M4wd&Fabrications

Projects place => Projects Section => Topic started by: M4wdFab on July 07, 2014, 05:23:58 PM

Title: HF power inverter > Miller 211
Post by: M4wdFab on July 07, 2014, 05:23:58 PM

so this was a fail try one.  i think its a noise issue from the welder.

The welder will run on 5000watts from a 3K and 2K Hondas hooked together

http://powerequipment.honda.com/generators/selecting-a-generator#Power


no go with this guy

http://www.harborfreight.com/5000-watt-continuous10000-watt-peak-power-inverter-60635-9865.html

modified sine wave chop

tempting to try a 50 amp line filter that are 50-125$

Title: Re: HF power inverter > Miller 211
Post by: mr.mindless on July 07, 2014, 06:14:58 PM

Eroc, any access to a small load bank through work to actually test this beast to see if it meets it's 5/10k spec?

Overrating is my first thought. But I guess it could be dirty feedback to the inventor, confusing it.


Tapatalking in traffic

Title: Re: HF power inverter > Miller 211
Post by: M4wdFab on July 07, 2014, 07:08:05 PM

i have enough things and the correct range current clamp on meters i can do some playing to whats up. 

the spectrum thing we have at work really isnt portable to get a snap shot of whats going on or to even see if the issue is in the range off the shelf line filters would fix 

Title: Re: HF power inverter > Miller 211
Post by: etk300ex on July 08, 2014, 08:52:42 AM

I can rent one from Milton Cat  @ $2k for a week ;D.  Wouldn't surprise me if its quadrupedal over rated.  I do have a power quality meter.

What is the issue with this thing, shuts off? over heats?  meter reading?

First thought is whats the DC source and wire size.  That is a HUGE inverter.  Specs say input of 560A DC, 0 awg up to 6', 000 awg up to 10'. 

Title: Re: HF power inverter > Miller 211
Post by: M4wdFab on July 08, 2014, 09:36:26 AM

these are the cables i purchased

http://www.harborfreight.com/300amp-6ft-inverter-cable-set-69537.html 


no hot or input voltage drop issue- i think its a noise issue or output quality issue. 


power meter pins immediately erratically between 5k and 10K with welder on lowest setting, you can here even the fan on the welder get pissed.

Title: Re: HF power inverter > Miller 211
Post by: Ryan on July 08, 2014, 09:39:02 AM

How many batteries are you running it off of?

2gauge wire seems pretty thin for 10,000 watts peak....

Title: Re: HF power inverter > Miller 211
Post by: M4wdFab on July 08, 2014, 09:44:40 AM

3 batteries from the international, truck idling when we tried to weld also

Title: Re: HF power inverter > Miller 211
Post by: etk300ex on July 08, 2014, 09:48:18 AM

how are you determining its not an input issue?

Title: Re: HF power inverter > Miller 211
Post by: M4wdFab on July 08, 2014, 09:59:33 AM

voltage on invertor seemed pretty consistant, not flashing-

going to try grounding the case first, and then running the highest "dumb" load i have while looking at voltage input and current to the inverter.  i have a 600amp DC clamp meter (yes it is actually DC)


from reading, really thing the 87% square chop wave is what is pissing the welder off and creating so much feed back.

Title: Re: HF power inverter > Miller 211
Post by: etk300ex on July 08, 2014, 11:10:20 AM

Defiantly a possibility.

Title: Re: HF power inverter > Miller 211
Post by: M4wdFab on July 08, 2014, 11:44:06 AM

need to take a look at some specs and order a line filter.  i think its worth 75$ to give it a try for a 50amp plug and play fix