ASTM International - ASTM D470-21
Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
|Publication Date:||15 January 2021|
|ICS Code (Insulating materials in general):||29.035.01|
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... View More
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.View Less
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:
|AC and DC Voltage Withstand Tests||22 to 29|
|Capacitance and Dissipation Factor Tests||38 to 44|
|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.