Search found 3778 matches

by coulomb
Tue, 03 Dec 2019, 09:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 365
Views: 12167

Re: sunny day but 0V from PV

I think it's an hardware problem, but I’m not so sure. I've not found solutions in the forum so I ask if you have any idea. To answer your actual question belatedly, it does sound like the SCC board is faulty. It doesn't sound like your panel voltage is too high, so that can't be the cause. It's po...
by coulomb
Tue, 03 Dec 2019, 08:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

I moved a post from @McMajan re a likely hardware problem preventing his inverter-charger from seeing the PV panels here. In my replay, I mention how the red and black wires running to the SCC are not battery connections.
by coulomb
Sun, 01 Dec 2019, 07:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 365
Views: 12167

Re: sunny day but 0V from PV

If the board is dead, can I bypass it connecting the out of external mppt ?(I think the output is the red and black cables in the middle of the board). As Paul says, connect the external MPPT directly to the battery. The red and black wires, as far as I can tell, are both nearly at battery positive...
by coulomb
Sat, 30 Nov 2019, 18:10
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 506
Views: 35574

Re: Prelude conversion project - some questions

If it is overweight what can you do to make it pass? More seriously, my understanding is that you might: End up with a lower luggage capacity Have to register it as an n -1 seat vehicle, where n is what you tried for last time (might have to remove seats and/or seat belts) Keep the same luggage cap...
by coulomb
Thu, 28 Nov 2019, 05:47
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

Re: Bricked or not bricked...this is the question....

McMajan wrote:
Thu, 28 Nov 2019, 00:41
SURE, if I'll write the software I'll share with you, but before I need a bit of time to understand how the blocks are generated (they are not only part of hex file).
Excellent. PM me if you need some info from the bootstrap loader end (permanent part of the firmware that performs the reflashing).
by coulomb
Wed, 27 Nov 2019, 06:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

Re: Bricked or not bricked...this is the question....

So I removed the communication board and I've replace it with an Arduino UNO where I've removed the MCU (doing this you use Arduino as a basic USB to serial converter). So I conneted TX <->TX, RX <-> RX ang GND <->GND. In this way you are NOT ipto-isolated, but you can test if the problem is the co...
by coulomb
Tue, 26 Nov 2019, 06:46
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 157
Views: 10444

Re: PIP-5048MK inverter

Hello from Bulgaria Welcome to the forum! I think to buy 2 parrallell PIP5048MK to change my old inverters. Did PIP5048MK will support grid assist when work in parrallell? Two PIP-5048MKs in parallel will operate much like a single PIP-5048MK, but with a higher power limit. I assume you will connec...
by coulomb
Mon, 25 Nov 2019, 06:28
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 157
Views: 10444

Re: PIP-5048MK inverter

Im running two parallel PIP 5048MK in one fase. is there a possibility to switch the slave inverter into some sleep mode? some power saving, and for example in case of higher load higher then 4000 W then it will wake up? then if load is lower then 3500 it automatically jump to energy safe mode? Web...
by coulomb
Sun, 24 Nov 2019, 18:46
Forum: General EV Discussion
Topic: EV-Only "Fuel" Tax On The Govt Agenda
Replies: 20
Views: 389

Re: EV-Only "Fuel" Tax On The Govt Agenda

The tax will be more than the tyres. Exactly. So it will have to be introduced progressively (or else it's unfair to those who happen to need tyres right now), and it will seem unfair. "I get a measly 40¢ per litre off my petrol, but tyres have gone up more than double!" Yet it could be totally rev...
by coulomb
Sun, 24 Nov 2019, 18:03
Forum: General EV Discussion
Topic: EV-Only "Fuel" Tax On The Govt Agenda
Replies: 20
Views: 389

Re: EV-Only "Fuel" Tax On The Govt Agenda

Huh, that's outside the box thinking, great idea! Seconded! It also disproportionately taxes hoons ;) the tax will need to be more than double the price of the tyre itself This is probably the downfall. Such a noticeable tax would be a "great big new tax on everything" (because nearly everything ne...
by coulomb
Sat, 23 Nov 2019, 09:55
Forum: Tesla EVs
Topic: Elon Musk presents the new Tesla Cybertruck Launch
Replies: 3
Views: 173

Re: Elon Musk presents the new Tesla Cybertruck Launch

I wonder how it would go after a really bad accident. Sure, the other guy is probably going to come off second best (unless it's another cyber truck), but I can see you still will have the need for some repairs under some circumstances. Traditional panel beaters aren't going to know how to repair on...
by coulomb
Sat, 23 Nov 2019, 08:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

Re: Bricked or not bricked...this is the question....

This is my first post Welcome to the forum. In the past I upgraded the firmar to version 73.00c withtout any problem. Now, trying to update to 73.00e the inverter had some big problems. Interesting that you were able to perform a firmware update in the past, but not now. The procedure start correcl...
by coulomb
Fri, 22 Nov 2019, 19:23
Forum: Charging Infrastructure
Topic: Primewest Gwelup Veefil DC in WA
Replies: 3
Views: 415

Re: Primewest Gwelup Veefil DC in WA

Error 131 According to a document (that perhaps you uploaded somewhere, Joseph), that's "Problem detecting the grid supply". Doesn't sound like "something then melts" to me, unless it's a fuse or breaker either supplying the Veefil charger or right after the mains connection inside the Veefil. It's...
by coulomb
Wed, 20 Nov 2019, 12:24
Forum: Tesla EVs
Topic: Inside a Model 3 battery
Replies: 7
Views: 2230

Re: Inside a Model 3 battery

I found an old battery/YouTube specialist called Jack Rickard Jack is well known to most of us old-timer EVers. I don't know that I'd call him a specialist, but he's been good for the EV community. I find his blogs easier to digest than his videos. To suggest he’s a character is some sort of unders...
by coulomb
Tue, 19 Nov 2019, 10:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

Coulomb, can you please spell out what you mean by overshoot. What quantity overshoots what threshold, and why is this bad? Solar charge current is the quantity that overshoots. It's bad because it could damage the battery (unlikely because it's short duration), or cause the BMS to nuisance-trip. I...
by coulomb
Tue, 19 Nov 2019, 06:15
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

Put 3 panels in series (roughly 40V each) to get as close to 145V SCC as possible - then put multiple strings of these in parallel I don't agree with the idea of getting as close as possible to 145 V; the solar charge controller starts derating (using less power than rated) after 130 V, and will us...
by coulomb
Sun, 17 Nov 2019, 09:33
Forum: Batteries, charging, management and monitoring
Topic: portable DC chargers
Replies: 4
Views: 214

Re: portable DC chargers

Are these or similar available in Au? At a price that is not prohibitive? I think you'll find that a 22 kW unit is a bit too bulky and pricey for most. To give you an idea, here is a 24 kW wall DC charger available in Australia: https://evse.com.au/product/24kw-dc-wallbox-single-ccs2-rapid-charger/...
by coulomb
Thu, 14 Nov 2019, 06:23
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 120
Views: 10526

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

Coulomb and I have reason to believe that the high frequency transformer has a turns ratio of 8:1 in 58.4 V variants and 7:1 in 64 V variants (of any 5 kVA model). And consequently, we suspect the boost-converter has to work harder in the 64 V variant when inverting. In our investigations yesterday...
by coulomb
Wed, 13 Nov 2019, 16:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

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, Lower Limit 38,4V It would be great to change the PIP-5048MS to this values to bring a hugh mass of batteries into second use applic...
by coulomb
Wed, 13 Nov 2019, 06:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

But just for clarification: Are my original following statements not incorrect? In the morning, any PV would supplement my consumption (battery still empty) Once PV exceeds my consumption, it would charge the battery Would this not mean mixing sources in the morning? As my Axpert cannot do this, wo...
by coulomb
Tue, 12 Nov 2019, 21:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

It is listed as 145V if I am not mistaken. Yes, that's an ordinary Axpert MKS PF0.8. Just like my PIP-4048MS. So that means if I have a spike in my consumption that exceeds my available PV (e.g., coffee machine or vacuum cleaner), it would then not only stop charging the battery but if required eve...
by coulomb
Tue, 12 Nov 2019, 18:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 483981

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

I am a new member from South Africa :) Welcome! I have an older 5kVA / 4kW model ... Ah but what model? See next question. I have read in other places on the web that my inverter is not able to mix PV and grid sources. Is that correct? It depends if it's a 450 V max SCC model or not (i.e. it's an e...
by coulomb
Mon, 11 Nov 2019, 19:58
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 506
Views: 35574

Re: Prelude conversion project - some questions

Personally, I don't like to see permanent traction battery voltage in an unattended vehicle. I would prefer to see ELV segmentation, which I think of as <120 VDC, except when the car is on, and with a special exception for periodically re-charging the auxiliary battery when needed. Even then, there ...
by coulomb
Sun, 10 Nov 2019, 12:50
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 506
Views: 35574

Re: Prelude conversion project - some questions

if so, a cap and a double pole relay could be built cheaply and reliably to create 24v for turn on, then 12v for running. Surely there is an arrangement with some diodes and a capacitor that could eliminate the relay. You do need a push-pull inverter capable of coil current however, and your drive ...
by coulomb
Sat, 09 Nov 2019, 07:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 120
Views: 10526

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

I replied to this yesterday, but it doesn't seem to have come through. I saw in https://powerforum.co.za/topic/4288-axpert-inverter-switching-to-battery-power-at-midday/ that there is a firmware update for the Axpert MKS II. I've got the MPPSolar 5048MG (@71.40) so I guess can flash this Axpert MKS ...