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by weber
Mon, 04 Nov 2019, 11:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 274
Views: 27615

Re: PIP-5048MK inverter

You say you wouldn't recommend the GK. In the same way you wouldn't recommend the MG? That's correct. I've got my MG wired with a spd on the panel side and a RCCB type B on the AC side and that seems fine. What do you think? I think many people would be very grateful, if you (or your electrician if...
by weber
Mon, 04 Nov 2019, 09:30
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 274
Views: 27615

Re: PIP-5048MK inverter

I am about to create a system for a friend with some pylontech batteries and was looking at the MK and GK forums. Considering what I read here, would you all advise me to get a MS with a patched firmware instead of a MK? Besides that: trying to max out the # panels, would the MK or MS take 6p4s pan...
by weber
Sun, 03 Nov 2019, 11:51
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2652
Views: 579078

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

I think the biggest hassle would be that the firmware will treat the battery as "weak" (with several implications, including a low battery warning and switching to bypass mode if possible) when the battery voltage drops to below 42.0 V (2.0 V above the low DC cutoff voltage, setting 29). It won't b...
by weber
Sun, 03 Nov 2019, 09:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2652
Views: 579078

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

I work for a company in the field of Li-Ion battery technology. We have tons of Li-Ion-Batteries (NMC and NCA, so 3,7V per cell). we have VW E-Golf Batteries, VW Passat GTE, VW E-Up, BMW i3 and all other manufacturer batteries. A very typical batterie nominal voltage is 44,4V. Upper limit 50,2V, Lo...
by weber
Sun, 03 Nov 2019, 06:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2652
Views: 579078

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

So does the LC flavour [of the patched firmware] give a more realistic battery % indicator for Lithium Ion batteries on the front display? Marginally, in that the wild guess is a load compensated wild guess. The guessed SOC in percent is still basically the number of tenths of a volt above the DC l...
by weber
Thu, 24 Oct 2019, 20:46
Forum: Mazda
Topic: Mazda MX-30 electric
Replies: 5
Views: 2201

Re: Mazda MX-30 electric

Yes, that's good news. It has been three years since Mazda's Dinosaur Declaration.
by weber
Fri, 27 Sep 2019, 10:21
Forum: Admin Notices
Topic: New [embed]...[/embed] BBCode
Replies: 2
Views: 1647

New [embed]...[/embed] BBCode

As an alternative to the long-standing [ tube]...[/tube] BBCode, we now have the [ embed]...[/embed] BBCode. This allows you to embed videos from other sources in addition to YouTube, e.g. Vimeo, and allows you to add an optional start time and/or end time, in seconds. For example: [ embed]https://w...
by weber
Wed, 25 Sep 2019, 18:02
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2652
Views: 579078

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

I have moved all posts about PIP repairs and hardware modifications, to the topic that was called
"PIP Inverter Error "error 09" bus soft start failed", which has now been renamed PIP inverter repairs and hardware modifications.
by weber
Mon, 23 Sep 2019, 20:07
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

Hmm. I just learned 3 good reasons why the next larger multiplier should not begin with X. 1. When you pronounce it, it will sound like it should be spelled with a Z, and so it can be confused with Z for zetta. 2. When you write a symbol X, some people will assume it is the symbol for "exa". 3. A sy...
by weber
Sun, 22 Sep 2019, 15:21
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

I'm a complete nerd so I love this post. Especially Claude Litre :D You learn something new every day! Here's one for us nerds, that I just learned today. You know those prefixes for really humongous quantities, like tera, peta, exa, zetta, yotta, that are increasingly seen attached to "joules" or ...
by weber
Fri, 20 Sep 2019, 07:57
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

galderdi wrote:
Fri, 20 Sep 2019, 07:28
My car gets forty rods to the hogshead, and that’s the way I likes it
What's that in furlongs per firkin?
by weber
Thu, 19 Sep 2019, 13:24
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 469
Views: 41561

Re: PIP inverter repairs and hardware modifications

Walde wrote:
Wed, 18 Sep 2019, 00:23
Question to all have apparently the resistor R250 defective can give me one of the value of the resistor R250 in ohms. (Board is 48V)
R250 is 30 kilohms.
by weber
Wed, 11 Sep 2019, 20:49
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2652
Views: 579078

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

Q1 should I replace capacitors and MOS-fets or ditch my plan to make a 16S pack and make a 15S4P or even 14S6P even though that will make it more difficult to use the existing hardware. I recommend you use 14S if at all possible. Replacing the capacitors and MOSFETs is a terrible job, and even the ...
by weber
Mon, 09 Sep 2019, 14:42
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 590
Views: 53157

Re: Prelude conversion project - some questions

The regen braking is good, but it's almost worth adding a switch which doesn't activate the brake lights. 5 or 6 kW isn't much braking power. It certainly feels like an auto in that will 'run on' once you are up to speed. So it will take some care and slight change in driving style. Is there any po...
by weber
Wed, 04 Sep 2019, 00:32
Forum: Admin Notices
Topic: Avartarless
Replies: 4
Views: 842

Re: Avartarless

I see the picture in my account settings. So you see my avatar in these posts? No. I did not see your avatar in any post, including all your old posts. It probably disappeared from your posts with the last upgrade of the forum software. I just restored your avatar by saving it and reuploading it. I...
by weber
Mon, 02 Sep 2019, 07:11
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 590
Views: 53157

Re: Prelude conversion project - some questions

Congratulations Chris. Well done.

I was wondering why such a long precharge time. We do it in half a second in the MX-5. But I see you have no choice. It's built into the Greatland inverter.
by weber
Sat, 31 Aug 2019, 15:15
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

A correction: I mistakenly wrote in the original article: "People have died because drug dosages were described using "mcg" as an abbreviation for micrograms instead of the correct µg." This is not correct. I misinterpreted the problem. The actual problem is with badly-hand-written µg, perhaps looki...
by weber
Sat, 31 Aug 2019, 12:00
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

While researching the original article above, I spotted a symbol with the wrong case, in a table of unit symbols on the website of NIST, the premier organisation for units in the US. I emailed them about it, and received a very nice reply almost immediately, thanking me and telling me they had fixed...
by weber
Sat, 31 Aug 2019, 10:10
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

I deliberately didn't get into the finer points of presentation in the original post above, like the space between the number and the unit symbol. I wanted to keep it as simple as possible while addressing the things that actually alter the meaning , namely using the wrong case, adding "s" for plura...
by weber
Sat, 31 Aug 2019, 08:36
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

Hi 4springs. I applaud your use of megametres (Mm) to give rounded odometer readings, and I encourage everyone to do so. I say "rounded" because I wouldn't want to see decimal fractional parts of megametres like 123.456 Mm. That would be better written as 123 456 km. Part of the reason the entire Au...
by weber
Fri, 30 Aug 2019, 16:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 469
Views: 41561

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

Hi all, I was hoping someone would be able to provide me with the value of capacitors C152 - C162 in a PIP-4048MS (C152 in Coulombs partial schematic on page 71 of this thread dated Thu, 13 Jul 2017, 21:17) as I managed to damage one of mine while cleaning the pcb during repairs and my old eyes don...
by weber
Fri, 30 Aug 2019, 07:12
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

I'm a complete nerd so I love this post. Especially Claude Litre :D You learn something new every day! Thanks Chuq. :) And don't forget, next time someone writes that they have a "144 v battery", you can reply: So it only stores 144 vreebles — the amount of heat it takes to raise one blintz of halv...
by weber
Fri, 30 Aug 2019, 07:01
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

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

I stopped correcting Giles on RenewEconomy whenever I would read about a '100 MW battery'. It got to be tiresome. What's wrong with "100 MW battery"? It's spelled correctly, and batteries do have power limits as well as energy capacities. Particularly large battery modules that include management s...
by weber
Thu, 29 Aug 2019, 18:42
Forum: General EV Discussion
Topic: How to tell a kilowatt hour from a kelvin week henry
Replies: 34
Views: 3714

How to tell a kilowatt hour from a kelvin week henry

... or a nanometre from a nautical mile. This is about correct spelling of the symbols for units of measurement. I expect some of you will think this is mere pedantry, but please bear with me, particularly if you'd like your writing to appear more professional, or if you simply want to be respectful...