Noobie Posted December 28, 2016 Share Posted December 28, 2016 I have been asked by a family friend to visit his guest house/conference centre to discuss what options are available to him to reduce his Eskom electricity bill. The facility has a 300 kva back up generator, so backup is not required. I was thinking along the lines of a grid tied inverter with a couple of PV panels on the roofs to generate electricity during the day. First step is to measure and log the usage patterns of the site, can anyone recommend a 3 phase data logger that can record consumption for a month or so? Quote Link to comment Share on other sites More sharing options...
___ Posted December 29, 2016 Share Posted December 29, 2016 3-phase Rs485 meter, like the SDM meters from eBay or the Carlo gavazzi?Sent from my GT-I9195 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Noobie Posted December 30, 2016 Author Share Posted December 30, 2016 Thanks Plonkster, I will look into the Carlo Gavazzi units Quote Link to comment Share on other sites More sharing options...
Gerald_db Posted December 30, 2016 Share Posted December 30, 2016 I use a 3 phase efergy unit at my business. Works like a dream.Sent from my SM-G920F using Tapatalk Noobie 1 Quote Link to comment Share on other sites More sharing options...
___ Posted December 30, 2016 Share Posted December 30, 2016 9 hours ago, Noobie said: Thanks Plonkster, I will look into the Carlo Gavazzi units I have an EM24 unit, 63A 3-phase. Overkill for my application but got it for a good price. Normally they are around 200 Euro. I think the Eastron SDM series modbus meters are a lot less expensive and will do the same job. I just don't know them, @JDP is the man to talk to there. You may also need a computer to read the meter, although the CG meter is pretty capable on its own, keeping stats for average, min and max without the need for a computer connection. A Efergy clamp meter, though not perfectly accurate, will be cheaper and get you ballpark numbers too. Depends how much you want to spend on this :-) Chris Hobson and Noobie 2 Quote Link to comment Share on other sites More sharing options...
Guest Posted December 31, 2016 Share Posted December 31, 2016 Plonky the modbusmeter I use is R400. Efegrgy is R1000 plus. But you need to add a pi or pc to log the data. Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted January 1, 2017 Share Posted January 1, 2017 19 hours ago, JDP said: Plonky the modbusmeter I use is R400. Efegrgy is R1000 plus. But you need to add a pi or pc to log the data. will it do 3phase? Quote Link to comment Share on other sites More sharing options...
Guest Posted January 1, 2017 Share Posted January 1, 2017 Yes you get the 3 phase meters as well. Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted January 1, 2017 Share Posted January 1, 2017 4 minutes ago, JDP said: Yes you get the 3 phase meters as well. No. Does your meter work on 3phase? Quote Link to comment Share on other sites More sharing options...
Guest Posted January 1, 2017 Share Posted January 1, 2017 I use a single phase one. Quote Link to comment Share on other sites More sharing options...
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