ASTM D2802-03(2010)
(Specification)Standard Specification for Ozone-Resistant Ethylene-Alkene Polymer Insulation for Wire and Cable
Standard Specification for Ozone-Resistant Ethylene-Alkene Polymer Insulation for Wire and Cable
ABSTRACT
This specification covers an ozone-resisting crosslinked rubber insulation compound for electrical wires and cables. The polymer shall consist substantially of ethylene-alkene copolymer (EAM) or ethylene-alkene diene terpolymer (EADM). This polymer type includes ethylenepropylene copolymer (EPM) and ethylenepropylene diene terpolymer (EPDM). The crosslinked insulation shall conform to the requirements for physical properties specified. Tests shall be performed in accordance to the following test methods: AC voltage withstand test; insulation resistance; DC voltage withstand tests; capacitance and dissipation factor; partial discharge level test; accelerated water absorption; and ozone resistance.
SCOPE
1.1 This specification covers an ozone-resisting crosslinked rubber insulation compound for electrical wires and cables. The polymer shall consist substantially of ethylene-alkene copolymer (EAM) or ethylene-alkene diene terpolymer (EADM). This polymer type includes ethylenepropylene copolymer (EPM) and ethylenepropylene diene terpolymer (EPDM).
1.2 This type of insulation is considered suitable for use on wire or cable which will be used in wet and dry locations with conductor temperatures up to 90°C during continuous operation, to 130°C during emergency overload conditions, and to 250°C during short-circuit conditions. It is considered suitable for all sizes and voltage classifications of single- and multiple-conductor power cables up to 35 000 V phase-to-phase at the 100 % insulation level and up to 25 000 V at the 133 % insulation level as listed in Table 1D, Conductor Sizes, Insulation Thicknesses, Test Voltages, and Corona Extinction Levels for Ethylene-Propylene Rubber Insulation, of Test Methods D470. Single-conductor cables shall have a supplementary covering over the insulation, and multiple-conductor cables shall have an overall covering.
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.
1.4 In many instances the insulation material cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on insulated wire or cable in this specification solely to determine the relevant property of the insulation and not to test the conductor or completed cable.
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Standards Content (Sample)
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Designation:D2802 −03(Reapproved 2010)
Standard Specification for
Ozone-Resistant Ethylene-Alkene Polymer Insulation
for Wire and Cable
This standard is issued under the fixed designation D2802; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers an ozone-resisting crosslinked
D470 Test Methods for Crosslinked Insulations and Jackets
rubber insulation compound for electrical wires and cables.
for Wire and Cable
The polymer shall consist substantially of ethylene-alkene
D1711 Terminology Relating to Electrical Insulation
copolymer (EAM) or ethylene-alkene diene terpolymer
(EADM). This polymer type includes ethylenepropylene copo-
2.2 ICEA Standard:
lymer (EPM) and ethylenepropylene diene terpolymer
T-24-380 Guide for Partial Discharge Procedure
(EPDM).
3. Terminology
1.2 This type of insulation is considered suitable for use on
3.1 Definitions: For definitions of terms used in this
wire or cable which will be used in wet and dry locations with
specification, refer to Terminology D1711.
conductor temperatures up to 90°C during continuous
operation, to 130°C during emergency overload conditions,
3.2 Definitions of Terms Specific to This Standard:
and to 250°C during short-circuit conditions. It is considered
3.2.1 aging (act of), n—exposure of materials to air at a
suitable for all sizes and voltage classifications of single- and
temperature of 121°C for 168 h.
multiple-conductor power cables up to 35 000 V phase-to-
phase at the 100 % insulation level and up to 25 000 V at the
4. Physical Properties
133 % insulation level as listed in Table 1D, Conductor Sizes,
4.1 The crosslinked insulation shall conform to the require-
Insulation Thicknesses, Test Voltages, and Corona Extinction
ments for physical properties specified in Table 1.
Levels for Ethylene-Propylene Rubber Insulation, of Test
4.2 The values specified in Table 1 are applicable only to
Methods D470. Single-conductor cables shall have a supple-
insulation having a nominal wall thickness of 0.030 in. (0.76
mentary covering over the insulation, and multiple-conductor
mm) or greater.
cables shall have an overall covering.
1.3 Whenever two sets of values are presented, in different
5. Electrical Requirements
units, the values in the first set are the standard, while those in
5.1 Order of Testing—Perform the ac voltage withstand,
parentheses are for information only.
insulation resistance, and dc voltage withstand tests in that
1.4 In many instances the insulation material cannot be
order when any of these tests are required. The sequence for
tested unless it has been formed around a conductor or cable.
other testing is not specified.
Therefore, tests are done on insulated wire or cable in this
5.2 AC Voltage Withstand Test—Eachinsulatedconductorin
specification solely to determine the relevant property of the
the completed cable shall withstand for 5 min the ac test
insulation and not to test the conductor or completed cable.
voltage shown in Table 1D, Conductor Sizes, Insulation
Thicknesses, Test Voltages, and Corona Extinction Levels for
Ethylene-Propylene Rubber Insulation, of Test Methods D470,
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. Members of ASTM For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Committees D02 on Petroleum Products and Lubricants, and B07 on Light Metals contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and Alloys, have contributed to this specification. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2010. Published October 2010. Originally the ASTM website.
approved in 1970. Last previous edition approved in 2003 as D2802 – 03. DOI: Available from the Insulated Cable Engineers’ Assn., P.O. Box 440, S.
10.1520/D2802-03R10. Yarmouth, MA 02664.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D2802−03 (2010)
TABLE 1 Physical Property Requirements for Ozone-Resistant-
insulated conductor rated for service at 5001Vand above shall
Type EAM or EADM Insulation
be tested for capacitance and dissipation factor with suitable
Physical Requirements (original):
60-Hz equipment, and shall have a permittivity not exceeding
Tensile strength, min, psi (MPa) 700 (4.8)
4.0 and dissipation factor not exceeding 0.02. The measure-
Elongation at rupture, min, % 250
ments shall be made at the rated voltage to ground of the cable
Physical Requirements (after aging in an
air-oven at 121 ± 1°C for 168 h):
under test.
Tensile strength, min, % of unaged value
Elongation at rupture, min, % of unaged value 75 5.7 Partial Disch
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