Non invasive 3.0 w/h voltage measurement

Submitted by Guest on Sat, 03/12/2011 - 11:12

Hi,

It's possible to use shematic for non invasive 3.0 without voltage measurement ?

It makes sense or not?

If yes, how adapt the code ?

Regards.

Submitted by glyn.hudson on Sun, 04/12/2011 - 11:41.

Yes, you can use just the CT to make apparent power measurements assuming PF=1 and assuming the voltage is constat. The emonTx firmware example does just this. Just strpip our the RFM12B wireless code if it is not required: https://github.com/openenergymonitor/emonTxFirmware/tree/master/emonTx_SingleCT_Example_

Submitted by Niii (not verified) on Sun, 04/12/2011 - 18:15.

I will try that, thanks for information :).

Submitted by Niii (not verified) on Sat, 10/12/2011 - 16:26.

Hi
Variable "emontx.supplyV" is used in the calculation.
If voltage is constant, I have to set it to 1 ?

Regards

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