ASTM D1351-02

Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable

SCOPE
1.1 This specification covers a thermoplastic insulation which consists substantially of polyethylene.
1.2 This type of insulation is considered suitable for continuous operation for conductor temperatures up to 75oC with a maximum conductor size of 1000 kcmil (507 mm2). The maximum voltage rating shall not exceed 35 000 V for power application or 9 000 V for series lighting.
1.3 In many instances the insulation material cannot be tested unless it has been formed around a conductor or cable. Therefore, tests done on insulated wire or cable in this document are solely to determine the relevant property of the insulation material and not to test the insulated conductor or completed cable.
1.4 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

• Replaces: ASTM D1351-97 - Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable
• Effective Date: 10-Mar-2002
• Replaced By: ASTM D1351-08 - Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable
• Effective Date: 01-Jan-2008

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 1351 – 02
Standard Specification for
Thermoplastic Polyethylene Insulation for Electrical Wire
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and Cable
This standard is issued under the fixed designation D 1351; 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.
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1. Scope T-24-380 Guide for Partial-Discharge Procedure
1.1 This specification covers a thermoplastic insulation
3. Terminology
which consists substantially of polyethylene.
3.1 Definitions:
1.2 This type of insulation is considered suitable for con-
3.1.1 Refer to Terminology D 1711 for definitions pertinent
tinuous operation for conductor temperatures up to 75°C with
2
to this specification.
a maximum conductor size of 1000 kcmil (507 mm ). The
3.2 Definition of Term Specific to This Standard:
maximum voltage rating shall not exceed 35 000 V for power
3.2.1 aging, n—exposure of materials to air at 100°C for 48
application or 9 000 V for series lighting.
h.
1.3 In many instances the insulation material cannot be
tested unless it has been formed around a conductor or cable.
4. Conductor Shields
Therefore, tests done on insulated wire or cable in this
4.1 Use conductor shields on solid and stranded conductors
document are solely to determine the relevant property of the
of power cables having rated circuit voltages above 2000 V.
insulation material and not to test the insulated conductor or
This requirement does not apply to series lighting cables.
completed cable.
Conductor shielding is conducting material at least 0.0025 in.
1.4 Whenever two sets of values are presented, in different
(0.06 mm) thick applied over the surface of the conductor. It
units, the values in the first set are the standard, while those in
may be conducting nonmetallic tape, conducting compound, or
parentheses are for information only.
conducting cement.
2. Referenced Documents
5. Physical Properties
2.1 ASTM Standards:
5.1 The polyethylene, before application to the conductor,
D 1248 Specification for Polyethylene Plastics Extrusion
shall comply with the requirements of Specification D 1248 for
2
Materials for Wire and Cable
3 Type I; ClassA, B or C; Category 4 or 5; Grade E4 or E5. The
D 1711 Terminology Relating to Electrical Insulation
requirements of Specification D 1248 do not apply to the
D 2308 Specification for Thermoplastic Polyethylene
3 insulation removed from the conductor.
Jacket for Electrical Wire and Cable
5.2 Insulation exposed to sunlight or weather requires
D 2633 Methods of Testing Thermoplastic Insulations and
4 Specification D 1248, Class C compound or suitable protective
Jackets for Wire and Cable
coverings. Class C compound shall meet the minimum absorp-
D 3349 Test Method forAbsorption Coefficient of Ethylene
4 tion coefficient requirement in Table 1.
Polymer Material Pigmented with Carbon Black
5.3 Specimens removed from the wire or cable and tested at
2.2 ICEA Standard:
20 to 30°C (68 to 80°F) shall conform to the requirements for
physical properties specified in Table 1. The insulation may be
1
air-oven aged without removal from the conductor.
This specification is under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and is the direct responsibility of
5.4 Thickness of Insulation—The minimum average insula-
Subcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings and Coverings
tion thickness shall be as specified in Table 2 or Table 3 of this
for Electrical and Telecommunication Wires and Cables.
specification. The minimum thickness shall be at least 90 % of
Current edition approved March 10, 2002. Published June 2002. Originally
published as D 1351 – 54T. Last previous edition D 1351-97. the specified minimum average thickness.
2
Annual Book of ASTM Standards, Vol 08.01.
3
Annual Book of ASTM Standards, Vol 10.01.
4 5
Annual Book of ASTM Standards, Vol 10.02. Available from the Insulated Cable EngineersAssociation, P.O. Box 440, South
Yarmouth, MA 02664.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1351–02
TABLE 1 Physical Properties of Compound
6.4 Insulation Resistance—The insulated conductor shall
have an insulation-resistance value equal to or greater than that
corresponding to a constant of 50 000 MV-1000 ft at 60°F
Unaged Requirements:
Tensile strength, min, psi (MPa) 1400 (9.7)
(15.6°C). When the temperature of the water in which the
Elongation at rupture, min, % 350
insulation is tested differs from 60°F, a correction factor must
Aged Requirements:
After air oven aging
...