Ir Test - Voltech ATi User Manual

S
PECIFICATIONS
8.2.9 IR T
The accuracy is based on the test conditions chosen to measure the insulation
resistance, and is given as:
Where
The value of A
The values of the other factors are given below.
Where
P 8-16
AGE
EST
A = A +A +A +A
T R C
is the total accuracy (%)
A
T
is the basic relative accuracy (%)
A
R
is the calibration accuracy (%)
A
C
is the correction for current level (%)
A
I
is the correction for impedance level (%)
A
Z
is given in the table in section 8.1 of this chapter.
R
A = 0.03%
C
A = 3.2% + ( 0.000002% /
I
A = 0.5% + (0.001%
Z
is the measured current (A)
I
M
is the measured IR value (MΩ)
Z
M
I Z
I )
M
x
Z )
M
V
OLTECH
AT U M
I SER ANUAL