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I don't want to shunt it to earth, just block it from being present on the solar/battery lines. Just DC to one side of the diode and mixed AC and DC inside the inverter covers where it would involve removing an access panel to be exposed to the AC element on the DC lines.

T1 Terry

If you put enough paint and spin on a dead horse it will finally get up and run for a while. Look at the flow batteries from there first proper entry into the market back in 1980 - 86 by Maria Skyllas-Kazacos at the University of NSW. It had a rebirth in the late 90's and again around 2009 and the l...

Thanks Dave, so around the 3700w mark to run both air con units flat out, not bad at all. We installed a 12v 700Ah lithium battery a number of yrs back and the owner decided last summer that he should have an air con installed because he now had batteries that could handle the load. He installed a V...

For those with a Sumry or contemplating same: I now have my 5kVA unit running two LG split air conditioners. Each is 6,000W and the SUMRY handles both with ease, even on maximum cooling or maximum heating both running together. The Sumry is driven by 8x AVASS bus cells. Cheers, Dave I am assuming t...

Checked out the price for the 600vdc 60 amp Morningstar MPPT controller .... ouch, around the $2,000 mark, would something like this block the AC on the solar/battery lines https://au.rs-online.com/web/p/rectifie ... s/8776418/

T1 Terry

The output side of the inverter (240vac) must be isolated from the DC solar input, surely, otherwise there would be both 450vdc and 240vac on the same conductors and the solar isolators are only designed for max 500vdc so I'm not sure if they have an AC rating at all. The AC component is only from ...

Ah, interesting, I haven't even bought the MG inverters yet but I do have a couple of MS inverters with the lower solar open circuit voltage, will these have the same effect of AC on one leg of the solar to earth?

T1 Terry

This set up isn't intended to feed back into the mains or even be mains connected, it is for an off grid stand alone system or SPS as the Clean Energy Council calls it. The output side of the inverter (240vac) must be isolated from the DC solar input, surely, otherwise there would be both 450vdc and...

It would get you from our house to our workshop and back home again, maybe even twice. The hospital, doctors, dentist, 2 solicitors and 3 real-estate agents and 2 accountants, post Office, hardware store, 2 food stores, 2 bottle shops, 2 bakeries 2 pubs and a club are all on the same section of road...

I think with the particular inverter I'm looking at, PIP5048MG, the solar is boosted first, then enters what ever creates 240vac and 48vdc out of that. When the solar is not present, the inverter uses the 48v nom. battery voltage, so I'm guessing it boosts the 48vdc to what ever the feed in DC volta...

As far as the "Beaching itself" back when I worked for Western Road Bus Service, we had a bus that would bottom out mid way between the wheels on a few intersections with deep gutter drains that were part of the normal route. Rather than continually having the passengers freak out at the scrapping a...

So, back to the strange nom cell voltage thing. Can you confirm the end of charge battery voltage please Richard? My back of the envelope I'm doing my calculations on is getting rather hard to read now I've made so many changes

T1 Terry

So, 96 x 4.2v = 403.2v, so stop at 400vdc would keep the cells just under the 4.2v mark. So the series string needs 12 panels now for an STC open circuit voltage of 462vdc and an operating temp open circuit voltage of around 408v @ 50*C. The bugger now is the 462vdc open circuit with cold panels is ...

Terry - I think the Kona is either 96 or 98 cells in series - when fully charged it hits 400-407 V DC. So the 356v divided by 98 cells in series puts the nominal voltage at 3.63v per cell and 98 cells @ 4.2v = 411v. So the 407v is with the cells just below the 4.2v mark, but the 3.63v nom is a stra...

I found it after a few Google searches, 356v ... I'm guessing that is nominal so what is the nominal voltage of each cell? Non of the standard nom battery voltages divide evenly into 356v so maybe that is end of charge voltage? 86 x 4.135v = just short of 356vdc. The voltage is well within the solar...

Does anyone know what voltage the Kona battery pack is? I've been seriously thinking about a solar array wired to meet the voltage of my chosen EV so I can direct charge the EV battery. If the voltage is less than 450vdc then I can also use the EV's battery to power the inverter to run the house at ...

I wonder if you can get an add on package that includes the wings and tail .... and maybe a propeller so you can get up enough speed to take off into a headwind and glide to the next destination :lol: Solar powered and will travel 60km on a full charge, my plug in Prius is solar powered and will tra...

I know it isn't particularly fast charging, but caravan parks have 15 amp outlets. It is at least a last resort method of recharging and could be useful if over night stops were planned to use a caravan park cabin or on site van for the accommodation. Staying at a pub or motel would be another optio...

Make the steady out of aluminium and add bushings to take the initial shock loads at the joint ends. aluminium is a lot more forgiving than cast or even steel, it can stretch and compress small amounts that take the initial shock load. This is why high performance ICE engines use aluminium con rods,...

Something I've always wondered, if heat rises and cold falls, wouldn't blowing cold air above the battery pack and exhausting it below the battery pack a better method for cooling? I see all these cooling plates the cells sit on, but wouldn't that be the coolest part of the cell? Tesla run pipes up ...

20" wheels, sound suited to truck 22"wheels eh. Isn't that truck company Tesla now owns building just that? A hub motor capable of only 50kW would revolutionise the trucking industry. A prime mover has 4 rear wheels, that's 200kW on the ground, add a dolly to tow a trailer, that has 6 wheels on the ...

An RVD, not an RCD because an RCD will only work if there is an earth/neutral bond before the RCD. If you are never going to plug into shore power that will have its own RCD and earth/neutral bond, then get your sparkie to make the earth/neutral bond after the inverter but before the RCD. The proble...

Skip the copper stake bit, that is to make a connection back to the transformer or the power generator. You have the power generator on board in the form of an inverter. If the generator is a plug in device and has a fault to the metal frame and that is sitting on the ground, the stake will make a c...

Just a thought, they made small diameter paper filters for minis and other Leyland product as well as aftermarket filters, mainly aimed for use with SU and CD Stromberg type carburettors. One of those on Richard's drum fan suggestion would fit easy enough, but if you have a 12vdc supply available yo...

Thanks T1 Terry. Good ideas! I hadn't thought of air filters either so this morning I will be off to my local car spare parts place to see what they have. Thanks again Paul Something simple like the round air filter from the old 6cyl Holden is a big enough area to fit fans inside and cheap as chips...