APPENDIX
137
Accuracy Definition
|Z|, |Y|
High Impedance
[1]
Ae[%]=±((A+0.0000001*Zx)*Kv*Kt)
Low Impedance
[2]
Ae[%]=±((A+0.1/Zx)*Kv*Kt)
L, C, X, B
High Impedance when D < 0.1
Ae[%] = ± (( A + 0.0000001*Zx ) * Kv * Kt)
High Impedance when D
≥
0.1
Ae[%] = ± (((A + 0.0000001*Zx ) * Kv*Kt)*
2
1
D
)
Low Impedance when D < 0.1
Ae[%] = ± (( A + 0.1/Zx ) * Kv * Kt)
Low Impedance when D
≥
0.1
Ae[%] = ± ((( A + 0.1/Zx ) * Kv * Kt) *
2
1
D
)
R, G
High Impedance when Qx < 0.1
Ae[%] = ± (( A + 0.0000001*Zx ) * Kv * Kt)
High Impedance when Qx
≥
0.1
Ae[%] = ± (((A + 0.0000001*Zx ) * Kv*Kt)*
2
1
Q
)
Low Impedance when Qx < 0.1
Ae[%] = ± (( A + 0.1/Zx ) * Kv * Kt)
Low Impedance when Qx
≥
0.1
Ae[%] = ± ((( A + 0.1/Zx ) * Kv * Kt) *
2
1
Q
)
D
± ( Ae/100) when D
≤
0.1
± ( (Ae/100) * (1+D
2
)) when D > 0.1
Rdc
The Rdc accuracy is equal to Z's accuracy at the 20Hz
measurement frequency.
Q
± (((Qx
2
*De) / (1±Qx*De)) when (Qx*De)< 1
Ɵ
± ((180*|Z|Ae[%]) / (
π
/100))
Convention
A
Accuracy taken from the Accuracy chart
Zx
Measured value of unknown component
Kv
Test Voltage factor
Level
Kv
Level
Kv
≥
1.250
1.2
≥
0.078
2
≥
0.625
1
≥
0.039
2.5
≥
0.313
1.2
≥
0.02
5
≥
0.156
1.5
≥
0.010
10
Kt
Temperature factor
Temperature Kt
Temperature Kt
8-18°C
2
28-35°C
2
18-28°C
1
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