R - X accuracy (depends on D)
Accuracy
D ≤ 0.2
Xm x Xa /100[Ω]
Xa[%]
0.2 < D ≤ 5
Ra/cosθ[%]
Xa/sinθ[%]
5 < D
Ra[%]
Rm x Ra/100[Ω]
Ra
Xa
Where,
D can be calculated as: R/X, or
R/(2πf x Ls), or
R x 2πf x Cs
θ can be calculated as: tan-1 (X/R), or
tan-1 (2πf x Ls/R), or
tan-1 (1/(R x 2πf x Cs))
Ra = A + (B/IRmI + C x IRmI) x 100 [%]
Xa = A + (B/IXmI + C x IXmI) x 100 [%]
R
m and Xm are the measured R and X, respectively. A, B, and C are obtained
from Figure 1-7.
G - B accuracy (depends on D)
Accuracy
D ≤ 0.2
Bm x Ba /100[S]
Ba[%]
0.2 < D ≤ 5
Ga/cosθ[%]
Ba/sinθ[%]
5 < D
Ga[%]
Gm x Ga /100[S]
Ga
Ba
Where,
D can be calculated as: G/B, or
G/(2πf x Cp), or
G X 2πf x Lp
θ can be calculated as: tan-1 (B/G), or
tan-1 (2πf x Cp/G), or
tan-1 (1/(G x 2πf x Lp))
Ga = A + (B/IGmI + C x IGmI) x 100[%]
Ba = A + (B/IBmI + C x IBmI) x 100[%]
m and Bm are the measured G and B, respectively. A, B, and C are obtained from
Figure 1-7.
G
D accuracy
Accuracy
D ≤ 0.2
Za/100
0.2 < D
Da
(Za/100) x (1 + D2)
Where, Za is IZI accuracy.
L accuracy (depends on D)
Accuracy
D ≤ 0.2
La
0.2 < D
La (1 + D)
La
Where, La = A + (B/IZlI + C x IZl) x 100[%]
IZlI = 2πf x Lm, f is frequency in Hz, and Lm is measured L. A, B, and C are obtained
from Figure 1-7.
C accuracy (depends on D)
Accuracy
D ≤ 0.2
Ca
0.2 < D
Ca (1 + D)
Ca
Where, Ca = A + (B/IZcI + C x IZcI) x 100[%]
IZcI = (2 π f x Cm)-1 f is frequency in Hz, and Cm is measured C. A, B, and C are
obtained from Figure 1-7.
14
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