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.
1.1 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 | Sections |
|
|
Brittleness Temperature | 18 to 21 |
Compatibility of Sleeving with Magnet Wire Insulation | 45 to 59 |
Conditioning | 6 |
Dielectric Breakdown Voltage | 12 to 17 |
Dielectric Breakdown Voltage After Short-Time Aging | 29 to 33 |
Dimensions | 7 to 11 |
Effect of Push-Back After Heat Aging | 73 to 78 |
Flammability |
ASTM D350-13 Referenced Document
ASTM D350-13 history
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