This falls under the Beta testing I'm doing up at MS. Today I spanked Rosie a few times with a 27kW surge load, 16kW running load. All were COLD starts! Ouch! The video here is of my last spanking of poor Rosie...never did she shed a tear.
Breakers for all the lights and all the pumps in the MS trade show booth were flipped on...then Rosie's Battery breaker was flipped on....12kW of lights, 15kW pump surge. :) Robin said try to break the Inverters...OK...Tried and failed to break anything today. Maybe I'll have better luck next week?
Video. https://www.youtube.com/watch?v=h0YE-2cVWBU
WOW That is a big load indeed. Just think what two Rosies could do.....
Watched the video. Impressive!
I wonder what in the world did you use for a battery to run all that stuff? That had to be pulling 250-300A. And while there wasn't any reference in the video, it appears only one cable on the battery input.
And of course the biggest most often asked question is, when will Rosie get all dressed up for her coming out party?
Mike
Quote from: qrper on December 04, 2021, 10:55:23 AM
Watched the video. Impressive!
I wonder what in the world did you use for a battery to run all that stuff? That had to be pulling 250-300A. And while there wasn't any reference in the video, it appears only one cable on the battery input.
And of course the biggest most often asked question is, when will Rosie get all dressed up for her coming out party?
Mike
The booth does not have a lot of room for a big battery bank. It's made for interactive and intermittent use. Four small AGM's under the covers. They were hammered hard with what I did! 500 surge amps maybe....in one run the 250 amp Rosie DC breaker tripped after about 1-2 minutes continuous at 16kW....:) The battery voltage though had dropped way down to 38.8 so the current rose up a bunch!
There are at least 6 or 7 Rosie's alive right now and having the final kinks, bugs worked out. These are in house Beta units. Andy got side tracked with getting the 12V Rosie version started. He has one hand on each of them.....but as you can tell from the video, Big Rosie is seeing bright light at the end of the tunnel. :)
SO, Beta units are getting closer as well?
Quote from: Highflyer on December 05, 2021, 09:51:45 AM
SO, Beta units are getting closer as well?
Yes they are. Midnite has 6 in house Beta units up and running. They are gearing up to build I think two dozen Beta units right now. All parts required are on hand or have been ordered. Some will be for extensive testing but most are going to end up in Beta testers hands. 2-3 months maybe? Don't hold me to that as I'm just going by confirmed rumors. :) Getting parts/materials is like everywhere now, hit and miss. The number of hits will determine when....
So I hit Rosie again yesterday.....she handles a 20kw load for about 10 seconds before the protection shuts her down.
I brought along a portable load bank. Good for about 5+ kW. So, my 5kW+9kW of lights+about 7kW of pumps = close to 20K+ running watts. I was trying for a different surge situation this time, just a big fat load, 14kW, more than double Rosie's rated continuous output, then turn on those pumps.......No problem! No hesitation at all. :)
Rosie pulled 467 Amps from the batteries at 43.56 volts. That's 20,342 watts on the DC side. She held that load for 10-15 seconds before shutting down! Wow! OK, now I'm a little nervous....will she come back to life? Yup! :) Big sigh....Robin said I can't hurt her...but still....One more time to make sure all is good. Did it again. Same result. 10-15 seconds, shutdown. Protection working properly but dang that's some nice hang time before she says lights out!
Gotta get a look at the AC output side....3rd run. Got a pic of the current, 76 amps, from one leg but neglected to pull back and include the volts. They were around 114-115. So that's 152 amps X 115 =17,480 AC watts. Not too shabby for an inverter rated at 6.8kW!
A few more Rosie test videos.
https://www.youtube.com/watch?v=Cu_6HX2Nqd4
https://www.youtube.com/watch?v=rMauRr_ZY4M
So clearly Rosie needs a bigger breaker. That is what I got out of those videos :)
Quote from: Highflyer on December 12, 2021, 10:42:13 AM
So clearly Rosie needs a bigger breaker. That is what I got out of those videos :)
Well......interesting you should mention that. After I did those videos the 250 amp Carling breaker was swapped out to a 300 amp CBI breaker.....The Carling held just over a minute in the 350 amp 2X load test. The CBI gave up at about 30 seconds in the identical test.
The CBI is not as generous to overloads clearly. What breaker ends up in Rosie will be determined by Midnites final specs for overloads.
Did I say bigger, I meant to say better......AND bigger!
Did an inrush test on Rosie with a 2-3HP well pump today.
https://www.youtube.com/watch?v=05fWmqo5I4w
Are you sure on that HP, a common 3/4hp set at 300 feet deep runs about 8 amp per leg and my chart shows a 1hp to be around 12 amps per leg.
Quote from: FNG on December 15, 2021, 05:19:55 AM
Are you sure on that HP, a common 3/4hp set at 300 feet deep runs about 8 amp per leg and my chart shows a 1hp to be around 12 amps per leg.
This is the chart I used to get in the ballpark based on the running current. I do plan to pull the pump and get model/specs etc. In the near future.
This chart is more detailed. Lots of variables. Going by the numbers here 1.5HP is most likely. If it's not a pain to get an eyeball on it, and the label is readable...I'll try to get the info. :) Rosie is impressive regardless. :)
This is the high tech well simulator....about 10 feet tall. Now where is that ladder?......pump is near the bottom I assume.
Pulled pump from test tank today. 1.5 HP it is.
I have a 3 HP pump at the bottom or our well which I'll be glad to introduce to Rosie power!
Onanparts " What happened?" You seemed on a run in December!
No more access to Rosie or did you misuse use her with too many or heavy loads ?
Waiting patiently for the next installment. especially about the submersible pums as we have one of 3 different sized ( 1/3 Hp, 2 wire, 2 @ 1/2 Hp 3 wire ,and 1 3/4/Hp 3 wire) pumps to put in the lake for a fire protection on the house and the guest cabin ( fingers crossed after 2 BIG fires on the same mountain )
Naturally I would like to be able to have 2 pumps on at the same time, if and when needed !
Hopefully he responds to this but the Rosie has no problem with our submersible pump here in the caldron filled with water.
boB
Good morning boB. do you recall the Hp of the pump and the CALDRON depth ( Galvanized culvert ?) the pump is at
Do you have an estimate of the testing period remain ?
Quote from: Westbranch on April 04, 2022, 01:01:12 PM
Good morning boB. do you recall the Hp of the pump and the CALDRON depth ( Galvanized culvert ?) the pump is at
Do you have an estimate of the testing period remain ?
Pump Name plate is a few posts above it was 1.5hp. As for depth I think that was some where but it is like 6 feet if memory serves, Need to get them a 4-500 foot tall tower to pump water up and add some load lol
Apologies FNG, I looked at the picture quickly and I was thinking about our when old House drilled well that started at 60 ft , then redriiled to 150 ft, finally the driller took us to 305 ft, and 30+ GPM.
For the new house I wasn't thinking of a (static) cistern as in the winter we do get long periods at minus 30* F . I hope to get a smaller backup Genny in case we have a repeat of the 4 days cloud / snow and poor sleding, like the last year.