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Standard Test Method for Thermal Endurance of Electrical Insulating Varnishes by the Helical Coil Method
Automaticky preložený názov:
Štandardná skúšobná metóda pre tepelnú odolnosť elektrotechnikov impregnačným u špirálovité cievky metódy
NORMA vydaná dňa 1.11.2013
Označenie normy: ASTM D3145-13
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.11.2013
Kód tovaru: NS-22616
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
electrical insulating, helical coil, magnet wire, thermal endurance, varnish, ICS Number Code 29.035.60 (Varnished fabrics)
Significance and Use | ||||||||||||||||
5.1 This test method is used to determine the effect of exposure to elevated temperatures on the bond strength of combinations of magnet wire insulations and electrical insulating varnishes. The results are used as a guide for the comparison and selection of varnishes and combinations of varnishes and magnet wire insulation for specific applications. Test Methods D1932 and D3251describe additional tests for determining the thermal endurance of insulating varnishes. A comprehensive evaluation of thermal characteristics includes a comparison of the thermal endurance determined in these different ways. 5.2 This test method is useful for research and product qualifications purposes. |
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1. Scope | ||||||||||||||||
1.1 This test method covers the determination of the thermal endurance of electrical insulating varnishes alone or in combinations with magnet wire insulation. Changes in the helical coil bond strength are used as the test criteria. The coils are made from bare aluminum or copper wire, or from film- or fiber-insulated magnet wire. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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.
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Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
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IEC 60216-1
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Guide for the Determination of Thermal Endurance Properties of Electrical Insulation Materials (Part 1)
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Standard Test Method for Thermal Endurance Characteristics of Electrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire
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Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test (Includes all amendments and changes 11/14/2019).
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Standard Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire
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Standard Test Method for Thermal Endurance of Flexible Electrical Insulating Varnishes
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Standard Practice for Conditioning Plastics for Testing
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Standard Terminology Relating to Electrical Insulation |
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