ASTM D2802-98
(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
SCOPE
1.1 This specification covers an ozone-resisting cross-linked rubber insulation compound for electrical wires and cables. The rubber hydrocarbon component of this material consists substantially of ethylene-propylene copolymer (EPM) or ethylene-propylene 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 35000 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 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 The values stated in inch-pound units, except for temperature, are to be regarded as the standard. The values in parentheses are for informational purposes only.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 2802 – 98
Standard Specification for
Ozone-Resistant Ethylene-Alkene Polymer Insulation
for Wire and Cable
This standard is issued under the fixed designation D 2802; 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 D 470 Test Methods for Crosslinked Insulations and Jackets
for Wire and Cable
1.1 This specification covers an ozone-resisting crosslinked
D 1711 Terminology Relating to Electrical Insulation
rubber insulation compound for electrical wires and cables.
2.2 ICEA Standard:
The polymer shall consist substantially of ethylene-alkene
T-24-380 Guide for Partial Discharge Procedure
copolymer (EAM) or ethylene-alkene diene terpolymer
(EADM). This polymer type includes ethylenepropylene co-
3. Terminology
polymer (EPM) and ethylenepropylene diene terpolymer
3.1 Definitions: For definitions of terms used in this speci-
(EPDM).
fication, refer to Terminology D 1711.
1.2 This type of insulation is considered suitable for use on
3.2 Definition of Term Specific to This Standard:
wire or cable which will be used in wet and dry locations with
3.2.1 aging (act of), n—exposure of materials to air at a
conductor temperatures up to 90°C during continuous opera-
temperature of 121°C for 168 h.
tion, to 130°C during emergency overload conditions, and to
250°C during short-circuit conditions. It is considered suitable
4. Physical Properties
for all sizes and voltage classifications of single- and multiple-
4.1 The crosslinked insulation shall conform to the require-
conductor power cables up to 35 000 V phase-to-phase at the
ments for physical properties specified in Table 1.
100 % insulation level and up to 25 000 V at the 133 %
4.2 The values specified in Table 1 are applicable only to
insulation level as listed in Table 1D, Conductor Sizes,
insulation having a nominal wall thickness of 0.030 in. (0.76
Insulation Thicknesses, Test Voltages, and Corona Extinction
mm) or greater.
Levels of Ethylene-Propylene Rubber Insulation, of Test Meth-
ods D 470. Single-conductor cables shall have a supplementary
5. Electrical Requirements
covering over the insulation, and multiple-conductor cables
5.1 Order of Testing—Perform the ac voltage, withstand,
shall have an overall covering.
insulation resistance, and dc voltage withstand tests in that
1.3 Whenever two sets of values are presented, in different
order when any of these tests are required. The sequence for
units, the values in the first set are the standard, while those in
other testing is not specified.
parentheses are for information only.
5.2 AC Voltage Withstand Test—Each insulated conductor
1.4 In many instances the insulation material cannot be
in the completed cable shall withstand for 5 min the ac test
tested unless it has been formed around a conductor or cable.
voltage shown in Table 1D, Conductor Sizes, Insulation
Therefore, tests are done on insulated wire or cable in this
Thicknesses, Test Voltages, and Corona Extinction Levels of
specification solely to determine the relevant property of the
Ethylene-Propylene Rubber Insulation, of Test Methods D 470,
insulation and not to test the conductor or completed cable.
except that for nonshielded conductors rated 5000 V or less, the
dc test voltage described in 5.5 may be substituted.
2. Referenced Documents
5.3 Insulation Resistance:
2.1 ASTM Standards:
5.3.1 Each insulated conductor in the completed cable shall
have an insulation resistance value of not less than that
corresponding to a constant of 20 000 at 15.6°C. When the
This specification is under the jurisdiction of ASTM Committee D-9 on
temperature of the water in which the insulation is tested differs
Electrical and Electronic Insulating Materials and is the direct responsibility of
from 15.6°C, the measured value obtained shall be multiplied
Subcommittee D09.18 on Solid Insulations, Nonmetallic Shieldings, and Coverings
for Electrical and Telecommunications Wires and Cables. Members of ASTM
Committees D-2 on Petroleum Products and Lubricants, and B-7 on Light Metals
and Alloys, have contributed to this specification. Annual Book of ASTM Standards, Vol 10.01.
Current edition approved May 10, 1998. Published January 1999. Originally Available from the Insulated Cable Engineers’ Assn., P.O. Box 440, S.
published as D 2802 – 70. Last previous edition D 2802 – 97. Yarmouth, MA 02664.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D2802–98
TABLE 1 Physical Property Requirements for Ozone-Resistant-
5.7 Partial Discharge (Corona) Level Test:
Type EAM or EADM Insulation
5.7.1 Each length of completed shielded cable rated for
Physical Requirements (original):
service at 2001 V and above shall
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