ASTM D470-21

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.

15.01.2021

15.01.2021

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