Standard Specification for Poly(Vinyl Chloride) Insulation for Wire and Cable, 75&#176C Operation

SCOPE
1.1 This specification covers a thermoplastic insulation of poly(vinyl chloride) or the copolymer of vinyl chloride and vinyl acetate.
1.2 This insulation is recommended for use in power and control circuits at temperatures not higher than 75°C. At a thickness of 15 mils (0.38 mm), application is limited to voltage ratings below 300 V, and to dry locations. At a thickness of 30 mils, the application range is widened to dry or wet applications, and to a voltage rating of 600 V.
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 material and not to test the conductor or completed cable.

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09-Mar-2002
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ASTM D2220-02 - Standard Specification for Poly(Vinyl Chloride) Insulation for Wire and Cable, 75&#176C Operation
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2220 – 02
Standard Specification for
Poly(Vinyl Chloride) Insulation for Wire and Cable, 75°C
1
Operation
This standard is issued under the fixed designation D 2220; 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 2633 Methods of Testing Thermoplastic Insulations and
3
Jackets for Wire and Cable
1.1 This specification covers a thermoplastic insulation of
poly(vinyl chloride) or the copolymer of vinyl chloride and
3. Terminology
vinyl acetate.
3.1 Definitions:
1.2 This insulation is recommended for use in power and
3.1.1 Fordefinitionsoftermsusedinthisspecification,refer
control circuits at temperatures not higher than 75°C. At a
to Terminology D 1711.
thickness of 15 mils (0.38 mm), application is limited to
3.2 Definition of Term Specific to This Standard:
voltage ratings below 300 V, and to dry locations. At a
3.2.1 aging (act of), n—exposure of materials to air or oil at
thickness of 30 mils, the application range is widened to dry or
a temperature and a time as specified in Table 1.
wet applications, and to a voltage rating of 600 V.
1.3 Whenever two sets of values are presented, in different
4. Physical Properties
units, the values in the first set are the standard, while those in
4.1 The insulation shall conform to the requirements for
parentheses are for information only.
physical properties prescribed in Table 1.
1.4 In many instances the insulation material cannot be
tested unless it has been formed around a conductor or cable.
5. Electrical Requirements
Therefore, tests are done on insulated wire or cable in this
5.1 Perform the ac voltage, insulation resistance, and dc
specification solely to determine the relevant property of the
voltage tests in that order when any of these tests are required.
insulation material and not to test the conductor or completed
The sequence for other testing is not specified.
cable.
5.2 AC Voltage Test—Test the insulated conductor at the ac
withstand voltage as specified in Table 2. This test may be
2. Referenced Documents
omitted if the dc withstand voltage test described in 5.4 is
2.1 ASTM Standards:
2 performed.
D 1711 Terminology Relating to Electrical Insulation
5.3 Insulation Resistance:
2
5.3.1 Insulated conductors in sizesAWG 14 (2.08 mm ) and
1
larger shall have an insulation resistance of at least that
This specification is under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and is the direct responsibility of
corresponding to a constant of 2000 M V-1000 ft at 60°F
SubcommitteeD09.18onSolidInsulations,Non-metallicShieldings,andCoverings
(15.6°C).
for Electrical and Telecommunication Wires and Cables.
Current edition approved March 10, 2002. Published May 2002. Originally
published as D 2220 – 63T. Last previous edition D 2220 – 97.
2 3
Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 10.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D 2220
TABLE 2 Conductor Sizes, Insulation Thicknesses, and Test
5.5 Accelerated Water Absorption—The insulation shall
Voltages for Poly(Vinyl Chloride)-Insulated Control and Power
meet the requirements in Table 3.
Cables
5.6 Dielectric Strength Retention— The insulation shall be
NOTE 1—For cables or conditions of service where mechanical stresses
capable of meeting a dielectric strength retention of at least
govern,suchasinsubmarinecablesorlongverticalrisers,theseminimum
60 % of the original dielectric strength when tested at a
conductor sizes may not be strong enough.
temperature of 75 6 1°C.
NOTE 2—The thicknesses given in Table 2 apply to aerial cables and to
single conductors installed in conduits above ground and to the individual
6. Thickness of Insulation
conductors of all multiple-conductor cables having a common jacket,
6.1 The average thickness of the insulation shall be at least
metallic sheath, or protective covering over the assembly, with the
that prescribed in Table 2. The minimum thickness shall be at
following exceptions: For single-conductor cables for installation in
least 90 % of the thickness prescribed in Table 2.
underground ducts or direct earth burial, and for all submarine cables, add
15 mils (0.38 mm) to the insulation thicknesses given in Table 2, when
7. Workmanship, Finish, and Appearance
such cables do not have a thermoplastic jacket or metallic sheath over the
7.1 Apply the insulation directly to the surface of the
assembly.
NOTE 3—Where the th
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