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Standard Test Method for Weight Loss of Solventless Varnishes
NORMA vydaná dňa 1.11.2018
Označenie normy: ASTM D3377-04(2018)
Dátum vydania normy: 1.11.2018
Kód tovaru: NS-904517
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
solventless varnish, varnish, weight loss ,, ICS Number Code 29.035.60 (Varnished fabrics)
Significance and Use | ||||||
4.1 The amount and composition of by-products produced by exposure of insulating varnishes to elevated temperatures can possibly: 4.1.1 Deteriorate other insulations in the system, 4.1.2 Cause cracking of insulation due to pressure, buildup in thick cross sections, or 4.1.3 Corrode other parts in the assembly. 4.2 Amount and rate of weight loss will possibly affect the thermal rating of a varnish. |
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1. Scope | ||||||
1.1 This test method covers the determination of the percent weight loss of cured solventless electrical varnishes when exposed to elevated temperatures for prescribed periods of time. 1.2 Results of this test method are based on 6-mm (1/4-in.) thick specimens and will not be applicable to specimens appreciably thinner or thicker than 6 mm. 1.3 The values stated in SI units are to be regarded as the standard. 1.4 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. Note 1: This standard resembles IEC 60216–2 “Guide for the
determination of thermal endurance properties of electrical
insulating materials. Part 2: Choice of test criteria” in a number
of ways, but is not consistently similar throughout. The data
obtained using either standard will possibly be technically
equivalent.
1.5 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. |
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2. Referenced Documents | ||||||
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