BaronVonChickenPants wrote: ↑
Wed, 07 Feb 2018, 11:12
Good Afternoon all,
I have been watching and reading this thread almost from the start and am truly impressed by everyone's efforts to reverse engineer the schematics and firmware of these units.
Welcome, Jordan. Thanks for the kind words. I note that by far the bulk of that work has been done by Coulomb.
I am tempted to purchase one of the PIP units for an off-grid property but would first like to perform testing at home with on-grid mains power available. Just to get past some of the quirky issues people seem to be having.
So now the questions:
My understanding is that these are certified as approved for on-grid and grid-feed connection, is this correct?
No. Not at all. Not sure how you got that idea. They are not even capable
of feeding power into the grid. They are not on the CEC approved list at all, although the equivalent rebadged Giant Power IPS-4000WM is
. But non grid-feed inverters do not need to be on the CEC approved list to be legal. Just don't expect to get any STCs for PV systems using them.
My understanding is that they are perfectly legal to use in Australia, provided all the relevant installation standards are adhered to, including AS/NZS 3000 Wiring Rules, AS 4086 Batteries and AS/NZS 5033 PV arrays. To comply with the latter, any connected PV array must have an open circuit voltage not exceeding 120 V DC at the lowest operating temperature. This is for safety reasons, because these inverters do not have insulation monitoring or earth leakage detection on their PV array inputs.
What is the real world difference between the PIP-4048MS PF0.8 and the PIP-5048MS PF1.0 other than just the writing on the package and brochure.
Are they truly 20% more efficient?
Do they really deliver 5000w?
I have never tested one, but I fully expect they will really deliver 5000 W. They are heavier. They do not claim to be 20% more efficient. I expect they are about the same efficiency at the same power level. You need to read up on the difference between VA and W in AC circuits.
And, most importantly, do they work with the patched firmware that was written for the PIP-4048MS?
No. I thought we had made that clear in several posts recently.
Other than being a single self contained unit with higher output, would they really offer any advantage over the UPS for off-grid use?
Other than that, no.
I notice in the Black Monolith images I could not see an earth-neutral bond in the AC box, do these have a floating neutral or was the bond in the main electrical distribution board?
The MEN link was in the main switchboard, as usual.
The off-grid site uses a genuine Chinesium 6.5kva AVR type genset, one of these clones
, so the output frequency will vary slightly depending on load, people seem to be struggling with this, what are the chances of making the PIP's tolerant of 50-ish Hz instead of exactly 50Hz?
At this time, we have no idea how this might be done, and are not investigating it. But do be sure to set parameter  to APL, not UPS.
And finally a little off topic but, where does one find purchase and pricing information on the LyteFyba BMS? I have not seen any mention of them on Lithium Battery Systems' site.
Coulomb and I might be brilliant engineers
but we are lousy salesmen.
It turns out LBS were interested in using them in their own products, but not in selling them separately. They have left such sales to us, and have now handed production back to us. We are very grateful to them for getting the ball rolling. Send us an email if you want a quote, or more information. http://dkeenan.com
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).