With 44 large 12V SLA batteries in series you are in ball-lightning territory with the power available, its pretty scary how much is available in a fault condition, perhaps a megawatt or so - that's a flashover you will not survive unscathed should anything go wrong. Worried about the marine battery voltage over night after an overcast day, I ended up adding an Arduino running a crude clock which put the Pi to sleep at night and woke it up in the morning. The thread did not finish with good recommendations, so I post this. Such a system if used is needed to be installed for every string of batteries - this is never going to be cheap. In this project, we will be making an IoT-based Solar Power Monitoring System by incorporating the MPPT (Maximum Power Point Tracker)- based battery charging technique, which will help to reduce charging time and improve efficiency. system May 27, 2011, 7:53pm 1 Hello I found an article in the read-only forum regarding 12 Battery current monitoring. Some multimeters have opto-isolated serial/USB interfaces that could be used to help with data-logging. Then you could place the meter and the switch in a suitably isolated transparent box and all you'd need to do is rotate between the individual cells. A qualified electrician needs to be involved, that's a given. 44-way switches are not commonplace, and a specialist version would probably have to be bespoke. The only way I can see to do this is to source some 1kV+ rated wiring, and a special high voltage rated multi-way dual-gang switch thats break-before-make. It can also hold an enormous arc / flashover capable of starting a building fire.Ī quick and dirty solution to this problem is incredibly dangerous. The voltages are well above the ratings of many kinds of cable insulation even, so automating this setup isn't going to be simple or cheap.Īre you aware of the risks of measuring this by hand? What category of isolation does your meter have and what PPE are you using? 600V DC can be instant death. In that case this is some serious engineering, those are very lethal voltages and DC too which is much more dangerous than AC. If you see my first post i am talking about 30 - 44 batteries in series.
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