ASTM D2768-95(2001)

Standard Specification for General-Purpose Ethylene-Propylene Rubber Jacket for Wire and Cable (Withdrawn 2007)

SCOPE
1.1 This specification covers a weather and ozone-resisting crosslinked compound for use as the outer covering or jacket on insulated wires and cables. The polymer component of this material consists substantially of ethylenepropylene copolymer (EPM) or ethylene-propylene terpolymer (EPDM).
1.2 The values stated in inch-pound units are the standard, except in cases where SI units are more appropriate. The values in parentheses are for information only.
WITHDRAWN RATIONALE
This specification covers a weather and ozone-resisting crosslinked compound for use as the outer covering or jacket on insulated wires and cables. The polymer component of this material consists substantially of ethylenepropylene copolymer (EPM) or ethylene-propylene terpolymer (EPDM).
Formerly under the jurisdiction of Committee D09 on Electrical and Electronic Insulating Materials, this specification was withdrawn without replacement in October 2007 because the committee was unsure of the utility of this document to the industry and did not wish to maintain a document for which there may be little or no expertise on the committee.

General Information

• Status: Withdrawn
• Publication Date: 14-Feb-1995
• Withdrawal Date: 17-Oct-2007
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaces: ASTM D2768-95 - Standard Specification for General-Purpose Ethylene-Propylene Rubber Jacket for Wire and Cable
• Effective Date: 15-Feb-1995
• Referred By: ASTM F2321-23 - Standard Specification for Flexible and Rigid Insulated Temporary By-Pass Jumpers
• Effective Date: 15-Feb-1995
• Referred By: ASTM F855-23 - Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment
• Effective Date: 15-Feb-1995

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2768 – 95 (Reapproved 2001)
Standard Specification for
General-Purpose Ethylene-Propylene Rubber Jacket for
1
Wire and Cable
This standard is issued under the fixed designation D 2768; 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 3.1.1 Surface Resistivity—The jacket shall have a surface
resistivity equal to or greater than 200 000 MV.
1.1 This specification covers a weather and ozone-resisting
3.1.2 U-Bend Discharge—There shall be no cable failure
crosslinked compound for use as the outer covering or jacket
nor cracks in the jacket when a sample of completed cable is
on insulated wires and cables. The polymer component of this
subjected to the U-bend discharge test at 150V/mil (6 kV/mm)
material consists substantially of ethylenepropylene copolymer
for at least 6 h.
(EPM) or ethylene-propylene terpolymer (EPDM).
1.2 The values stated in inch-pound units are the standard,
4. Test Applicable for Sunlight and Weather Resistant
exceptincaseswhereSIunitsaremoreappropriate.Thevalues
Materials
in parentheses are for information only.
4.1 The jacket shall retain a minimum of 80 % of its unaged
2. Referenced Documents tensilestrengthandelongationafter720hofexposureinadual
carbon-arc apparatus. Prepare the specimens in accordance
2.1 ASTM Standards:
with Test Methods D 470 for physical tests of insulations and
D 257 Test Methods for DC Resistance or Conductance of
2
jackets. Perform the test in accordance with Practice D 1499
Insulating Materials
using Method 1 of Practice G 23.
D 470 Test Methods for Crosslinked Insulations and Jackets
2
for Wire and Cable
5. Physical Requirements
D 1499 Practice for Filtered Open-Flame Carbon-Arc Ex-
3 5.1 The crosslinked jacket shall conform to the physical
posures of Plastics
properties specified in Table 1.
G 23 Practice for Operating Light-Exposure Apparatus
(Carbon-Arc Type) With and Without Water for Exposure
6. Sampling
4
of Nonmetallic Materials
6.1 Sample the jacket in accordance with Test Methods
3. Electrical Requirements D 470.
3.1 Whenusedonsingleconductornonshieldedcablesrated
7. Test Methods
2001 through 5000 V phase to phase, the jacket shall meet the
7.1 Unless otherwise instructed, test the jacket in accor-
following requirements of Test Methods D 470:
dance with Te
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