ASTM D6095-05

Standard Test Method for Volume Resistivity for Extruded Crosslinked and Thermoplastic Semiconducting Conductor and Insulation Shielding Materials

SCOPE
1.1 This test method covers the procedure for determining the volume resistivity, measured longitudinally, of extruded crosslinked and thermoplastic semiconducting, conductor and insulation shields for wire and cable.
1.2 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see .
1.3 In common practice the conductor shield is often referred to as the strand shield.
1.4 While technically the volume resistivity in this test method is a longitudinal measurement of volume resistivity, in the wire and cable industry the word longitudinal is not used. This longitudinal measurement of volume resistivity will be referred to as "volume resistivity" throughout this standard.

General Information

• Status: Historical
• Publication Date: 28-Feb-2005
• ICS: 29.045 - Semiconducting materials
• ICS: 29.060.01 - Electrical wires and cables in general
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaces: ASTM D6095-99 - Standard Test Method for Volume Resistivity for Extruded Crosslinked and Thermoplastic Semiconducting Conductor and Insulation Shielding Materials
• Effective Date: 01-Mar-2005
• Replaced By: ASTM D6095-06 - Standard Test Method for Longitudinal Measurement of Volume Resistivity for Extruded Crosslinked and Thermoplastic Semiconducting Conductor and Insulation Shielding Materials
• Effective Date: 01-Apr-2006
• Referred By: ASTM D3004-08(2020) - Standard Specification for Crosslinked and Thermoplastic Extruded Semi-Conducting, Conductor, and Insulation Shielding Materials
• Effective Date: 01-Mar-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D6095–05
Standard Test Method for
Longitudinal Measurement of Volume Resistivity for
Extruded Crosslinked and Thermoplastic Semiconducting
1
Conductor and Insulation Shielding Materials
This standard is issued under the fixed designation D 6095; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 semiconducting,, adj—moderately conductive, see
Terminology D 1711 and Test Method D 4496.
1.1 This test method covers the procedure for determining
3.1.2 longitudinal volume resistivity,, n— the measurement
the volume resistivity, measured longitudinally, of extruded
of a resistance between two electrodes attached to one and only
crosslinked and thermoplastic semiconducting, conductor and
one surface of the specimen resulting in a current path parallel
insulation shields for wire and cable.
to the axis of the cable and perpendicular to the plane of the
1.2 Whenever two sets of values are presented, in different
electrodes.
units, the values in the first set are the standard, while those in
3.1.2.1 Discussion—In normal wire and cable usage, the
parentheses are for information only.
longitudinal measurement of volume resistivity is simply
1.3 This standard does not purport to address all of the
referred to as “volume resistivity.”
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety and health practices and determine the applica-
4.1 The electrical behavior of semiconducting extruded
bility of regulatory limitations prior to use. For a specific
shielding materials is important for a variety of reasons, such
hazard statement, see 7.1.
as safety, static charges, and current transmission. This test
1.4 In common practice the conductor shield is often re-
method is useful in predicting the behavior of such semicon-
ferred to as the strand shield.
ducting compounds. Also see Test Method D 4496.
1.5 While technically the volume resistivity in this test
method is a longitudinal measurement of volume resistivity, in
5. Apparatus
the wire and cable industry the word longitudinal is not used.
5.1 See Test Method D 4496 for a description of the
This longitudinal measurement of volume resistivity will be
apparatus, except the electrode system which is described in
referred to as “volume resistivity” throughout this standard.
7.2.
2. Referenced Documents
6. Sampling and Test Specimens
2
2.1 ASTM Standards:
6.1 Take one 2-ft (600-mm) sample from each lot, or from
D 1711 Terminology Relating to Electrical Insulation
each 25000 ft (7600 m) of completed cable, whichever is less.
D 4496 Test Method of DC-Resistance or Conductance of
6.2 The specimen consists of a 10 in. (250 mm) length of
Moderately Conductive Materials
cable core with all layers external to the semi-conducting
3. Terminology insulation shield removed. Use this specimen to test the
insulation shield. To test the conductor shield, bisect the
3.1 Definitions of Terms Specific to This Standard:
sample longitudinally and remove the conductor. Use only one
piece of the conductor shield as the test specimen.
1
This test method is under the jurisdiction of ASTM Committee D09 on 6.3 Condition the specimens in accordance with Test
Electrical and Electronic Insulating Materials and is the direct responsibility of
Method D 4496.
Subcommittee D09.18 on Solid Insulations, Nonmetallic Shieldings and Coverings
6.3.1 If the shielding materials are crosslinked, condition
for Electrical and Telecommunication Wires and Cables.
the cable core (jacket removed) overnight at 50 °C to eliminate
Current edition approved March 1, 2005. Published April 2005. Originally
approved in 1997. Last previous edition approved in 1999 as D 6095–99.
any acetophenone that may be present. Then proceed with the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
conditioning in accordance with Test Method D 4496.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D6095–05
Conductor Shielding:
7. Procedure
2 2
7.1 Warning—Thoroughly instruct all operators as to the r5 [R ~D – d ! ] /L (2)
a a
correct procedures for performing tests safely.
where:
7.2 Apply an electrode system consisting of four annular
r = volume resistivity, V-cm,
...