188.8.131.52 HPAC Test
The accuracy for the test voltage is given by:
A(VTEST) = 3%
The accuracy for the peak current detection is given by:
AT = AR +AC+AI
AR is the basic relative accuracy (%)
AT is the total accuracy (%)
AC is the calibration accuracy (%)
AI is the correction for current level (%)
AC = 0.03%
AI = 0.003% / IM
IM is the measured current (A)
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 HPAC test can be calculated by:
Ip = 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.