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Standard Test Methods for Rigid Tubes Used for Electrical Insulation (Withdrawn 2020)
Automaticky přeložený název:
Standardní zkušební metody pro tuhé trubky pro elektrické izolace
NORMA vydána dne 1.11.2013
Označení normy: ASTM D348-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2013
Kód zboží: NS-23784
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
compressive strength, density, dielectric strength, dissipation factor, permittivity, rigid tubes, tensile strength, thermosetting laminate, vulcanized fibre, water absorption, ICS Number Code 29.120.10 (Conduits for electrical purposes)
Significance and Use | |||||||||||||||||||||||||||||||||||||||||
6.1 Tension tests, properly interpreted, provide information with regard to the tensile properties of rigid tubing, when employed under conditions approximating those under which the tests are made. It is possible that the tensile strength values will vary with the size of the tube and with the temperature and atmospheric conditions. Tension tests provide data potentially useful for research and development and for engineering design, and quality control purposes. |
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1. Scope | |||||||||||||||||||||||||||||||||||||||||
1.1 These test methods cover the testing of rigid tubes used in electrical insulation. These tubes include many types made from fibrous sheets of basic materials, such as cellulose, glass, or nylon, in the form of paper, woven fabrics, or mats, bonded together by natural or synthetic resins or by adhesives. Such tubes include vulcanized fiber and thermosetting laminates, as well as tubes made from cast, molded, or extruded natural or synthetic resins, with or without fillers or reinforcing materials. 1.2 Tubes tested by these test methods are most commonly circular in cross section; however, noncircular shapes are also in commercial use. To the extent that the individual methods are compatible with a particular noncircular shape, these test methods are applicable to these other shapes. For tests on noncircular tubes, appropriate comments shall be included in the test report, including details of orientation of test specimens with respect to the cross section of the tube. 1.3 The procedures appear in the following sections:
1.4 The values stated in inch-pound units are to be regarded as the standard. SI units 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.
Standard Test Methods of Measuring
Dimensions of Rigid Rods and Tubes Used for Electrical Insulation
(Withdrawn 2020) Standard Practices for Force Calibration
and Verification of Testing Machines Standard Test Method for Water Absorption
of Plastics Standard Test Methods for AC Loss
Characteristics and Permittivity (Dielectric Constant) of Solid
Electrical Insulation Standard Terminology Relating to
Electrical Insulation Standard Test Method for Dielectric
Breakdown Voltage and Dielectric Strength of Solid Electrical
Insulating Materials at Commercial Power Frequencies |
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