ASTM D2655-00(2006)
(Specification)Standard Specification for Crosslinked Polyethylene Insulation for Wire and Cable Rated 0 to 2000 V
Standard Specification for Crosslinked Polyethylene Insulation for Wire and Cable Rated 0 to 2000 V
ABSTRACT
This specification covers crosslinked polymer insulation material consisting substantially of polyethylene or a polyethylene copolymer for electrical wires and cables in conductor, suitable for continuous use on power cables in wet and dry locations, having specified sizes and operating at specified voltage ratings and conductor temperatures. Materials covered by this specification are not sunlight and weather resistant unless they are carbon black pigmented or contain an additive system designed for this protection. Since the insulation cannot be tested unless it has been formed around a conductor, tests shall then be done on insulated wire solely to determine the relevant property of the insulation and not to test the conductor or completed cable. Materials shall meet the physical properties as follows: unaged tensile strength and elongation at rupture; tensile strength and elongation at rupture after air oven aging; heat distortion; filled and unfilled percent hot creep; and filled and unfilled percent hot set. Insulations shall also perform satisfactorily during tests for AC and DC voltage, insulation resistance, and accelerated water absorption.
SCOPE
1.1 This specification covers a crosslinked polyethylene insulation for electrical wires and cables in conductor sizes 14 AWG [2.08 mm2] and larger. The base polymer of this insulation consists substantially of polyethylene or a polyethylene copolymer.
1.2 This type of insulation is suitable for continuous use on power cables in wet and dry locations, for voltage ratings not exceeding 2000 V and at conductor temperatures not exceeding 90 C for normal operation. For copper conductors, the insulation may be applied over the uncoated metal.
1.3 Materials covered by this specification are not sunlight and weather resistant unless they are carbon black pigmented or contain an additive system designed for this protection.
1.4 In many instances the insulation cannot be tested unless it has been formed around a conductor. Therefore, tests are done on insulated wire in this standard solely to determine the relevant property of the insulation and not to test the conductor or completed cable.
1.5 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
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: D2655 – 00 (Reapproved 2006)
Standard Specification for
Crosslinked Polyethylene Insulation for Wire and Cable
Rated 0 to 2000 V
This standard is issued under the fixed designation D2655; 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 ICEAT-28-562 Test Method for Measurement of Hot Creep
of Polymeric Insulations
1.1 This specification covers a crosslinked polyethylene
insulation for electrical wires and cables in conductor sizes 14
3. Terminology
AWG [2.08 mm ] and larger. The base polymer of this
3.1 Definitions:
insulation consists substantially of polyethylene or a polyeth-
3.1.1 For definitions of terms used in this specification refer
ylene copolymer.
to Terminology D1711.
1.2 This type of insulation is suitable for continuous use on
3.2 Definitions of Terms Specific to This Standard:
power cables in wet and dry locations, for voltage ratings not
3.2.1 aging (act of), n—exposure of materials to air at 121
exceeding2000Vandatconductortemperaturesnotexceeding
°C for 168 h.
90 °C for normal operation. For copper conductors, the
insulation may be applied over the uncoated metal.
4. Physical Properties
1.3 Materials covered by this specification are not sunlight
4.1 The requirements for the insulation are listed inTable 1.
and weather resistant unless they are carbon black pigmented
or contain an additive system designed for this protection.
5. Electrical Requirements
1.4 In many instances the insulation cannot be tested unless
5.1 Order of Testing—Perform the ac voltage, insulation
it has been formed around a conductor. Therefore, tests are
resistance, and dc voltage tests in that order when any of these
done on insulated wire in this standard solely to determine the
tests are required. The sequence for other testing is not
relevant property of the insulation and not to test the conductor
specified.
or completed cable.
5.2 AC Voltage Test—Subject wires and cables to an ac test
1.5 Whenever two sets of values are presented, in different
voltage for a period of 5 min. Unless otherwise specified, omit
units, the values in the first set are the standard, while those in
this test if the dc voltage test described in 5.4 is to be
parentheses are for information only.
performed. Test at a voltage of 100 V/mil [4 kV/mm] based on
the specified nominal thickness of insulation for the rated
2. Referenced Documents
2 circuit voltage, phase to phase. Conduct the tests in accordance
2.1 ASTM Standards:
with Test Methods D470.
D470 Test Methods for Crosslinked Insulations and Jackets
5.3 Insulation Resistance—The insulated conductor shall
for Wire and Cable
have an insulation resistance equal to or greater than that
D1248 Specification for Polyethylene Plastics Extrusion
corresponding to a constant of 10 000 at 60 °F [15.6 °C].
Materials for Wire and Cable
When the temperature of the water in which the insulation is
D1711 Terminology Relating to Electrical Insulation
tested differs from 60 °F, apply a correction factor. Table 2 of
D2765 Test Methods for Determination of Gel Content and
Test Methods D470 contains the correction factors. Each
Swell Ratio of Crosslinked Ethylene Plastics
insulation manufacturer can furnish the 1 °F coefficient for the
2.2 ICEA Standard:
insulation material by using the procedure given in Test
Methods D470. Multiply the measured value by the correction
This specification is under the jurisdiction of ASTM Committee D09 on
factor to obtain the insulation-resistance value corrected to 60
Electrical and Electronic Insulating Materials and is the direct responsibility of
°F.
Subcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings, and Cover-
5.3.1 Where a nonconducting separator is applied between
ings for Electrical and Telecommunications Wires and Cables.
Current edition approved April 1, 2006. Published April 2006. Originally theconductorandinsulationorwhereaninsulatedconductoris
approved in 1967. Last previous edition approved in 2000 as D2655 – 00. DOI:
10.1520/D2655-00R06.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Insulated Cable Engineers Association, P. O. Box 440, South
Standards volume information, refer to the standard’s Document Summary page on Yarmouth, MA 02664 or Global Engineering Documen
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