[RE-wrenches] Compressor motor/SW+5548

[Dan Fink]

boB, a spongey line on a load? Done it with windmills, never with a load.
Makes complete sense to me, I'll add that to the old bag of tricks.

Dan Fink
Adjunct Professor of Solar Energy Technology, Ecotech Institute
IREC Certified Instructor™ for:
~ PV Installation Professional
~ Small Wind Installer
Executive Director, Buckville Energy
NABCEP Registered Continuing Education Providers™
970.672.4342



On Mon, May 30, 2016 at 12:54 PM, bob at midnitesolar.com <bob at midnitesolar.com
> wrote:

>
> The (newer) SW5548 was harder on over current protection, mainly because
>
> it could put out more current than the SW4048...
>
> One trick to try is to place a long(ish) extension cord between the SW and
> the load to give it a wee bit of series resistance.
>
> Doing this would often reduce that OCP and help motors to start.
>
> boB
>
> On 5/30/2016 11:03 AM, Dan Fink wrote:
>
> Does your air compressor have an unloader valve, or can you install one?
> That should do the trick, sounds like you are just running into the
> regular high surge current demand.
> Off the grid, compressors are in about the same nasty league as old well
> pumps as far as surge demand.
>
>
>
>
> Dan Fink
> Adjunct Professor of Solar Energy Technology, Ecotech Institute
> IREC Certified Instructor™ for:
> ~ PV Installation Professional
> ~ Small Wind Installer
> Executive Director, Buckville Energy
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
> On Mon, May 30, 2016 at 10:46 AM, Jeremy Rodriguez <
> <allsolarjeremy at msn.com>allsolarjeremy at msn.com> wrote:
>
>> Hello
>> I've got an SW+5548 that will barley start my air compressor. Once it
>> does run it shows 17 Amps on the inverters loads meter. During start up it
>> reads 60+ amps.
>> Do you think better capacitors would help the situation?
>> BTW I've never ran the compressor off grid prior.
>> I even tried #8 from the Breaker to the pressure switch, about 9ft, with
>> no benefit. The compressor will only start with the tank completely empty.
>>
>> Jeremy Rodriguez
>> Solar Installation And Design Expert
>> All Solar, Inc.
>> 1463 M St
>> Penrose Colorado 81240
>>
>> Sent by Jeremy's iPhone. Sorry for typos and shorthand!
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