GB/T 31838.4-2019 Solid insulating materials - Dielectric and resistive properties - Part 4: Resistive properties (DC methods) - Insulation resistance
1 Scope
This part of GB/T 31838 covers methods of test for the determination of the insulation resistance of solid electrical insulating materials by applying DC voltage
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60212 Standard conditions for use prior to and during the testing of solid electrical insulating materials
For the purposes of this document, the following terms and definitions apply.
3.1
electrode arrangement
arrangement of two electrically conductive bodies in contact with the surface of a test specimen
3.2
tapered pin electrodes
electrode arrangement using tapered pin electrodes
Note: See Figure 1 for the schematic diagram of the tapered pin electrodes.
Dimensions in millimetres
a) Test specimen arrangement for plates
b) Test specimen arrangement for pipes and rods
Figure 1 Tapered pin electrode arrangements
3.3
bar electrodes
electrode arrangement using bar electrodes
Note: See Figure 2 for the schematic diagram of the bar electrodes.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Significance 5 Method of test 6 Test report 7 Repeatability and reproducibility Bibliography
GB/T 31838.4-2019 Solid insulating materials - Dielectric and resistive properties - Part 4: Resistive properties (DC methods) - Insulation resistance
1 Scope
This part of GB/T 31838 covers methods of test for the determination of the insulation resistance of solid electrical insulating materials by applying DC voltage
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60212 Standard conditions for use prior to and during the testing of solid electrical insulating materials
IEC 60216-4-1 Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens
ISO 2339 Taper pins unhardened
ISO 3465 Hand taper pin reamers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
electrode arrangement
arrangement of two electrically conductive bodies in contact with the surface of a test specimen
3.2
tapered pin electrodes
electrode arrangement using tapered pin electrodes
Note: See Figure 1 for the schematic diagram of the tapered pin electrodes.
Dimensions in millimetres
a) Test specimen arrangement for plates
b) Test specimen arrangement for pipes and rods
Figure 1 Tapered pin electrode arrangements
3.3
bar electrodes
electrode arrangement using bar electrodes
Note: See Figure 2 for the schematic diagram of the bar electrodes.
Contents of GB/T 31838.4-2019
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Significance
5 Method of test
6 Test report
7 Repeatability and reproducibility
Bibliography
