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ADE7878A Reactive Power Signal

Category: Hardware
Product Number: ADE7878A

I'm reading values from ADE7878A on phase A and I'm getting opposite VAR signal value. On a test grid, when I turn the air conditioner on, which is an inductive load, the reactive power becomes negative, indicating a capacitive load. What could be wrong?

Below, there is a plot of the power readings. When it increases is due to the compressor activation (inductive load). When it happens, the VAR becomes negative.