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Technical data
13.7.2 ASTM standards
The latest ASTM standards for the analysis of dielectric and resistive properties of solid and liquid
insulating materials using Cylindrical electrodes without Guard ring are:
•
D150-18: AC methods for solid insulating material analysis (replaces ASTM D150-11)
•
D924-15: AC methods for liquid insulating material analysis
•
D257-14: DC methods for solid insulating material analysis
13.7.3 Test cell type selection in SPECTANO Analyzer Suite
Table
7
13-10
10
SPECTANO Analyzer Suite test cell selection according to different standards
Standards
Vacuum capacitance c
0
SPECTANO Analyzer Suite selection
AC method for solids:
IEC 60250-1969
ASTM D150-18
ASTM D150-11
AC method for liquids:
IEC 60247-2004
ASTM D924-15
𝑐𝑐
0
=
𝜀𝜀
0
∙
2
𝜋𝜋 ∙ 𝑙𝑙
ln
�𝑑𝑑
2
𝑑𝑑
1
�
Cylindrical electrode with Guard ring
DC method for solids:
62631-3-1-2017
ASTM D257-14
%
Cylindrical electrode with Guard ring
Note: The automated calculation of the specific
resistance and conductivity is actually only
implemented in the
SPECTANO Analyzer
Suite
for Disk electrodes. All other DC
parameters as the polarization current,
depolarization current, electrical resistance or
electrical conductivity are also available for
Cylindrical electrodes. The automated
calculation of the specific resistance and
conductivity for Cylindrical electrodes will be
implemented in the future. For the calculation
of the specific resistance and conductivity
using Cylindrical electrodes please perform a
.csv export.
c
0
Vacuum capacitance
ε
0
Vacuum permittivity
8.8541878176 x 10
-12
F/m
l Electrode length
d
2
Outer diameter of sample
d
1
Inner diameter of sample