ASTM D6095-99

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 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.
1.3 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 7.1.
1.4 In the common practice the conductor shield is often referred to as the strand shield.
1.5 While technically the volume resistivity in this test method is a longitudinal volume resistivity, in the wire and cable industry the word longitudinal is not used.

General Information

• Status: Historical
• Publication Date: 09-Mar-1999
• ICS: 29.045 - Semiconducting materials
• ICS: 29.060.01 - Electrical wires and cables in general
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaced By: ASTM D6095-05 - Standard Test Method for Volume Resistivity for Extruded Crosslinked and Thermoplastic Semiconducting Conductor and Insulation Shielding Materials
• Effective Date: 01-Mar-2005
• Referred By: ASTM D3004-08(2020) - Standard Specification for Crosslinked and Thermoplastic Extruded Semi-Conducting, Conductor, and Insulation Shielding Materials
• Effective Date: 10-Mar-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6095–99
Standard Test Method for
Volume Resistivity for Extruded Crosslinked and
Thermoplastic Semiconducting 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 3.1.2 longitudinal volume resistivity,, n— the measurement
of a resistance between two electrodes attached to one and only
1.1 This test method covers the procedure for determining
one surface of the specimen resulting in a current path parallel
the volume resistivity of extruded crosslinked and thermoplas-
to the axis of the cable and perpendicular to the plane of the
tic semiconducting, conductor and insulation shields for wire
electrodes.
and cable.
3.1.2.1 Discussion—In normal wire and cable usage, the
1.2 Whenever two sets of values are presented, in different
word longitudinal is not used.
units, the values in the first set are the standard, while those in
parentheses are for information only.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 The electrical behavior of semiconducting extruded
safety concerns, if any, associated with its use. It is the
shielding materials is important for a variety of reasons, such
responsibility of the user of this standard to establish appro-
as safety, static charges, and current transmission. This test
priate safety and health practices and determine the applica-
method is useful in predicting the behavior of such semicon-
bility of regulatory limitations prior to use. For a specific
ducting compounds. Also see Test Method D 4496.
hazard statement, see 7.1.
1.4 In common practice the conductor shield is often re-
5. Apparatus
ferred to as the strand shield.
5.1 See Test Method D 4496 for a description of the
1.5 While technically the volume resistivity in this test
apparatus, except the electrode system which is described in
method is a longitudinal volume resistivity, in the wire and
7.2.
cable industry the word longitudinal is not used.
6. Sampling and Test Specimens
2. Referenced Documents
6.1 Take one 2-ft (600-mm) sample from each lot, or from
2.1 ASTM Standards:
2 each 25000 ft (7600 m) of completed cable, whichever is less.
D 1711 Terminology Relating to Electrical Insulation
6.2 The specimen consists of a 10 in. (250 mm) length of
D 4496 Test Method of DC-Resistance or Conductance of
3 cable core with all layers external to the semi-conducting
Moderately Conductive Materials
insulation shield removed. Use this specimen to test the
3. Terminology insulation shield. To test the conductor shield, bisect the
sample longitudinally and remove the conductor. Use only one
3.1 Definitions of Terms Specific to This Standard:
piece of the conductor shield as the test specimen.
3.1.1 semiconducting,, adj—moderately conductive, see
6.3 Condition the specimens in accordance with Test
Terminology D 1711 and Test Method D 4496.
Method D 4496.
6.3.1 If the shielding materials are crosslinked, condition
the cable core (jacket removed) overnight at 50°C to eliminate
This test method is under the jurisdiction of ASTM Committee D-9 on
any acetophenone that may be present. Then proceed with the
Electrical and Electronic Insulating Materials and is the direct responsibility of
Subcommittee D09.18 on Solid Insulations, Nonmetallic Shieldings and Coverings conditioning in accordance with Test Method D 4496.
for Electrical and Telecommunication Wires and Cables.
Current edition approved March 10, 1999. Published April 1999. Originally
7. Procedure
published as D 6095–97. Last previous edition D 6095–97.
7.1 Warning—Insert the latest version of high-voltage
Annual Book of ASTM Standards, Vol 10.01.
Annual Book of ASTM Standards, Vol 10.02. caveat here.
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D6095–99
2 2
7.2 Apply an electrode system consisting of four annular
r5 [R ~D – d ! ] /L (2)
a a
bands of silver paint approximately 0.25 in. (6.5 mm) wide to
where:
the insulation shield. There must be a distance of at least 2 in.
r = volume resistivity, V-cm,
(50 mm) of shield between the potential electrodes (the two
R = measured resistance, V,
inner bands) and a distance of 1 in. of shield between the
L = distance between potential electrodes, in.,
current electrodes (the outer bands) and the potential elec-
D = diameter over conductor shielding, in.,
a
trodes. See Annex A1 of Test Method D 4496.
d = diameter over conductor, in.,
a
7.3 For measurement of the conductor shield, bisect the
D = diameter over insulation shielding, in., and
b
sample longitudinally and remove the conductor. Then, using
d = diameter over insulation, in.
b
only one piece of the bisected shield, apply the silver paint
NOTE 1—Eventhoughthedimensionsarem
...