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Interesting to watch the evolution of the Hobby Inverter boys. Expecting to be an astounding commercial success with the most "Feature Rich" inverter on the market (yawn). With a competitive price because thay can avoid the huge and expensive product testing and validation (or rather, they don't...

These guys have developed the most rugged output configuration of their MOSFETS in the industry and will tolerate any kind of abuse or stress with zero failure. The most indestructible inverters on the planet. Combine that with the most feature rich inverters and you have real industry...

You didn't see this in my post: Replaced 12 flooded lead acid golf cart batteries today. Total capacity 620 A/H at 24 V = 14880 kWh Using cheap garbage Interstates from Cosco total cost $1300 Batteries were 5 years old. Did a quote for a LifPo4 battery. Of course you only need 7 kWh from LifPo...

Oh yes, among my numerous published articles, this one on inverter reliability: http://www.how2power.com/newsletters/2201/articles/H2PToday2201_design_RedHillLabs.pdf?NOREDIR=1

Two years ago I developed the worlds smallest operational amplifier https://www.onsemi.com/products/signal-conditioning-control/amplifiers-comparators/operational-amplifiers-op-amps/ncs20282 https://www.onsemi.com/download/data-sheet/pdf/ncs20282-d.pdf

When I did they were audio transformers, some mic input but mostly tube output stages. The toughest problem was leakage inductance that was dealt with by progressive winding interleaving until the limit was reached when a/3N^2<c where a is total winding thickness, N is the number of leakage flux...

Good point. I need to get professional help to quit posting on message boards. It is a sick addiction.

I probably should get professional help to quit posting on message boards. I really need to quit.

It's clear that everyone here is an expert. Thanks all!

Everyone seems to have an answer for everything. I like being told how I will have to build the system I already have and how virtually impossible it will be.

7000 watts 24 volts, and my existing system is 4000 watts 24 volts and the two MPPT controllers I have makes an irrelevant level of improvement compared to its cost. Also running two conventional controllers.

I've got regular charge controllers and MPPT charge controllers. My experience for over 10 years is that the MPPT isn't worth it, at least not here in the sunny Arizona desert. My upcoming system upgrades include upgrading to non-MPPT charge controllers.

Replaced 12 flooded lead acid golf cart batteries today. Total capacity 620 A/H at 24 V = 14880 kWh Using cheap garbage Interstates from Cosco total cost $1300 Batteries were 5 years old. Did a quote for a LifPo4 battery. Of course you only need 7 kWh from LifPo for comparable performance to...

Lots of epsilon minus at Genetry. Most of what they do, say, claim, and their prior experience is "not even wrong".

Thanks for the info on the SMA inverters (can it be substantiated/documented in any way?). I'm starting a list of known manufacturers of transformerless inverters that have that protection. SOA, even in switching, becomes important in fault conditions, in particular shorted loads. During the...

Fronius inverters for sure, had a direct communication with their engineers. Most companies don't even know what I'm talking about. Attached document details the problem but you may not be able to follow unless your an inverter design engineer.

I meant +120 degF

1. Is this inverter equipped with fault detection such that, if an output switch or controller fails, that it will disconnect the output with a physical relay, to prevent large DC outputs that can damage loads? 2. A serious test is to connect full load to the inverter and bake it in a 120 degF...

Thanks, I appreciate that.

Not sure what to tell you. I've got a Tektronix scope and the waveforms from my two Magnums has always been totally clean. In a couple days I'll be at my other ranch and can report on what brand the dishwasher is there. We bought it in 2016. Not exactly related but you can see some scope shots...

I appreciate the response. Nonetheless my exact question is: Which inverters at the web page have transformers?

All I want to know is which ones have the big, heavy output transformers.

And what happens if you connect the dishwasher directly to the inverter AC output? (bypass the UPS)

I have a Magnum MS4024 24 volt 4 kw inverter that runs our dishwasher fine. I'm at my other house as I write this so I don't remember make or model except it is not a GE. You use a UPS on the dishwasher? Not sure I understand that. Either the dishwasher is connected to your inverter or it...

Which inverters at the web page have transformers? Or, which ones are transformerless?

Note that in the video it was measured with an oscilloscope. All these little power meters may not catch the whole event, or are averaging it.

Not saying all transformerless inverters are bad. But if you ask if they have DC protection if an output device they'll give you vague jargon and do anything to avoid a straight answer, and probably only their design engineer really knows. I am a big fan of transformer inverters but I could...

You may want to read the following. I have also secured a report on the actual circuitry and implementation in the Tesla Model Y and intend to write on, especially if I find issues. There are good references in here why the aircraft industry does not do this. There is a path forward for...

Your other surges are so big that it probably doesn't matter, but the fridge is closer to 10 amps: See at 8:30:

Here's some interesting insight on inverters, courtesy of redhilllabs.com:

When you get a circuit that you can short the output with abandon then you'll have something useful. If it keeps blowing up I can help.

What make and model of generator?

The main thing the Eaton document states that only begins to make their arguments credible is that there inverters won't allow DC out if an output device fails. Unfortunately they are vague on how that is accomplished, that vagueness alone calls their method into question. This kind of failure...

Transformerless inverters must be carefully designed. See