William, you are correct that it is a little harder on the capacitor
due to ripple current caused by
the little jumps in waveform. This is where the series inductance will
help the filtering a bit too.
The added L will add that bit of needed impedance to complete the L-C
filter.
The SW was sure a great inverter and has stood the test of time in many
applications.
I think it if had a fourth and smaller section, it could have been
perfect but I would say
it was heavy enough for even two people to lift.
BTW, Heart Akerson passed away recently.
He was a good man.
🌜boB🌛
On 9/9/2023 10:13 AM, William Miller via RE-wrenches wrote:
Friends:
I had an experience with a more modern inverter system creating
harmonic distortion on the output waveform during generator run. That
issue was documented here
<https://millersolar.com/MillerSolar/case_studies/25_GFI%20Tripping/GFI_Tripping.html>.
The inverter system is Outback Radian.
A few weeks ago I received a call from an individual that was
researching a similar problem. He called me to tell me he had
resolved his harmonic distortion problem by installing a 20 microfarad
capacitor in the circuit that was having problems.
I have read here about adding a capacitor to solve distortion
problems. The same client is still having problems running a modern
oven. I ordered a 20 microfarad, non-polarized capacitor rated at 440
VAC. I will let you know if this provides any resolution.
William Miller
Miller Solar
17395 Oak Road, Atascadero, CA 93422
805-438-5600
www.millersolar.com <http://www.millersolar.com/>
CA Lic. 773985
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray via RE-wrenches
*Sent:* Friday, September 8, 2023 10:12 PM
*To:* re-wrenches@lists.re-wrenches.org
*Cc:* Ray
*Subject:* Re: [RE-wrenches] Power conditioner for Trace inverter
That's about what to expect from the Psuedo Sine Wave that the SWs put
out. They shortened the list of problem appliances significantly
compared to "mod sine", but its a stepped pyramid wave. Later
inverters (Outback, Magnum) were step waves too, but just more steps,
which translates to less trouble.
Trace SW waveform
I have cured the "washer not running on the SW" once, by adding a
capacitor to the circuit. I can't recommend it 100% from a safety
stand point, but it worked for us. Some body else chime in on the
possible dangers? Cap blowing, fires, shorts? Definitely needs to be
in a metal enclosure.
I think its either get a different washer or get a different inverter.
At 22+ years, its slowly reaching the time to retire those old SWs.
Ray Walters
Remote Solar
303 505-8760
On 9/8/23 2:53 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
I would do a load test on the inverter. It may have a damaged FET
or two. They do not last forever! Good Luck
*Dave Angelini Offgrid Solar*
*"we go where powerlines don't"*
*<http://members.sti.net/offgridsolar/>https://offgridsolar1.com/
<https://offgridsolar1.com/><http://members.sti.net/offgridsolar/>*
*e-mail offgridso...@sti.net*
*text 209 813 0060*
On 2023-09-08 12:30 pm, Darryl Thayer via RE-wrenches wrote:
New washing machines are small loads 400 Watts about.
On Fri, Sep 8, 2023, 2:27 PM Darryl Thayer
<darylsol...@gmail.com> wrote:
I once used a ferro-resonant transformer to clean up a
sine wave. You have to know the power.
On Fri, Sep 8, 2023, 1:59 PM Chris Daum via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Hi folks:
I have a fellow with a Trace SW5548, purchased from us
in 2001. It's been working great for him all this
time, but the dilemma is he's gotten a new Hotpoint
washing machine, and its electronics don't like the
old inverter. Is there some sort of power conditioner
or 'line tamer' available that will work for this
appliance's operation? Any ideas would be greatly
appreciated. He's rather loathe to replace his
inverter if he doesn't need to.
Best,
Chris Daum
Oasis Montana Inc.
406-777-4309 or 4321
406-777-4309 fax
www.oasismontana.com <http://www.oasismontana.com/>
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