Voltech AT3600 - Page 377

VOLTECH AT3600 USER MANUAL SPECIFICATION
SPECIFICATION VPN 98 - 024 PAGE 8.1.19.
SURG TEST
The accuracy of the Volts-seconds ‘area’ under the curve of the decaying transient
curve is based on the chosen test conditions, and is given as:
where
A
R
is the basic relative accuracy (%)
A
T
is the total accuracy (%)
A
C
is the calibration accuracy (%)
A
V
is the correction for voltage level (%)
The values of the factors are given below.
where
V
P
is the peak voltage of the transient (V)
L2, C2 AND R2 TESTS
The accuracy is dependant on the accuracy of the two inductance or capacitance
measurements made, and is given as:
where
A
T
is the total accuracy (%)
A
X
is the accuracy of the X measurement (%)
A
Y
is the accuracy of the Y measurement (%)
Refer to the accuracy specifications for the LS, C and R tests to determine the
accuracy of the X and Y measurements.
A =
C
3%
A = 2
V
% + (250% / x VV
P
P
) + (0.001% )
A = A
T
R
CV
+A +A
A = A
TX Y
+A