I got a great deal on an EcoFlow Delta Pro 3 8 kWh whole house battery backup. I already had a much smaller unit setup in my shop for occasional use for small items. I haven’t had a lot of time to use my 1F last year, but I enjoy it when I do and I recently ordered my Elite upgrade and Redline spindle. In the meantime while I’m waiting and having some time for the holidays and between work projects I decided to do some carving. I posted elsewhere about a wrecked epoxy/walnut carve (Facebook, I think). I’ve now realized I had a PETG reducer between my metal 4” DC duct and a spiral wound flex 2” hose, without a bonding jumper. I’m pretty sure that was the source of static that bombed my carve withw epoxy.
Meanwhile, I need some more circuits in my garage but I have really limited time. So, I moved the whole house battery down and was thinking I could put the 1F and Makita on it while I’m waiting on the new spindle and upgrade. I’ve searched the literature on the EcoFlow and I can’t find anything about it radiating noise. I was thinking this would let me plug my 1 F into a different circuit that my Harbor Freight motor for my DC and maybe even let me use my table saw while the router was running.
Does anyone have any “off grid” experience with short duration carves on something like this? Does anyone know if a 1F and Makita plugged into the EcoFlow has noise mitigated by the battery inverter in the system?
TIA
The spec says the EcoFlow Delta Pro 3 has 4.1kwh of energy available fully charged. Assuming the 6.5amp makita trim router and I am guessing 3 amps for the 1F (somebody here has to know the actual draw of the non-elite 1F units, I don’t so 3amps 120vac is my guess). That would be 1.14kw draw max, divide this into the 4.1kwh our energy if fully charged and you get about 3.5 hours of run time in the lab. I would go no more than 2.5 hours to account for age and uncertainty. If you can do what you do on the table saw and then plug the EcoFlow back in to the wall in less than 2.5 hours you should be fine, especially if the wall is 240vac as you get a 3600w charge at 240vac and only 1800 at 120vac. The EcoFlow output is an AC inverter but the actual sine wave characteristic are going to be dependent on how good the output filter caps are at smoothing the step wave. Old caps equals sloppy output wave. The Makita will not care, and my guess is the 1F won’t care either as it will just be a bit sloppy, not a signal with a lot of transient spikes. Likely it will be far better than house current. Many data centers and all their computers run just great 100% of the time on a similar output to the EcoFlow using dual conversion architecture. AC Line/Rectifier → DC bus/Battery → AC Inverter IGBT/Cap Filter output. Ya won’t know till you try. Maybe cut some air for a few minutes and see how fast your charge is going down and the actual load vs the energy available. Pretty easy math if you have real values.
Thanks for the response. I have an expansion pack, so it is 8 kWh, not 4. It will ride through as long as I would ever use my table saw or other tool and allow it. It does run the 1F and Makita just fine, from an enough power perspective. Also, the considerably lower priced Delta 2 2 kWh unit is more than adequate to ride through breaker trips from overloading my one garage circuit. This has been tested.
My question and the reason for posting under the EMI category is-does anyone have specific experience around these off grid devices and the 1F? Does anyone have a POV on radiated noise from the solid state inverters these power supplies use? I know I had a failed carve recently and it was from static/EMI. Multi variable calculate wasn’t my strongest course (got a B), but if I have two sources of intermittent noise, trying to solve for both, with one a function of the other, doesn’t work well.
To answer your specific question: If you have a problem it is not the power source. In the same equipment class:I ran 5kw Trace Engineering 48v solar inverters off a DC bus and batteries for over 20 years powering telecom control signal equipment that was hyper sensitive to variations. It was the cleanest AC power in the central offices. Hope that experience helps. I am kinda shocked (ha, get it?) that static caused you a problem.My dust system builds up a pretty good field (like hair on my arm standing up when I walk by the flex drops not in grounded spiral and I have not seen a glitch.I did hard ground the 1F QCW to building steel along with the sub panel and I run that building as an isolated ground system separate from the the upstream supply panel. Good luck.
Thanks. Didn’t means for my text to sound snappy. I was working on honey dos at the time….I didn’t properly bond my QCW. I just read all the EMI posts last night. It never occurred to me before this last wreck that the z and x rail weren’t bonded to the y/b rails. And I’m a power guy, not a comms or EMI guy so I never really spent a bunch of time thinking about the lack of a braided metal shield around the connections. So, when I take it all apart for the new controller and upgrade I’m going to properly bond everything. And the miss on the 4” to 2” reducer was just stupid. It is supposed to be a hobby for wood working. I enjoy the problems and problem solving in general, but wasn’t in the thought frame.
Anyway. Thanks, I like using the EcoFlow things for now. When this round of projects are behind me at work I’ll attack my shop.