ADE7880 problems with THD readings on utility

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

Parents Reply Children
No Data