ASTM D1523-00

Standard Specification for Synthetic Rubber Insulation for Wire and Cable, 90°C Operation

SCOPE
1.1 This specification covers a crosslinked insulating compound for electrical wires and cables. The rubber polymer is primarily composed of synthetic rubber.
1.2 This type of insulation is suitable for continuous operation at conductor temperatures not exceeding 90°C in dry locations, and operating voltages not exceeding 2000 V. This insulation may have low-temperature limitations. Consult the manufacturer for specific recommendations for installation.
1.3 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.
1.4 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: 09-Sep-2000
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaced By: ASTM D1523-00(2006) - Standard Specification for Synthetic Rubber Insulation for Wire and Cable, 90°C Operation (Withdrawn 2011)
• Effective Date: 01-Oct-2006

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 1523 – 00
Standard Specification for
Synthetic Rubber Insulation for Wire and Cable, 90°C
Operation
This standard is issued under the fixed designation D 1523; 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.
TABLE 1 Physical Properties for Synthetic Rubber Insulation,
1. Scope
A
90°C Operation
1.1 This specification covers a crosslinked insulating com-
Unaged Requirements:
pound for electrical wires and cables. The rubber polymer is
Tensile strength, min, psi (MPa) 700 (4.8)
primarily composed of synthetic rubber.
Elongation at rupture, min, % 300
Set in 2-in. (or 50-mm) gage length, max, % 25
1.2 This type of insulation is suitable for continuous opera-
Aged Requirements:
tion at conductor temperatures not exceeding 90°C in dry
After Air Pressure Heat Test at 1276 1°C for 42 h:
locations, and operating voltages not exceeding 2000 V. This Tensile strength and elongation, min, percentage 50
of unaged value
insulation may have low-temperature limitations. Consult the
After Air Oven Test at 121 6 1°C for 168 h:
manufacturer for specific recommendations for installation.
Tensile strength and elongation, min, percentage 50
1.3 In many instances the insulation cannot be tested unless of unaged value
A
it has been formed around a conductor. Therefore, tests are
The values specified are applicable to insulation having a nominal wall
thickness of 0.030 in. (0.76 mm) or greater.
done on insulated wire in this standard solely to determine the
relevant property of the insulation and not to test the conductor
4.2 Thickness of Insulation —Table number 1A of Test
or completed cable.
Methods D 470 lists the minimum average thickness for the
1.4 Whenever two sets of values are presented, in different
insulation. The required minimum thickness is 90 % of that
units, the values in the first set are the standard, while those in
given in Table number 1A of Test Methods D 470.
parentheses are for information only.
5. Electrical Requirements
2. Referenced Documents
5.1 Order of Testing—Perform the ac voltage, insulation
2.1 ASTM Standards:
resistance, and dc voltage tests in that order when any of these
D 470 Test Methods for Crosslinked Insulations and Jackets
2 tests are required. The sequence for other testing is not
for Wire and Cable
2 specified.
D 1711 Terminology Relating to Electrical Insulation
5.2 AC Voltage Test—Unless otherwise specified, omit this
3. Terminology test if the dc voltage test described in 5.4 is to be performed.
Test each insulated conductor for 5 min at the ac withstand
3.1 Definitions:
voltage given in Table number 1A of Test Methods D 470
3.1.1 For definitions of terms used in this specification refer
under the columns labeled “Other Than Ozone-Resisting Insu-
to Terminology D 1711.
lations.”
3.2 Definitions of Terms Specific to This Standard:
5.3 Insulation Resistance:
3.2.1 aging (act of), n—exposure of materials to air at
5.3.1 The insulated conductor shall have an insulation
121°C for 168 h or heat and pressure at 127°C for 42 h.
resistance value of at least that corresponding to a constant of
4. Physical Properties 4000 at 60°F (15.6°C).
5.3.2 If the temperature at the time measurement w
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