ASTM D2308-97

Standard Specification for Thermoplastic Polyethylene Jacket for Electrical Wire and Cable

SCOPE
1.1 This specification covers a thermoplastic jacketing compound for 2 to 35 kV wire and cable, of at least 0.030 in. (0.76 mm) nominal thickness, consisting substantially of pigmented polyethylene.
1.2 In many instances the jacket material cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on jacketed wire and cable in this document solely to determine the relevant property of the jacket material and not to test the jacketed conductor or completed cable.
1.3 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.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaced By: ASTM D2308-02 - Standard Specification for Thermoplastic Polyethylene Jacket for Electrical Wire and Cable
• Effective Date: 10-Mar-2002
• Referred By: ASTM D1351-20 - Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable
• Effective Date: 10-Mar-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2308 – 97
Standard Specification for
Thermoplastic Polyethylene Jacket for Electrical Wire and
Cable
This standard is issued under the fixed designation D 2308; 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 shall comply with the requirements for Type I, Class C,
Category 4 or 5, Grade E5 or J3 of Specification D 1248, or
1.1 This specification covers a thermoplastic jacketing com-
Class B with equivalent weathering requirements to Class C
pound for 2 to 35 kV wire and cable, of at least 0.030 in. (0.76
materials. The requirements of Specification D 1248 shall not
mm) nominal thickness, consisting substantially of pigmented
apply to the jacket removed from the wire or cable. The
polyethylene.
compound is suitable for exposure to sunlight and other
1.2 In many instances the jacket cannot be tested unless it
atmospheric environments at temperatures between −55
has been formed around a conductor or cable. Therefore, tests
and +75°C, and a minimum installation temperature of −40°C.
are done on jacketed wire and cable in this document solely to
4.2 Specimens removed from the wire or cable and tested at
determine the relevant property of the jacket and not to test the
20 to 28°C (68 to 82°F) shall conform to the requirements for
jacketed conductor or completed cable.
physical properties specified in Table 1. The jacket may be
1.3 The values stated in inch-pound units are the standard,
air-oven aged without removal from the conductor.
except in cases where SI units are more appropriate. The values
4.3 Environmental Stress-Cracking Test— The jacket shall
in parentheses are for information only.
conform to the requirements for Grade E5 as specified in Table
2. Referenced Documents
3 of Specification D 1248.
4.4 Absorption Coeffıcient—See Test Method D 3349. In-
2.1 ASTM Standards:
stead of testing the jacket removed from the conductors, a
D 1248 Specification for Polyethylene Plastics Molding and
certification by the polyethylene compound manufacturer that
Extrusion Materials
this requirement has been complied with shall suffice.
D 1693 Test Method for Environmental Stress-Cracking of
Ethylene Plastics
5. Electrical Properties
D 1711 Terminology Relating to Electrical Insulation
5.1 The polyethylene jacket shall conform to the require-
D 2633 Methods of Testing Thermoplastic Insulations and
ments for electrical properties specified in Table 2.
Jackets for Wire and Cable
D 3349 Test Method for Absorption Coefficient of Ethylene
6. Sampling
Polymer Material Pigmented with Carbon Black
6.1 Unless otherwise instructed, sample the jacket in accor-
3. Terminology dance with Test Methods D 2633.
3.1 Definitions:
7. Test Methods
3.1.1 Refer to Terminology D 1711 for definitions pertinent
7.1 Unless otherwise instructed, test the jacket in accor-
to this specification.
dance with Test Methods D 2633.
3.2 Definition of Term Specific to This Standard:
7.2 Environmental Stress-Cracking Test— Test in accor-
3.2.1 aging, n—exposure of materials to air at 100°C for
dance with Test Method D 1693, Condition A, using undiluted
either 24 or 48 h.
Igepal CO 630 as specified in Specification D 1248.
4. Physical Properties 7.3 Absorption Coeffıcient—Test in accordance with Test
Method D 3349.
4.1 The polyethylene before application to the wire or c
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