[RE-wrenches] New Washer - Old Inverter

[Steve Higgins]

The old SW's used to be called "sinewave" but they weren't really full
sinewave outputs.   The outputs had steps or "shorts' in them and the
amount of steps depended on what the battery voltage on the input was.

Generally these steps ranged between 32 and 60 steps, if I remember
correctly... the steps are what caused nightmares with some, but not many
appliances in the mid 90's...

Today, with the appliances getting more and more sensitive, this issue
comes up more often.   This often leads the customer into having to buy a
new inverter that has a cleaner waveform... Most of the "Pure Sinewave"
inverter out there run in the 350-400 steps these days, that means the
shorting time constants are much shorter, and doesn't affect the appliances
like they did in the past...

With that being said, still to this day some appliances are also affected
by even the newer inverters.   So never promise that these newer inverters
will work with everything..




On Feb 8, 2017 2:11 PM, "Lou Russo" <lou at spreesolarsystems.com> wrote:

> Aloha All,
>
> I have a client with a old Trace 4024 on a APT center. Everything has
> worked great for over 20 years. He purchased a new washing machine from
> Sears that does not want to work. The voltage at the outlet is 117 vac and
> the Sears guy says that is the issue. When the system is running on the
> genset (Northern Light 6kW Diesel) we get 121 vac and the washer runs fine.
> That seems like a very tight voltage window and a issue with the washer not
> the system. I have seen sensitive electronics go wacky with no N-G bound
> maybe that is the issue? I did not install the system so I would have go
> poke around. Any one out there have any ideas?
>
>
> Aloha,
>
> Lou Russo
> lou at spreesolarsystems.com
> 440 345 6762 <(440)%20345-6762>
> Spree Solar Systems LLC
> CT-34322
>
>
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