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ASTM D902-12
Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation (Withdrawn 2020)
Automaticky přeložený název:
Standardní zkušební metody pro flexibilní pryskyřice potažené skleněné tkaniny a skelnou tkaninou pásky pro elektrické izolace
NORMA vydána dne 1.4.2012
Informace o normě:
Označení normy: ASTM D902-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2012
Kód zboží: NS-39682
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D902-12 :
Keywords:
breaking strength, coated glass fabric, dielectric breakdown voltage, dissipation factor, heat aging, permittivity, thermal endurance, thread count, Oleoresinous varnish-coated glass fabric/tape, Permittivity (dielectric constant)--electrical insulating materials, Permittivity method, Resins, Thermal endurance--electrical insulating materials, Breaking strength/tenacity--electrical insulating materials, Dielectric breakdown voltage, Dissipation factor, Electrical insulating tape
Doplňující informace
| Significance and Use | |||||||||||||||||||||||||||||||||||||||
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The electrical properties of resin-coated glass fabrics are affected by their temperature and moisture content. For this reason it is necessary to control these properties for a specified time immediately prior to testing in order to attain reasonably good reproducibility of test values. The time of exposure to the conditioning atmosphere must be long enough to permit the test specimen to reach a relatively stable value. Usually the moisture content of these materials has little effect on the mechanical properties. |
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| 1. Scope | |||||||||||||||||||||||||||||||||||||||
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1.1 These test methods cover procedures for the testing of resin-coated glass fabrics and glass fabric tapes (Note 1) to be used as electrical insulation. Note 1—Methods of testing varnished cloths and tapes are given in Methods D295. 1.2 The warp threads in fabrics are the threads that are parallel with the length dimension as manufactured. 1.3 The procedures appear as follows:
1.4 The values stated in inch-pound units are to be regarded as the standard. The values in 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statement are given in 35.1.1 and 58.1. |
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| 2. Referenced Documents | |||||||||||||||||||||||||||||||||||||||
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