The reactive power meter only collects how the current and voltage are represented by vectors.

All accuracy calculations are the same: accuracy = (measured value/actual value) * 100%.

For example, if the actual current is 5a and measured with a precision ammeter is 4.999a, the accuracy is:

(4.999/5)* 100%=99.98%

If the calculation error is: (│ actual value-measured value │/actual value) * 100%

=(│5-4.999│/5)* 100%=0.02%

Error plus precision equals the actual value.

. Multiply the quotient of division by 100% as a percentage.