Voltech AT360, Руководство пользователя

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S
PECIFICATIONS
V
OLTECH
AT
I
U
SER
M
ANUAL
P
AGE
8-21
8.2.14 Z
AND
ZB T
EST
The accuracy is given as:
Where
A
T
is the total accuracy (%)
A
R
is the basic relative accuracy (%)
A
C
is the calibration accuracy (%)
A
V
is the correction for voltage level (%)
A
I
is the correction for current level (%)
The value of
A
R
is given in the table in section 8.1 of this chapter.
The values of the other factors are given below.
Where
F
M
is the measurement frequency (Hz)
V
M
is the measured voltage (V)
I
M
is the measured current (A)
I
B
is the bias current (A).
A =
C
0.08% + (0.0000001%
x
F
M
)
A =
V
0.08% + (0.000003% / V
M
)
A =
I
0.08% + (0.0000003% / I
M
)
A = A
T R C V I
+A +A +A
+ (0.03% x I
B
/ I
M
)