ASTM D470-21
(Test Method)Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
SIGNIFICANCE AND USE
5.1 Physical tests, properly interpreted, provide information with regard to the physical properties of the insulation or jacket. The physical test values give an approximation of how the insulation will physically perform in its service life. Physical tests provide useful data for research and development, engineering design, quality control, and acceptance or rejection under specifications.
SCOPE
1.1 These test methods cover procedures for testing crosslinked insulations and jackets for wire and cable. To determine the test to be made on the particular insulation or jacket, refer to the product specification for that type. These test methods do not apply to the class of products known as flexible cords.
1.2 In many instances the insulation or jacket cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on insulated or jacketed wire or cable in these test methods solely to determine the relevant property of the insulation or jacket and not to test the conductor or completed cable.
1.3 These test methods appear in the following sections:
Test Method
Section(s)
AC and DC Voltage Withstand Tests
22 to 29
Capacitance and Dissipation Factor Tests
38 to 44
Cold Bend
124
Cold Bend, Long-time Voltage Test on Short Specimens
51 to 57
Double AC Voltage Test on Short Specimens
45 to 50
Electrical Tests of Insulation
17 to 64
Heat Distortion Test
123
Horizontal Flame Test
100
(Test Method D7936)
Insulation Resistance Tests on Completed Cable
30 to 37
Mineral Filler Content, Determination of
107 to 111
Ozone Resistance Test
87 to 99
Partial-Discharge Test
58 to 64
Physical Tests of Insulation and Jacket Compounds
5 to 16
Surface Resistivity Test
112 to 116
Track Resistance Test
125 to 128
U-Bend Discharge Test
117 to 121
Water Absorption Test
65 to 71
Water Absorption Test, Accelerated
72 to 86
Water Absorption Test on Fibrous Coverings
101 to 106
1.4 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in the parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section 4.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D470 − 21
Standard Test Methods for
1
Crosslinked Insulations and Jackets for Wire and Cable
This standard is issued under the fixed designation D470; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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* responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 These test methods cover procedures for testing cross-
mine the applicability of regulatory limitations prior to use.
linked insulations and jackets for wire and cable.To determine
For specific hazards see Section 4.
the test to be made on the particular insulation or jacket, refer
1.6 This international standard was developed in accor-
totheproductspecificationforthattype.Thesetestmethodsdo
dance with internationally recognized principles on standard-
not apply to the class of products known as flexible cords.
ization established in the Decision on Principles for the
1.2 In many instances the insulation or jacket cannot be
Development of International Standards, Guides and Recom-
tested unless it has been formed around a conductor or cable.
mendations issued by the World Trade Organization Technical
Therefore, tests are done on insulated or jacketed wire or cable
Barriers to Trade (TBT) Committee.
in these test methods solely to determine the relevant property
of the insulation or jacket and not to test the conductor or
2. Referenced Documents
completed cable.
2
2.1 ASTM Standards:
1.3 These test methods appear in the following sections:
D149Test Method for Dielectric Breakdown Voltage and
Test Method Section(s)
DielectricStrengthofSolidElectricalInsulatingMaterials
at Commercial Power Frequencies
AC and DC Voltage Withstand Tests 22 to 29
Capacitance and Dissipation Factor Tests 38 to 44 D150Test Methods forAC Loss Characteristics and Permit-
Cold Bend 124
tivity (Dielectric Constant) of Solid Electrical Insulation
Cold Bend, Long-time Voltage Test on Short Specimens 51 to 57
D257Test Methods for DC Resistance or Conductance of
Double AC Voltage Test on Short Specimens 45 to 50
Electrical Tests of Insulation 17 to 64 Insulating Materials
Heat Distortion Test 123
D412TestMethodsforVulcanizedRubberandThermoplas-
Horizontal Flame Test 100
tic Elastomers—Tension
(Test Method
D7936)
D454TestMethodforRubberDeteriorationbyHeatandAir
Insulation Resistance Tests on Completed Cable 30 to 37
Pressure
Mineral Filler Content, Determination of 107 to 111
D572Test Method for Rubber—Deterioration by Heat and
Ozone Resistance Test 87 to 99
Partial-Discharge Test 58 to 64
Oxygen
Physical Tests of Insulation and Jacket Compounds 5 to 16
D573Test Method for Rubber—Deterioration in an Air
Surface Resistivity Test 112 to 116
Oven
Track Resistance Test 125 to 128
U-Bend Discharge Test 117 to 121 D1193Specification for Reagent Water
Water Absorption Test 65 to 71
D1711Terminology Relating to Electrical Insulation
Water Absorption Test, Accelerated 72 to 86
D2132Test Method for Dust-and-Fog Tracking and Erosion
Water Absorption Test on Fibrous Coverings 101 to 106
Resistance of Electrical Insulating Materials
1.4 Whenever two sets of values are presented, in different
D3755Test Method for Dielectric Breakdown Voltage and
units, the values in the first set are the standard, while those in
DielectricStrengthofSolidElectricalInsulatingMaterials
the parentheses are for information only.
Under Direct-Voltage Stress
1.5 This standard does not purport to address all of the
D5423Specification for Forced-Convection Laboratory Ov-
safety concerns, if any, associated with its use. It is the
ens for Evaluation of Electrical Insulation
1
These test methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
2
Subcommittee D09.07 on Electrical Insulating Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 15, 2021. Published February 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1937. Last previous edition approved in 2013 as D470–13. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D0470-21. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Ha
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D470 − 13 D470 − 21
Standard Test Methods for
1
Crosslinked Insulations and Jackets for Wire and Cable
This standard is issued under the fixed designation D470; 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 Scope*
1.1 These test methods cover procedures for testing crosslinked insulations and jackets for wire and cable. To determine the test
to be made on the particular insulation or jacket, refer to the product specification for that type. These test methods do not apply
to the class of products known as flexible cords.
1.2 In many instances the insulation or jacket cannot be tested unless it has been formed around a conductor or cable. Therefore,
tests are done on insulated or jacketed wire or cable in these test methods solely to determine the relevant property of the insulation
or jacket and not to test the conductor or completed cable.
1.3 The procedures These test methods appear in the following sections:
Sections
AC and DC Voltage Withstand Tests 22 to 29
Capacitance and Dissipation Factor Tests 38 to 44
Cold Bend 128
Cold Bend, Long-Time Voltage Test on Short Specimens 51 to 57
Double AC Voltage Test on Short Specimens 45 to 50
Electrical Tests of Insulation 17 to 64
Heat Distortion Test 127
Horizontal Flame Test 100 to 104
Insulation Resistance Tests on Completed Cable 30 to 37
Mineral Filler Content, Determination of 111 to 115
Ozone Resistance Test 87 to 99
Partial-Discharge Test 58 to 64
Physical Tests of Insulation and Jacket Compounds 5 to 16
Surface Resistivity Test 116 to 120
Track Resistance Test 129 to 132
U-Bend Discharge Test 121 to 125
Water Absorption Test 65 to 71
Water Absorption Test, Accelerated 72 to 86
Water Absorption Test on Fibrous Coverings 105 to 110
Test Method Section(s)
AC and DC Voltage Withstand Tests 22 to 29
Capacitance and Dissipation Factor Tests 38 to 44
Cold Bend 124
Cold Bend, Long-time Voltage Test on Short Specimens 51 to 57
Double AC Voltage Test on Short Specimens 45 to 50
1
These test methods are under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and are the direct responsibility of Subcommittee
D09.07 on Electrical Insulating Materials.
Current edition approved Feb. 1, 2013Jan. 15, 2021. Published February 2013February 2021. Originally approved in 1937. Last previous edition approved in 20052013
as D470 – 05.D470 – 13. DOI: 10.1520/D0470-13. 10.1520/D0470-21.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D470 − 21
Electrical Tests of Insulation 17 to 64
Heat Distortion Test 123
Horizontal Flame Test 100
(Test Method
D7936)
Insulation Resistance Tests on Completed Cable 30 to 37
Mineral Filler Content, Determination of 107 to 111
Ozone Resistance Test 87 to 99
Partial-Discharge Test 58 to 64
Physical Tests of Insulation and Jacket Compounds 5 to 16
Surface Resistivity Test 112 to 116
Track Resistance Test 125 to 128
U-Bend Discharge Test 117 to 121
Water Absorption Test 65 to 71
Water Absorption Test, Accelerated 72 to 86
Water Absorption Test on Fibrous Coverings 101 to 106
1.4 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in the
parentheses are for information only.
1.5 This standard does not purport to address all of the safety problems,concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and
determine the applicability of regulatory limitations prior to use. For specific hazards see Section 4.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Sol
...
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