Voltech AT3600 - Page 366

SPECIFICATION VOLTECH AT3600 USER MANUAL
PAGE 8.1.8. VPN 98 - 024 SPECIFICATION
MAGI TEST
The accuracy for the test voltage is given by:
The accuracy for measuring magnetizing current is given as:
where
A
T
is the total accuracy (%)
A
R
is the basic relative accuracy (%)
A
C
is the calibration accuracy (%)
A
I
is the correction for current level (%)
The value of A
R
is given in the table in section 1.1 of this chapter.
The values of the other factors are given below.
where
F
M
is the measurement frequency (Hz)
I
M
is the measured current (A)
A =
C
0.03% + (0.001% x
F
M
)
A =
I
0.03% + (0.0001% / II
M
M
) + (2% ) x
A(V ) = 1%
TEST
A = A
T
R
CI
+A +A