Disk Electrode With Guard Ring; Iec Standards; Astm Standards - Omicron Lab SPECTANO 100 User Manual

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13.3

Disk electrode with Guard ring

13.3.1

According to the latest IEC standards for the analysis of dielectric and resistive properties of solid and

liquid insulating materials

•

IEC 62632-2-1-2018-02: AC methods for solid insulating material analysis

•

IEC 60247-2004: AC methods for liquid insulating material analysis

•

IEC 62631-3-1-2017-03: DC methods for solid insulating material analysis

Disk electrodes with Guard ring should be used for DC methods or AC methods for frequencies < 10

MHz.

In comparison to IEC 60250, the latest IEC standards for AC methods base on the demands on different

frequency ranges.

For AC methods with frequencies > 10 MHz, the recommendation is to use Disk electrodes without

Guard ring to ensure a measurement accuracy as defined in the international standard documents.

IEC 60250-1969 (AC methods) is replaced by the more general IEC 62632-2-1-2018. This standard is

defined for frequencies up to 300 MHz. It describes, next to the requirements of Disk electrodes with

Guard ring, the ranges and applications of other test cell geometries such as Disk electrodes without

Guard ring or Cylindrical electrodes.

13.3.2

The latest ASTM standards for the analysis of dielectric and resistive properties of solid and liquid

insulating materials using Disk electrodes with Guard ring are:

D150-18: AC methods for solid insulating material analysis, (replacement of ASTM D150-11)

•

D924-15: AC methods for liquid insulating material analysis

•

D257-14: DC methods for solid insulating material analysis

•

Technical data

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