ASTM D1351-14

Standard Specification for Thermoplastic Polyethylene Insulation for Electrical Wire and Cable

ABSTRACT
This specification covers thermoplastic polymer insulation consisting substantially of polyethylene considered suitable for use on electrical wire or cable with specified maximum conductor sizes that will be used for continuous operation at specified conductor temperatures and maximum voltage ratings for power application or series lighting. Since the insulation material cannot be tested unless it has been formed around a conductor, tests shall then be done on insulated wire or cable in this specification are solely to determine the relevant property of the insulation material and not to test the insulated conductor or completed cable. Materials shall conform to physical properties as to unaged tensile strength and elongation at rupture, tensile strength and elongation at rupture after air oven aging, absorption coefficient, and insulation thickness. Insulations shall also be tested for their electrical performance in terms of AC and DC voltage, partial discharge, and insulation resistance.
SCOPE
1.1 This specification covers a thermoplastic insulation which consists substantially of polyethylene.  
1.2 This type of insulation is considered suitable for use on wire or cable that will be used for continuous operation at conductor temperatures up to 75 °C 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. Therefore, tests done on insulated wire or cable in this specification 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: 28-Feb-2014
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.07 - Electrical Insulating Materials

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:D1351 −14
Standard Specification for
Thermoplastic Polyethylene Insulation for Electrical Wire
1
and Cable
This standard is issued under the fixed designation D1351; 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* 2.2 ICEA Standard:
3
T-24-380 Guide for Partial-Discharge Procedure
1.1 This specification covers a thermoplastic insulation
which consists substantially of polyethylene.
3. Terminology
1.2 This type of insulation is considered suitable for use on
3.1 Definitions:
wire or cable that will be used for continuous operation at
3.1.1 Refer to Terminology D1711 for definitions of terms
conductor temperatures up to 75°C with a maximum conductor
used in this specification.
2
size of 1000 kcmil (507 mm ). The maximum voltage rating
3.2 Definitions of Terms Specific to This Standard:
shall not exceed 35 000Vfor power application or 9 000Vfor
3.2.1 aging (act of), n—exposure of materials to air at a
series lighting.
temperature of 100°C for 48 h.
1.3 In many instances the insulation material cannot be
4. Conductor Shields
testedunlessithasbeenformedaroundaconductor.Therefore,
tests done on insulated wire or cable in this specification are
4.1 Conductor shields shall be used on solid and stranded
solely to determine the relevant property of the insulation
conductors of power cables having rated circuit voltages above
material and not to test the insulated conductor or completed
2000 V. This requirement does not apply to series lighting
cable.
cables. Conductor shielding is conducting material at least
0.0025 in. (0.06 mm) thick applied over the surface of the
1.4 Whenever two sets of values are presented, in different
conductor. The options include conducting nonmetallic tape,
units, the values in the first set are the standard, while those in
conducting compound, or conducting cement.
parentheses are for information only.
5. Physical Properties
2. Referenced Documents
5.1 The polyethylene, before application to the conductor,
2
2.1 ASTM Standards:
shall comply with the requirements of Specification D1248 for
D1248 Specification for Polyethylene Plastics Extrusion
Type I; ClassA, B or C; Category 4 or 5; Grade E4 or E5. The
Materials for Wire and Cable
requirements of Specification D1248 do not apply to insulation
D1711 Terminology Relating to Electrical Insulation
removed from the conductor.
D2308 Specification for Thermoplastic Polyethylene Jacket
5.2 Insulation exposed to sunlight or weather requires
for Electrical Wire and Cable
Specification D1248, Class C compound or suitable protective
D2633 Test Methods for Thermoplastic Insulations and
coverings. Class C compound shall meet the minimum absorp-
Jackets for Wire and Cable
tion coefficient requirement in Table 1.
D3349 Test Method for Absorption Coefficient of Ethylene
Polymer Material Pigmented with Carbon Black
5.3 Specimens removed from the wire or cable and tested at
20 to 30°C (68 to 86°F) shall conform to the requirements for
physical properties specified in Table 1. Alternatively, the
insulation shall be air-oven aged without removal from the
1
This specification is under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and is the direct responsibility of conductor.
Subcommittee D09.07 on Electrical Insulating Materials.
5.4 Thickness of Insulation—The minimum average insula-
Current edition approved March 1, 2014. Published April 2014. Originally
approved in 1954. Last previous edition approved in 2008 as D1351 – 08. DOI: tion thickness shall be as specified in Table 2 or Table 3 of this
10.1520/D1351-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from The Insulated Cable Engineers Association, Inc. (ICEA), P.O.
the ASTM website. Box 1568, Carrollton, GA 30112, http://www.icea.net.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D1351−14
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
Unaged Requirements:
corresponding to a constant of 50 000 MΩ-1000 ft at 60°F
Tensile strength, min, psi (MPa) 1500 (10.4)
(15.6°C). When the temperature of the water in which the
Elongation at rupture, min, % 350
Ag
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1351 − 08 D1351 − 14 An American National Standard
Standard Specification for
Thermoplastic Polyethylene Insulation for Electrical Wire
1
and Cable
This standard is issued under the fixed designation D1351; 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*
1.1 This specification covers a thermoplastic insulation which consists substantially of polyethylene.
1.2 This type of insulation is considered suitable for use on wire or cable that will be used for continuous operation at conductor
2
temperatures up to 75 °C with a maximum conductor size of 1000 kcmil (507 mm ). 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. Therefore, tests
done on insulated wire or cable in this specification 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1248 Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable
D1711 Terminology Relating to Electrical Insulation
D2308 Specification for Thermoplastic Polyethylene Jacket for Electrical Wire and Cable
D2633 Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable
D3349 Test Method for Absorption Coefficient of Ethylene Polymer Material Pigmented with Carbon Black
2.2 ICEA Standard:
3
T-24-380 Guide for Partial-Discharge Procedure
3. Terminology
3.1 Definitions:
3.1.1 Refer to Terminology D1711 for definitions of terms used in this specification.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 aging (act of), n—exposure of materials to air at a temperature of 100 °C for 48 h.
4. Conductor Shields
4.1 Conductor shields shall be used on solid and stranded conductors of power cables having rated circuit voltages above 2000
V. This requirement does not apply to series lighting cables. Conductor shielding is conducting material at least 0.0025 in. (0.06
mm) thick applied over the surface of the conductor. The options include conducting nonmetallic tape, conducting compound, or
conducting cement.
1
This specification is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subcommittee
D09.18 on Solid Insulations, Non-Metallic Shieldings and Coverings for Electrical and Telecommunication Wires and Cables.
Current edition approved Jan. 1, 2008March 1, 2014. Published February 2008April 2014. Originally approved in 1954. Last previous edition approved in 20022008 as
D1351-02.-08. DOI: 10.1520/D1351-08.10.1520/D1351-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
3
Available from The Insulated Cable Engineers Association, Inc. (ICEA), P.O. Box 1568, Carrollton, GA 30112, http://www.icea.net.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1351 − 14
5. Physical Properties
5.1 The polyethylene, before application to the conductor, shall comply with the requirements of Specification D1248 for Type
I; Class A, B or C; Category 4 or 5; Grade E4 or E5. The requirements of Specification D1248 do not apply to insulation removed
from the conductor.
5.2 Insulation exposed to sunlight or weather requires Specification D1248, Class C compound or suitable protective coverings.
Class C compound shall meet the minimum absorption coefficient requirement in Table 1.
5.3 Specimens removed from the wire or cable and tested at 20 to 30 °C (68 to 8086 °F) shall conform to the requirements for
physical properties specified in Table 1. Alternatively, the insulation shall be air-oven aged without removal from the conductor.
5.4 Thickness of Insulation—The
...