GB/T 31838.3-2019Solid insulating materials -- Dielectric and resistive properties -- Part 3: Resistive properties (DC methods) -- Surface resistance and surface resistivity (English PDF)
固体绝缘材料 介电和电阻特性 第3部分：电阻特性（DC方法）表面电阻和表面电阻率
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
June 4, 2019
Implementation date
January 1, 2020
Scope
GB/T 31838.3-2019 is the English-translated version of 固体绝缘材料 介电和电阻特性 第3部分：电阻特性（DC方法）表面电阻和表面电阻率.
GB/T 31838.3-2019 is the Chinese standard "Solid insulating materials -- Dielectric and resistive properties -- Part 3: Resistive properties (DC methods) -- Surface resistance and surface resistivity".
Its scope clause reads: This part of GB/T 31838 specifies the test method for determining the surface resistance and surface resistivity of solid insulating materials under DC voltage. Its clauses include terms and definitions.
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Document preview — GB/T 31838.3-2019
National Standard of the People's Republic of China
- ICS
- 29.035.01
- Classification
- K 15
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 meaning
- 5 Test method
- 6 reviews
- 7 Test report
- 8 Repeatability and reproducibility
- Appendix A (informative) Specimen size and electrode assembly
1 Scope
This part of GB/T 31838 specifies the test method for determining the surface resistance and surface resistivity of solid insulating materials under DC voltage.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Standard conditions for the pre-test and test of IEC 60212 solid electrical insulating materials (Standardconditionsforuseprior
Toandduringthetestingofsolidelectricalinsulatingmaterials)
IEC 62631-3-1 Dielectric and resistive properties of solid insulating materials - Part 3-1. Determination of resistance characteristics (DC method)
And volume resistivity general method [Dielectricandresiveivepropertiesofsolidinsulatingmaterials-Part 3-1.
Determinationofresistiveproperties(DCMethods)-Volumeresistanceandvolumeresistivity-Gen-
Eralmethod]
IEC 62631-3-3 Dielectric and resistive properties of solid insulating materials - Part 3-3. Determination of resistance characteristics (DC method) Insulation resistance
[Dielectricandresistivepropertiesofsolidinsulatingmaterials-Part 3-3.Determinationofresistive
Properties(DCMethods)-Insulationresistance]
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Electrode device
A conductor device that is in contact with the surface of the sample being measured.
Note. The placement of the electrodes should ensure adequate contact with the surface of the material (for example, by conductive coating) and/or application of mechanical forces to the electrodes and materials.
The location where the material surface is in contact.
3.2 Spring electrode
Wire electrode systems, usually with a spring structure with a sharp corner, two parallel metal blade electrodes with a certain gap.
3.3 Wire electrode
A parallel line electrode with a certain gap applied to the surface of the material to be tested.
3.4 Ring electrode
The center is a circular electrode with a space around the ring electrode.
Note. Similar to the shape of the guard electrode defined in IEC 62631-3-1, when measuring the surface resistance, the ring electrode is no longer used as a protective electrode, and the protection function is […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.
Referenced standards
Normative references
IEC 60212 · IEC 62631
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Related Standards
GB/T 31838.4-2019 — Solid insulating materials -- Dielectric and resistive properties -- Part 4: Resistive properties (DC methods) -- Insulation resistance
GB/T 31838.2-2019 — Solid insulating materials -- Dielectric and resistive properties -- Part 2: Resistive properties (DC methods) -- Volume resistance and volume resistivity
GB/T 31838.5-2021 — Solid insulating materials - Dielectric and resistive properties - Part 5: Resistive properties(DC method) - Volume resistance and volume resistivity of impregnation and coating materials
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