ASTM D876电绝缘用非硬质聚氯乙烯管的标准试验方法

ASTM D876电绝缘用非硬质聚氯乙烯管的标准试验方法
ASTM D876 Standard Test Methods for Nonrigid Vinyl Chloride Polymer Tubing Used for Electrical Insulation.

Scope：1.1 These test methods cover the testing of general-purpose (Grade A), low-temperature (Grade B), and high-temperature (Grade C) nonrigid vinyl chloride polymer tubing, or its copolymers with other materials, for use as electrical insulation. For the purpose of these test methods nonrigid tubing shall be tubing having an initial elongation in excess of 100 % at break. Note 1—These test methods are similar but not identical to those in IEC 60684–2. 1.2 The values stated in inch-pound units are to be regarded as standard, except for temperature, which shall be expressed in degrees Celsius. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The procedures appear in the following sections: Procedure SectionASTM Reference Standard Brittleness Temperature43-45 D746 Corrosion Tests74-85 D1000 Dielectric Breakdown Voltage at High Humidity65-73E104 Dielectric Breakdown Volta.

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 来源：防火网　发布时间：11/25/2013 点击次数：2400