[RE-wrenches] Pressure pump and Magnum 4448 causing washer shutdown

[larry at starlightsolar.com]

Hello Jeremy,

For more than a decade we have been aware of this issue wit Magnum Energy inverters. This primarily happened with the washer brand Splendide but other motors run by electronic controllers have caused the issue as well.  

When the washer is powered by Magnum inverters, the AC waveform becomes very distorted. You can view this on a scope as in the attached image. When you try to power other complex loads at the same time, the inverter can’t sufficiently emulate a sine wave.

We found a simple solution. Install a high frequency inverter for the washer only. A 600W GoPower (made by Cotek) inverter has worked for us. They are cheap but well made with great support.

Larry Crutcher
Starlight Solar Power Systems

Magnum inverter running Splendide washer, Voltage(top) and current.





On May 26, 2021, at 5:58 AM, Jeremy Rodriguez <allsolarjeremy at msn.com> wrote:

Looking for recommendations on a solution for the following. 
Customer is doing laundry and when his new pressure pump comes on, it causes the normal power flicker, thus the washing machine shuts down. 

He runs a small generator to power the washing machine with no problems. 

The new pump is pulling from a cistern and is a 115V unit. Not sure of the pressure tank size or pump hp rating.
 
•ME 4448 PAE with one string of ~500 AH battery cap. 

Jeremy Rodriguez 
Solar Installation / Design Expert 
All Solar, Inc.
1453 M St
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand. 



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