As the linear relationship between rectangular fluctuations(ΔV/V)and short flicker Pstwhich is the output of IEC flickermeter is satisfied with the function KPst =f(KΔV/V),IEC 61000-4-15 standard requires that the flickermeter manufacturer should specify the lowest and highest K-value for which the corresponding Pstvalue is within the error limitation,and even requires that the highest K-value of class A for flickermeter must be 10.Research results show that the highest Kvalue of strictly designed flickerme...