NoordSolar

Thanks Youda! Do you know if the new 24V ones can be strung in series ?

The GNB Li-Ion battery is the one made by BMZ . Very surprised by its poor performance.

Thanks Youda , now the next thing is where do you find the latest firmware? How do you know if you are on the latest firmware - these Pylontech guys are super secretive which worries me a greatly

The lastest report shows the Pylontech much superior. http://batterytestcentre.com.au/wp-content/uploads/2017/07/Battery-Testing-Report-7-September-2019.pdf?fbclid=IwAR2ezXo6Ade9gJi9iaTIzuMWZPSwmO8zrgbHWiXp42399CRMN1BGe88rkmk

Cool , thanks Youda - - to install do you just run BAtteryView?

Where does one get the access software to Pylontech batteries ? It looks like this software locked behind the great Firewall. Seems like copies have escaped , however I can't findit yet ? See Batteryview.exe here

Anyone tried these out, http://en.naradapower.com/upload/at/file/20190118/1547778402112657831D.pdf, they are available here to order 5000 cycles at 50% DOD

Here is a spec sheet , see fig 3 for transfer characteristic http://uk.rs-online.com/webdocs/0d13/0900766b80d1305c.pdf

Its a phase controled device - I so instead of giving the element a full 180 deg cosine waveform per 50 hz cycle it will for instance switch on at say 90 deg so providing zero current first the first 90 deg and full current the next 90 deg . and so one every 180deg . So in this example effective power if 50% of the nominal full power for a complete waveform

HAve not searched for specific documentation for this but I see the usage as such that when you have an excess of solar say 1 kw from 11am to 2 pm you can run your geyser effectively as a 1 kw unit for 3 hrs as apposed to a 3 kw unit for 1 hr . In a typically household you will seldom get 3 kw of surplus solar power but often will get 1 kw (or what ever number you choose ) You could permanently set the device to a fixed number or varying it trough a controller of a rheostat - easier than retro fitting a 3 phase element to a single phase geyser and selectively switching elements in and out to match available power . This is all to avoid using battery power as battery usually costs more than Escom per Kw ( excluding "availability fees ".

http://www.em.co.za/downloads/J-Timers-and-control-relays.pdf , Page J15 Item S04 or others around that page in catalog

CBI Either on or off , not proportional control

Has anyone tried any proportional power controllers to accurately dump available solar power into a geyser. Devices usually chop up the mains 50 hz waveform. What you can achieve is a fine tuned load matched to available power . Problem is geyser is usually 2 or 3 kw element and if you want to maximize self consumption with only 1 kw of excess PV power you have to import 1 -2 KW of power , - it would be better to run at 1 kw at 100% solar ( duration to get to desired temperature will be higher ) . An example http://www.solarcontrols.cz/en/wattrouter.html also http://www.directindustry.com/prod/celduc-relais/product-12114-525556.html ( available from ElectroMechanica )

Ian unfortunately the Zeversolar device is not on the City's approved list, not sure why as its sold in Australia and Germany. Proinso have stopped bringing them in

Richard , I assume you have the Landis and Gyr meter being on SSEG. Its a very interesting question which I have also pondered about. Cant seem to find anything on the Landis and Gyr website. I have a friend recently on SSEG and are awaiting the first meter readings. Do you have any idea how long it takes for the meter to be connected to the city portal and available for the consumer to read