I have some questions regarding the linecycle accumulation procedure.
1) When calibrating the ADE7758 for 3phase in the linecycle accum mode , is it required that you apply the three phases with a 120 degrees angle shift between the phases ?? Or you can also apply the same voltage to the three phases ??
2) When calibrating the VAR gain , the datasheet says that you need a PF of 0 . Is this really required ?? I can go till a PF 0.2 with the equipment i have . When I see the VAR gain formula , I think is should not be a problem as long as you have enough reactive energy .
3) When calibrating the IRMS offset , you need a the IMIN which is fullscale /500 and the test current Itest. Are there guidelines for the test current value ?? For example when fullscale is 400A imin is then 0.8 A but can I also use a test current of 10A or it should be higher compared to the example in the data sheet ??