Search found 146 matches

by doggy
Thu, 16 May 2019, 13:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

In a LF inverter, the transformer can either be a toroid (with iron powder core or similar) or a laminated plate type using steel. The toroid will almost always be more efficient. The windings can be copper or aluminium or some mixture. Aluminium is lighter, more difficult to connect and with higher...
by doggy
Wed, 15 May 2019, 19:47
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Harold the remote is a switch and three leds. I do not have the remote display. I have the black push buttons. Sorry I am away from home so no photos.
Regards,
Dave
by doggy
Wed, 15 May 2019, 11:41
Forum: Renault
Topic: R-LINK Accounts
Replies: 7
Views: 161

Re: R-LINK Accounts

Hi Lou, I'm glad there are other Microsoft-free houses out there. Well done. I also have a Linux house. However, I do also have a mac sitting in the spare room unused and also a virtualboxed Windows 10 instance for my wife's genealogy. So, I have to either use the Windows or fire up the old Mac. Che...
by doggy
Tue, 14 May 2019, 15:46
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Terry, the fans (one at each end) are only on when under load. I am sure they could be replaced with something quieter. I do not think there is a tacho on the fans- they seem to be on or off. A useful addition probably would be speed controlled fans of a quieter variety. I think there is a versio...
by doggy
Tue, 14 May 2019, 14:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Terry, there is nothing about paralleling in the user manual nor anything else I have seen. Also, there is no evidence of any such control signals ready to be taken off and brought to the outside world. So I would be quite confident that the answer is "no". As well as the idle current being low, ...
by doggy
Sat, 11 May 2019, 20:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

One RJ11 is remote control including 3 LEDs and one switch
The other one is remote LCD
The nine pin connector is the COM port
Regards,
Dave
by doggy
Sat, 11 May 2019, 15:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Harold,
Mine has the three ports. However, only the RJ11 remote control seems to be connected.
I think remote control is also an optional extra which (fortunately) I have.
Cheers,
Dave

PS- did you get Google LENS going to see if there is anyone in France (or Europe) selling them?
by doggy
Sat, 11 May 2019, 10:44
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi hary, It was longer ago than I remembered- in 2009/2010 and the processor was a PIC2620 running on a 10MHz crystal with a PLL so it ran at 40MHz. There were no PWM outputs with deadbands etc so I had to do a lot in assembler code at the interrupt level. Nowadays, that is a low end processor and e...
by doggy
Fri, 10 May 2019, 14:07
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Hary, You do not need to worry about Magic Sine Waves. However, they are very clever and I have implemented using them and was delighted with the result. They are derived from and related to fourier transforms and LF inverters would use some approximation to that. Programming was somewhat complic...
by doggy
Fri, 10 May 2019, 05:22
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi hary, This LF inverter is cheaper than I could design and build. Maybe I could assemble the parts for that cost but even that is doubtful. Then factor in testing, blowing up a few parts etc- I have other things I wanted to do with my time. The maximum I have done myself is 3KVA but I wanted aroun...
by doggy
Thu, 09 May 2019, 05:36
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

I will normally use the inverter switch on its remote control. This also has a simple set of contacts which I can control from a small relay without touching the inverter itself. However I am not doing this now. You could do it very easily if you get one. The remote control gives access to the conta...
by doggy
Wed, 08 May 2019, 16:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Sorry, no experience with solar driven pumps. For my solar hot water (32 evacuated tubes) I use a small 30W 240V pump. Also have a big several HP Grundfoss to lift water from a 5,000litre tank to the top of our property (about 30meetre lift).
The Aliexpress pump looks nice.
Cheers,
Dave
by doggy
Wed, 08 May 2019, 15:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Hary, 35mm2 is okay but gets quite warm. I have a 200A contactor between the inverter and battery. This is controlled from a FET in my BMS. Uses about 200mA when on. The BMS will cut off the inverter if any cell goes too low ( at the moment I stop at 2.9V but I might reduce that to 2.7V under loa...
by doggy
Wed, 08 May 2019, 10:14
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Hary,
Sounds good.
I have 35mm2 cabling at the moment but am upgrading it to 75mm2 because 220amps is a bit much for 35mm2. This is to feed the inverter.
Cheers,
Dave
by doggy
Wed, 08 May 2019, 03:47
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Sorry, I use Android and Linux. Also, I do not know what microprocessor they use. I would have to take out more boards to see and I do not want to do that. I agree the 6kW unit might be best for your needs. It is not available in Australia but I would have bought it if it was available. I assume you...
by doggy
Tue, 07 May 2019, 19:24
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi Hary, The other problem you have is import duties, tax and handling fees. I spent half of each of the past 8 years in France and twice imported things and the additional costs (on top of DHL) were a real killer. Have you tried a photo of the inverter using Google Lens to see if someone in France ...
by doggy
Tue, 07 May 2019, 11:50
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Hi, I have not tried it with such a load. However they claim you can start a 1.7HP motor without problems. That's a 1.3KVA load with a likely startup of 9kW. My BMS is my own design. It is running on my other battery which is a 26V 180A CALB bank. The charger is AC with an (almost) lossless ideal di...
by doggy
Tue, 07 May 2019, 11:31
Forum: Renault
Topic: New Tyres
Replies: 25
Views: 477

Re: New Tyres

The manuals for our last three cars (all European) have said not to rotate front left/right.

When I was young, some decades ago, one always did a 5 tyre rotation which involved right/left swaps.

Cheers,
Dave
by doggy
Mon, 06 May 2019, 16:14
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Final test. Charging. Set it for Lithium and I was able to set a max voltage which, when reached, stops the charger. Can also set a low volts value to start charging. Delivers slightly more than the specs. Max was a continuous 80amps at 88% efficiency. Claimed max 75A Efficiency at 55amps was 90% (s...
by doggy
Sun, 05 May 2019, 11:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: AVASS cells 2nd lot
Replies: 12
Views: 317

Re: AVASS cells 2nd lot

Hi Coulomb,
Thanks for that info.
I might compromise slightly and use SS with some copper washers.
I have to replace the supplied SS bolts so I can add my BMS boards over the vents.
Cheers,
Dave
by doggy
Sun, 05 May 2019, 11:16
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Given this is about welding with an offgrid inverter, this is a little out of place. However I have just completed almost an hour of testing charging my Zoe at 20 and 21 amps. Power factor was very close to 1. The inverter had no problem at 4.8kW nor at 5kW. I ran it at 5.5kW and after half a minute...
by doggy
Sun, 05 May 2019, 10:57
Forum: Renault
Topic: New Tyres
Replies: 25
Views: 477

Re: New Tyres

Wow, that is excellent. Hope mine does as well as that.
Regds,
Dave
by doggy
Sun, 05 May 2019, 06:33
Forum: Renewable Energy and Storage (Non-EV)
Topic: AVASS cells 2nd lot
Replies: 12
Views: 317

Re: AVASS cells 2nd lot

A question. Why are people using SS bolts with the AVASS cells? Why did the AVASS people use SS? I have large capacity battery banks on two different boats and have always used copper for busbars and brass bolts/nuts. The conductivity of brass, thougth not as good as copper is much better than SS. S...
by doggy
Sat, 04 May 2019, 16:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

Waveform is quite good. I have tested the current waveform at low load, 2.2kW and 4.2kW and briefly 5kW. There is no visible distortion at zero load, or 1.0kW. There is a tiny amount at 2.2 kW- barely discernible. There is a small amount of distortion at 4.2kW. Basically a few small artefacts. I wou...
by doggy
Sat, 04 May 2019, 15:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 70
Views: 1186

Re: Is anyone using an arc welder with an offgrid system

I am in Australia now. We owned a small péniche in France for nine years but sold it last year. She was 115 years of age, 38 tonnes, 18metres x 4.4metres with two levels. So plenty of space. We travelled throughout France as well as Belgium, Netherlands and some Germany. We spent approximately 6 mon...