Home » Forums » Archived: General Discussion

Measure 3 phase current, voltage and power factor with ACS712

Submitted by itauty on Mon, 19/10/2015 - 16:07

Hi

I am starting a project and i want to monitor the voltage , the current and the power factor  of a triphase synchronic motor. The current will be measured using  3 ACS712 and i have 3 transformers ac-ac 120 to 9V. Any one with a skatch of programming this with arduino. Thank you for the help

‹ Getting weather station data into the emoncms? Anyone got good ideas? Spikes in measured Power when powering on emonTX ›
»
Robert Wall's picture

Re: Measure 3 phase current, voltage and power factor with ACS712

Submitted by Robert Wall on Mon, 19/10/2015 - 16:21.

The ACS712 has been mentioned many times on this site. Is there one in one of those threads that you could use?

If not, you can still use emonLib if you are content to have discrete samples of each phase in succession, otherwise I recommend you look at Robin Emley's 3-phase sketch listed at http://openenergymonitor.org/emon/node/1757, but you will need to work on that to get current and power factor.

»

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.