jonescg's home battery storage system

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jonescg
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Re: jonescg's home battery storage system

Post by jonescg »

T1 Terry wrote:
Fri, 22 Feb 2019, 10:38

You can even set 3 of the inverters up to provide 3 phase power if you want and double up on the number of inverters on the single phase you want to power the rest of the house from, so a mix and match approach is quite possible. Each inverter has an 80 amp max output MPPT controller built in and additional 60 amp output controllers can be added as required.

T1 Terry
Yeah I know the ones - they look solid but I don't have the real estate on the wall of the house unfortunately - otherwise they are a good option.
I'm confident the GW5000-ES inverter can work, provided almost all of the loads are on the same phase as the inverter. I'm happy to have the shed on its own 32 A, single phase supply off the grid since I rarely put big loads on that circuit. It would be a good sport for a 32 A EV charger, and just charge the car on a simple 10 or 15 A supply most nights.
So long as there's about 6 kW of PV I can shift some loads to the middle of the day.
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jonescg
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Re: jonescg's home battery storage system

Post by jonescg »

Hi Everyone,

I plan on selling this Power Cabinet as I really can't use it in a household situation (bit daggy really). It stores an honest 8 kWh.

Happy to sell the cabinet complete for $2000 ONO. Doesn't include the inverter as that's not mine, but it can include the charger if you need it.
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T1 Terry
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Re: jonescg's home battery storage system

Post by T1 Terry »

Hmmmm...... If I'd known that was the price, I would have bought it while we were over there and found a spot in the Hino some where so we could bring them home. Freight would probably make it prohibitive now, the premium on shipping lithium batteries is the killer.

T1 Terry
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jonescg
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Re: jonescg's home battery storage system

Post by jonescg »

T1 Terry wrote:
Wed, 24 Apr 2019, 18:54
Hmmmm...... If I'd known that was the price, I would have bought it while we were over there and found a spot in the Hino some where so we could bring them home. Freight would probably make it prohibitive now, the premium on shipping lithium batteries is the killer.

T1 Terry
I believe we did discuss it in the shed, but your other half indicated something along the lines of "You already have enough batteries Terry!" :P
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jonescg
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Re: jonescg's home battery storage system

Post by jonescg »

By the way, shipping to SA might be about $200 by road freight.
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Re: jonescg's home battery storage system

Post by jonescg »

I ended up buying Rob Dean's AVASS battery for my home storage needs, using the proceeds from the sale of my PowerCabinet.

Since it will be a while before I am ready to install it, I put them all in parallel and started charging at about 18 amps and 3.7 volts.

I would check the voltage periodically and adjust down as they approached the maximum set point. Eventually I had a 7300 Ah cell at 3.54 volts.

Now there should be no trouble with maintaining balance on this pack.
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Re: jonescg's home battery storage system

Post by jonescg »

I am a bit closer to enacting my home storage and solar system here in Kalamunda.
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I have recently acquired 7.8 kW (peak) of solar using Canadian Solar CSI-K-280 W panels I bought for $1900 from an auction. Easy to remove from the back of the ute when you have a hoist :)
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These are a split panel with 120 cells, or two half panels of 60 cells each, in parallel. So it manages with shade a little better than otherwise. You can see one off to the right of the above image.
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I plan on installing 14 in series on each side of the house - one east one west. Conduit and saddles to keep the pedants happy.
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The isolator is a 4-pole unit so I can switch both off with a single unit. Best of all the array is 3 m away so I don't need a silly rooftop firestarter.
4 pole isol and drip loop.jpg
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At least I'll have the panels up and the isolator wired up ahead of the front awning being built. This will be a skillion roof from the front of the house which provides a bit of shelter on the northern side, and it protects the inverter and battery from excessive sun/rain. Once this is built I can start to make plans for the inverter and battery.

So far I'm not seeing any disadvantage to the MPI 10 kW inverter. It does 3-phase, it charges a 48 V battery, it's got DRM options, it even exports to the grid. My major AC loads are the air conditioner (4 kW) the shed (up to 6 kW, but typically less) and an EV charger (up to 7 kW). At least two of these will be on at the same time on occasion.
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Re: jonescg's home battery storage system

Post by mark_hetho »

That is a darn good price on the panels. I might have to start frequenting auctions!

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Re: jonescg's home battery storage system

Post by T1 Terry »

I thought I did well at $3,600 for 10kW of Tindo series 3 panels second hand. They are 250w panels, so 40 of them to build the 10kW array. Picked them up with the VW Kombi on the really hot day SA started to burn itself to the ground. Way too hot to be travelling in a vehicle without air con, but the air cooled motor handled the long climb up the Adelaide hills easily ..... just not fast :lol:

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Re: jonescg's home battery storage system

Post by jonescg »

So it looks like the DRM0 condition is the only requirement from Western Power - the ability for them to disconnect the inverter during times of high voltages and low demand. All other DRM conditions are 'nice-to-haves' at this stage.
So does the MPI 10 kW inverter have that feature? Or is it purely voltage dependent? That is, it will simply stop exporting power when the AC line voltage exceeds 260 V AC? Pretty sure they want the option of telecoms to switch it off...
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jonescg
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Re: jonescg's home battery storage system

Post by jonescg »

Made a good start on the solar for my house - all fixed down and wired up. I have 14 in series on the east, same again on the west. The cable entry point to the roof is under the last panel, which was one panel further forward than it should have been, hence there's 12 panels on the upper row, and just two on the lower. I have room for one more panel on each roof just to bump the operating voltage up a bit. My goal was to keep them further back as best I can because of the large shady Marri tree to the north of the house, but it's probably not going to make a huge difference.
Panels up.jpg
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The grout has fallen out of the ridge capping after 40 years, so I reckon it's time to get that fixed shortly...
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Re: jonescg's home battery storage system

Post by nuggetgalore »

'The grout has fallen out of the ridge capping after 40 years, so I reckon it's time to get that fixed shortly..'

I was sorry I did not get the (concrete tile) roof painted and pointed before the PV array was mounted.
It appears you made the same mistake......what a nuisance (never mind he won the cup!)

Cheers every body, happy new year.
tinker

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