type="cite"
cite="mid:43f52ddf-b3f2-87b6-df21-b7bc31fec861@solarray.com"><meta
http-equiv="Content-Type" content="text/html; charset=utf-8">
<p>I only look at the 5 sec and 30 sec surge ratings to get an idea
what an inverter can really do in the real world. All those
millisecond ratings/ in rush current specs won't get a pump or
motor started, and will basically just get you into trouble. The
reason they have those ratings in amps and not watts, is that the
voltage craters during that 100mS surge.<br>
</p>
<p>I can't tell you how many times we tried to start a pump,
compressor, or large table saw, and the inverter just shut off,
even though the "in rush current" was within the theoretical
inverter capacity. Actual Wrench list testimonials are much more
valuable than those arcane specs.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 7/25/19 5:15 PM, Jeff Clearwater
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f4056caf-f4ac-2883-1289-f8012fbdb9e0@villagepowerdesign.com"><meta
http-equiv="Content-Type" content="text/html; charset=utf-8">
<span><span style="font-weight: bold;">Hey There Wrenches,</span><br>
<br>
So be advised that after a little research the SW dual stack
will NOT double the surge ratings of a single SW.<br>
<br>
But that brings me to my second question:<br>
<span style="font-weight: bold;"><br>
</span><span style="font-weight: bold;">What inverter surge
rating should one refer to when looking at maximum Inrush or
LRA - 1ms? 100ms? 1 se</span><span style="font-weight:
bold;">c?</span><br>
<br>
<span style="font-weight: bold;">Your</span><span
style="font-weight: bold;"> engineering wisdom welcomed!</span><br>
<br>
Thanks,<br>
<br>
Jeff<br>
<br>
<br>
<br>
Jeff Clearwater wrote on 7/23/19 8:27 PM:</span><br>
<br>
<blockquote type="cite"
cite="mid:98e033f1-d95b-e47c-57f1-64c6696a9309@villagepowerdesign.com"><meta
http-equiv="Content-Type" content="text/html; charset=utf-8">
<span>Thanks for the tip! I'll check the firmware.<br>
<br>
Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:</span><br>
<br>
<blockquote type="cite"
cite="mid:405087905f6db64e06e6d67beb2675d1@127.0.0.1"><meta
http-equiv="content-type" content="text/html; charset=utf-8">
<p>Hi Jeff,</p>
<p> </p>
<p>I am not going to guess if this will work, it should. I
use XW's because they start anything I have come across.</p>
<p>If you do this, make sure but SW's have the latest and same
firmware. There were problems with stacked SW's early on in
their development.</p>
<pre><strong><span>Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
<p>On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater <a
class="moz-txt-link-rfc2396E" href="mailto:jeffc@villagepowerdesign.com"
moz-do-not-send="true"><jeffc@villagepowerdesign.com></a>
wrote:</p>
<blockquote type="cite" style="padding-left:5px;
border-left:#1010ff 2px solid; margin-left:5px; width:100%"><!-- html ignored --><!-- head ignored -->
<!-- meta ignored -->Hey Esteemed Wrenches,<br>
<br>
So I recently built a power trailer with a single 4 KW
(4048) Schneider SW for a client with a moderate cabin
lifestyle.<br>
<br>
But he lives on a high hill and even though his 2 HP
Macerator is only rated at 15 amps continuous that baby
starts up with a whopping kick - probably close to or at
it's 53 Amps Locked Rotor rating.<br>
<br>
<span style="font-weight: bold;">The SW has the following
surge capability:</span><br>
<br>
<span><span style="font-weight: bold;">SW 4048 Rated</span><span
style="font-weight: bold;"> @ 240 Volts:</span><br>
Continuous <span class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px;">- <span
class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px;"><span
class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px;">15</span>.2</span></span>
Amps 3700 Watts<br>
<span class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px; color: #000000;">30
Minutes - 18.3</span> Amps 4400 Watts<br>
<span class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px;">5 Secs</span> - 29.2
Amps 7000 Watts<br>
<span class="__postbox-detected-content
__postbox-detected-date" style="display: inline;
font-size: inherit; padding: 0px;">Max (100ms?) - 41</span>
Amps - 9840 Watts<br>
<br>
Can I be confidant that 2 stacked SWs will start this
baby?<br>
<br>
<span style="font-weight: bold;">Any experience with
similar macerators - or simply educated guesses</span><span
style="font-weight: bold;">?</span><span style="font-weight: bold;"><br>
</span><br>
Thanks!<br>
<br>
Jeff<br>
<br>
</span></blockquote>
<div>-- <br>
<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<br>
<div class="moz-signature">-- <br><span>~~~~~~~~~~~<br>
</span>
<div class="moz-signature">
<span>Jeff Clearwater</span><span><span><br>
</span>Village Power Design<br>
</span><span><span><span><a
href="https://www.linkedin.com/in/jeff-clearwater-0622a312/">linkedin</a>
</span></span></span><br>
<span><span><a href="http://www.villagepowerdesign.com">www.villagepowerdesign.com</a></span><br>
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