User Manual
MCR METER Manual
11
Accuracy of D
The accuracy of De about D is expressed by the following formula:
D
e
=
100
eA
When D
x
≤0.1, D
e
= D
e
When D
x
>0.1 ，D
e
= D
e
*(1+D
x
)
Accuracy of Q
The accuracy of Qe about Q is expressed by the following formula：
Q
e
=
ex
ex
DQ
DQ
1
Here, Qx is the test value of Q.
De is the accuracy of D
It is effective,when Q
x
×D
e
<1
Accuracy ofθ
The accuracy of θ is expressed by the following formula：
θe =
100
180
eA
[deg]
Accuracy of R
P
When D
x
≤0.1, the accuracy of R
p
is expressed by the following formula：
R
p
=
ex
epx
DD
DR
[]
Here, R
px
is the test value of R
p
. []
D
x
is the test value of D.
D
e
is the accuracy of D
Accuracy of R
S
When D
x
≤0.1, the accuracy of R
s
is expressed by the following formula：
R
se
= X
x
×D
e
[]
X
x
= 2πfL
x
=
xfC
2
1
Here，X
x
is the test value of X. [S]
C
x
is the test value of C. [F]
L
x
is the test value of L. [H]
D
e
is the accuracy of D，f is the test frequence.
Accuracy factor