VOLTECH AT3600 USER MANUAL SPECIFICATION
SPECIFICATION VPN 98 - 024 PAGE 8.1.29.
ACRT TEST
The accuracy for the test voltage is given by:
RNGICVRT
AAAAAA
+=
where
A
T
is the total accuracy (%)
A
C
is the calibration accuracy (%)
A
I
is the correction for current level (%)
%/10%3
MV
VA +=
%03.0
=
C
A
MI
IA %003.0=
%
MRNG
VRangeA =
where
I
M
is the maximum test current (A (rms.))
V
M
is the actual voltage (V(rms.))
Range is the voltage range used for the measurement that will be the lowest
possible of the following ranges:
333V
1000V
3000V
10000V
The value of A
R
is given in the table in section 1.1. of this chapter.
SPECIAL NOTES:
Under certain test conditions the measured current will be higher than the allowed minimum limit
due to parasitic effects on the AT3600 and any connected fixture system. The maximum parasitic
effect created by the AT3600 with every node being used on an ACRT test can be calculated by:
I
p
= V*(4.614*10
-10
+ 9.1*10
-11
*f) where V = Test voltage and f = test frequency.
This works out to be 12.5uA at 2.5KV@50Hz.
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