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by weber
Thu, 28 May 2020, 11:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

I assume that the KettleKomp™ voltage is tested against PBCV and raw battery voltage against PSDV. Am I right? No. All comparisons related to either low cutoff voltage (PBCV) or back-to-utility voltage (PSDV) use the compensated battery voltage. That includes the low battery warning that appears be...
by weber
Tue, 12 May 2020, 07:23
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

Is there a command (in the patched firmware) that switches the inverter back to battery before the "back to battery voltage" [variabel 13] is reached? And if yes, is there a command to switch to grid before "back to AC" voltage [12] or "battery cut off" voltage [29] is reached? No. But in both patc...
by weber
Thu, 07 May 2020, 10:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 239
Views: 28286

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

I concede defeat on one aspect at least. Clearly coulomb was right that all 3 high-voltage-SCC models can do solar+utility->loads. It's still not entirely clear how they do it. Or why some of them can only do it when there is no battery. I note that merely blending solar+utility is not what's at iss...
by weber
Wed, 06 May 2020, 16:41
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 239
Views: 28286

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

The Watchpower image here https://www.solar-shop.co.za/content/11-axpert-voltronics-power-use certainly shows an inverter doing solar+utility->loads, with no battery. It claims to be of an MG/MKS II (PIP/Axpert). Is there anything in the image itself that confirms it is that model? e.g. the serial n...
by weber
Wed, 06 May 2020, 10:43
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3757

Re: How to tell a kilowatt hour from a kelvin week henry

I received the following reply: Hi Dave, Thanks for your e-mail. You raise some interesting points. The choice of symbols is an interesting one. There are very few un-used symbols! I discounted ‘x’ mainly because it is used as the multiplication symbol. I preferred symbols not already used in the SI...
by weber
Wed, 06 May 2020, 10:26
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3757

Re: How to tell a kilowatt hour from a kelvin week henry

I followed it almost immediately with this email: I just noticed an inconsistency in what I wrote. I wrote: "In each of the pairs zetta/zepto and yotta/yocto, the initial consonant and vowel are the same, and I agree we should continue that pattern." But I later recommended renna/rovo, which have di...
by weber
Wed, 06 May 2020, 10:24
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3757

Re: How to tell a kilowatt hour from a kelvin week henry

Serious unit nerds (like myself) may be interested to read this email I wrote to SI expert Dr Richard Brown back in September 2019. It's about what comes after yotta = 1000⁸, and so relates to this post earlier in this topic . Dear Dr Brown, I have just read your article, " On the nature of SI prefi...
by weber
Tue, 05 May 2020, 21:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 239
Views: 28286

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

OK. Well that is some evidence that the GK does undeclared grid interactivity. Enough not to take the risk, but not enough to find them guilty beyond reasonable doubt. Is there someone out there with a PIP-GK or an Axpert VM III who can tell us whether the output voltage is 230 V, or is the same as ...
by weber
Tue, 05 May 2020, 15:36
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 239
Views: 28286

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

That makes them "even more illegal" for use in Australia and I assume most other countries Thanks, that was my main concern: the "legal" aspect. I'm not allowed to have any grid injection and I don't want to get in trouble. I suspect Coulomb may be mistaken here. :o    I can't find any evidence tha...
by weber
Tue, 05 May 2020, 06:05
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

paulvk wrote:
Mon, 04 May 2020, 12:15
Have you measured the lowest it goes before distortion ?
Yes. Coulomb and I posted about that back in November. 48.1 V for the 64 V model. 42.1 V for the 58.4 V model.
by weber
Mon, 04 May 2020, 09:08
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

The only thing I have to add to Coulomb's excellent post, is that you can't parallel a 64/66 V model with a 58.4/60 V model. The 58.4 V model is preferred, because it can maintain a proper sine wave down to lower battery voltages.
by weber
Mon, 27 Apr 2020, 07:52
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 469
Views: 41952

Re: PIP inverter repairs and hardware modifications

Hey weber, a follow-up question to this, I have opposite occurrence where the load would increase and the fan speed does not increase to compensate and the inverter eventually throws a 02 fault code, meaning a temperature rise of 100 degrees, I removed the two fans and they do work at full throttle...
by weber
Thu, 23 Apr 2020, 10:32
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 145
Views: 17925

Re: Francisco's Electric Pajero

It turns out there is nothing wrong and there is an unavoidable reason for the behavior. Points for anyone who can explain it. Will post the answer in a few days. :lol: I haven't read any other response yet. :) It's due to high shoot-thru current due to the reverse recovery time of the low-side ant...
by weber
Mon, 20 Apr 2020, 09:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

Is it correct, that I can't disable KettleKomp™? That is correct. But you can reduce its effect to a minimum, by setting the low cutoff voltage [29] to a value that ends in .0 or .5, and setting the max charge current [2] on all inverters to the maximum safe value. Are there other differences betwe...
by weber
Tue, 14 Apr 2020, 19:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

Thank You for explanation, but is there any way to fix this? I already told you how to fix it, if it is due to a difference in battery voltage calibration. Follow the link in my previous post. If you get all three inverters reading the same battery voltage within ±0.1 V and the problem still occurs...
by weber
Tue, 14 Apr 2020, 09:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

Huh. The firmware checks to see if either PV or utility charging is happening to decide whether to display the graph as charging (sequence of zero, one,... bars), or the fixed number of bars, usually based on battery voltage, but sometimes obtained from a BMS. All the paralleled units should agree ...
by weber
Wed, 08 Apr 2020, 07:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

In the PIP4048/5048s you can limit the max charging current (solar + grid - option 2), lets say 60A. If you set max grid charging to say 2A (option 11), then max solar charging should be 58A. Is my assumption here correct? It depends on settings 1, 12, 13 and 16. But I don't think this matters for ...
by weber
Wed, 08 Apr 2020, 06:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

djonexx wrote:
Wed, 08 Apr 2020, 01:43
is there any way to get the ID (0-9) of the machine?
Send commands QPGS0, QPGS1, QPGS2, ... QPGS8. The first field of the response will be 1 if a machine with that ID exists, and if so, the second field will be its serial number.
by weber
Tue, 07 Apr 2020, 16:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: LG Chem Resu 10 with PIP-4048MS

I know it's been a while. I since implemented Dynamic Current Control but it doesn't seem to work in my 3-phase configuration. I see no blinking dot in the display or any sign the inverters behave differently. ... The identifiers of the three-phase inverters are 2, 3 and 4. However, the commands ab...
by weber
Wed, 11 Mar 2020, 07:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPP 5048MS or 5048MK inverters
Replies: 8
Views: 620

Re: MPP 5048MS or 5048MK inverters

Do not you know what kind of firmware are equip nowadays 5048MS inverters? I'm not sure I understand the question. I do not understand what you mean by "kind" of firmware. You can see here , that they now come with version 72.40 firmware. But Coulomb and I can only offer patched firmware 72.20e .
by weber
Tue, 10 Mar 2020, 09:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPP 5048MS or 5048MK inverters
Replies: 8
Views: 620

Re: MPP 5048MS or 5048MK inverters

I am keen on MPP solar inverters in hybrid mode. I note that the PIP-5048xx inverters are not "hybrid" in the modern sense of being capable of both stand-alone and grid-feed operation. They cannot feed power to the grid at all. They are "hybrid" in the old sense of taking energy from multiple sourc...
by weber
Tue, 10 Mar 2020, 08:29
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2651
Views: 580814

Re: PIP-4048MS and PIP-5048MS inverters

Hi everyone, before updating the firmware for my inverter I don't understand which version is suitable for a PIP 5048MS(64V) (PF1) with firmware version 72.40 !!! that from the specifications on the site: "72.40-72.89: You are running older hardware, rated at 4kW (PF0.8). You can update to the late...
by weber
Sat, 22 Feb 2020, 21:23
Forum: Renewable Energy and Storage (Non-EV)
Topic: PV Inverter recomendation
Replies: 13
Views: 701

Re: PV Inverter recomendation

What happens when i turn on a load that i connected to the AC out on the PIP when i also have another MPPT charger and i have full PV energy ? I guess the Inverter just pulls from the battery which both MPPT chargers are connected (both the internal and the external one), is that correct ? Yes. I m...
by weber
Sat, 22 Feb 2020, 15:51
Forum: Renewable Energy and Storage (Non-EV)
Topic: PV Inverter recomendation
Replies: 13
Views: 701

Re: PV Inverter recomendation

And yes i was sort of guessing about the premature float bug only being solved on the inverter. You could use a separate MPPT that is not made by Voltronic, and so does not have the premature float bug, and that lets you set the lower voltage threshold for going from float to bulk/absorb to suit an...
by weber
Fri, 21 Feb 2020, 22:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PV Inverter recomendation
Replies: 13
Views: 701

Re: PV Inverter recomendation

So you could either sell 2 or buy 1. If i have 20 now and i place 10 on each side then i would need to buy 4 panels more to make strings of 3 no ? If you sold 2 you could have 9 on each side. If you buy 1, you could have 9 on one side and 12 on the other. Assuming you're in the northern hemisphere,...