Standard Specification for Crosslinked and Thermoplastic Extruded Semi-Conducting, Conductor, and Insulation Shielding Materials

ABSTRACT
This specification covers extruded cross linked and thermoplastic semi-conducting, conductor and insulation shielding materials for electrical wires and cables. The materials covered are not compatible with hydro carbon derivatives of a swelling or deteriorating nature. Different tests shall be performed in order to determine physical properties like brittleness, aging requirements, and elongation at rupture and volume resistivity.
SCOPE
1.1 This specification covers crosslinked and thermoplastic extruded semi-conducting, conductor, and insulation shielding materials for electrical wires and cables.  
1.2 In many instances, the electrical properties of the shielding material are strongly dependent on processing conditions. For this reason, in this specification the material is sampled from cable. Therefore, tests are done on shielded wire in this standard solely to determine the relevant property of the shielding material and not to test the conductor or completed cable.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Published
Publication Date
31-Jul-2020
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ASTM D3004-08(2020) - Standard Specification for Crosslinked and Thermoplastic Extruded Semi-Conducting, Conductor, and Insulation Shielding Materials
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3004 −08 (Reapproved 2020)
Standard Specification for
Crosslinked and Thermoplastic Extruded Semi-Conducting,
Conductor, and Insulation Shielding Materials
This standard is issued under the fixed designation D3004; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4496 Test Method for D-C Resistance or Conductance of
Moderately Conductive Materials
1.1 This specification covers crosslinked and thermoplastic
D4703 Practice for Compression Molding Thermoplastic
extruded semi-conducting, conductor, and insulation shielding
Materials into Test Specimens, Plaques, or Sheets
materials for electrical wires and cables.
D6095 Test Method for Longitudinal Measurement of Vol-
1.2 In many instances, the electrical properties of the
ume Resistivity for Extruded Crosslinked and Thermo-
shielding material are strongly dependent on processing con-
plastic Semiconducting Conductor and Insulation Shield-
ditions. For this reason, in this specification the material is
ing Materials
sampled from cable. Therefore, tests are done on shielded wire
in this standard solely to determine the relevant property of the
3. Terminology
shielding material and not to test the conductor or completed
3.1 Definitions:
cable.
3.1.1 For definitions of terms used in this specification, refer
1.3 The values stated in SI units are to be regarded as
to Terminology D1711.
standard. No other units of measurement are included in this
3.2 Definitions of Terms Specific to This Standard:
standard.
3.2.1 aging (act of), n—the exposure of materials to an
environment for an interval of time.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.2.2 longitudinal volume resistivity, n—an electrical resis-
ization established in the Decision on Principles for the
tance multiplied by a factor calculated from the geometry of a
Development of International Standards, Guides and Recom-
specimen volume between electrodes in contact with one, and
mendations issued by the World Trade Organization Technical
only one, surface of the specimen.
Barriers to Trade (TBT) Committee.
3.2.2.1 Discussion—In normal wire and cable usage, the
longitudinalvolumeresistivityissimplyreferredtoas“volume
2. Referenced Documents
resistivity.” This usage is at variance with terminology in Test
2.1 ASTM Standards: Methods D257, D4496, and Terminology D1711.
D257 Test Methods for DC Resistance or Conductance of
3.2.3 semi-conducting, adj—moderately conductive; see
Insulating Materials
Terminology D1711 and Test Method D4496.
D1711 Terminology Relating to Electrical Insulation
D2647 Specification for Crosslinkable Ethylene Plastics
4. Physical Properties
D3182 PracticeforRubber—Materials,Equipment,andPro-
4.1 The shielding material, when processed into molded
cedures for Mixing Standard Compounds and Preparing
slabs, in accordance with Procedure C in the annex of Practice
Standard Vulcanized Sheets
D4703, the Sampling section of Specifica
...

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