[stpm34] I get power factor greater than 1 in my power factor calc

In our system using stpm34, stpm34's registers are read every 5 seconds.

Of course, during those five seconds the load can change.

To calculate the power factor using the stpm34 register values I read, I calculate the "Active Power (ph1_reg5)" / "Apparent RMS Power (ph1_reg8)".

However, depending on the state of the load, power factor greater than 1 may appear.

What is the problem?

Also, is there a way to find the average value of each of Vrms and Irms for 5 seconds?

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