AnsweredAssumed Answered

ADE7880 problems with THD readings on utility

Question asked by ruan on May 17, 2013
Latest reply on May 23, 2013 by hmani

Hi,

 

We have set-up the ADE7880 through I2C and everything is functioning correctly when connected to 3-phase calibrator.

 

However when we connect the ADE7880 to the utility the THDv value rises and falls from 1% to 8% and 8% to 1%, respectively.

 

We have verified that the utility do not go over 3%. (verified with other power meters).

 

Something is very weird!

Why when connected to calibrator it gives correct values but not when connected to Utiltity (power provider).

 

 

Thanks

Outcomes