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ASTM D350 - 21
Standard Test Methods for Flexible Treated Sleeving Used for Electrical Insulation
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Significance and Use
12.1 The dielectric breakdown voltage of the sleeving is of importance as a measure of its ability to withstand electrical stress without failure. This value does not correspond to the dielectric breakdown voltage expected in service, but is of value in comparing different materials or different lots, in controlling manufacturing processes or, when coupled with experience, for a limited degree of design work. The comparison of dielectric breakdown voltage of the same sleeving before and after environmental conditioning (moisture, heat, and the like) gives a measure of its ability to resist these effects. For a more detailed discussion, refer to Test Method D149.
1. Scope
1.1 These test methods cover procedures for testing electrical insulating sleeving comprising a flexible tubular product made from a woven textile fibre base, such as cotton, rayon, nylon, or glass, thereafter impregnated, or coated, or impregnated and coated, with a suitable dielectric material.
1.2 The procedures appear in the following sections:
| Procedures | Section(s) |
|
|
|
| Selection of Test Material | 5 |
| Conditioning | 6 |
| Dimensions | 7 to 11 |
| Dielectric Breakdown Voltage | 12 to 17 |
| Brittleness Temperature | 18 to 21 |
| Flammability (See Test Methods D8355) | 22 to 23 |
| Dielectric Breakdown Voltage After Short-Time Aging | 24 to 28 |
| Oil Resistance | 29 to 32 |
| Thermal Endurance | 33 to 39 |
| Compatibility of Sleeving with Magnet Wire Insulation | 40 to 54 |
| Solvent Resistance | 55 to 60 |
| Hydrolytic Stability | 61 to 67 |
| Effect of Push-Back After Heat Aging | 68 to 73 |
1.3 The values stated in inch-pound units, except for °C, are to be regarded as the standard. The values in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This is a fire-test-response standard. See Test Methods D8355, which contains procedures for flammability tests.
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 hazard statements, see 40.2 and 58.1.1.
Note 1: This standard resembles IEC 60684-2, Specification for Flexible Insulating Sleeving—Part 2 Methods of Test, in a number of ways, but is not consistently similar throughout. The data obtained using either standard are not necessarily technically equivalent.
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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
D374 Test Methods for Thickness of Solid Electrical Insulation (Metric) D0374_D0374M
D471 Test Method for Rubber PropertyEffect of Liquids
D746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact
D876 Test Methods for Nonrigid Vinyl Chloride Polymer Tubing Used for Electrical Insulation
D1711 Terminology Relating to Electrical Insulation
D2307 Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire
D3487 Specification for Mineral Insulating Oil Used in Electrical Apparatus
D3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
D6054 Practice for Conditioning Electrical Insulating Materials for Testing
D8355 Test Methods for Flammability of Electrical Insulating Materials Used for Sleeving or Tubing
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
E176 Terminology of Fire Standards
ISO Standard
ISO13943 Fire SafetyVocabularyIEC Standard
IEC60684-2 Specification for Flexible Insulating SleevingPart 2 Methods of Test Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.IEEE Standard
IEEE101 Guide for the Statistical Analysis of Thermal Life Test Data Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), 445 Hoes Ln., Piscataway, NJ 08854-4141, http://www.ieee.org.ICS Code
ICS Number Code 29.035.20 (Plastic and rubber insulating materials)
UNSPSC Code
UNSPSC Code 39121404(Electrical sleeves)
Referencing This Standard
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DOI: 10.1520/D0350-21
Citation Format
ASTM D350-21, Standard Test Methods for Flexible Treated Sleeving Used for Electrical Insulation, ASTM International, West Conshohocken, PA, 2021, www.astm.org
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