ASTM D1933作为电绝缘材料的氮气的标准规范
日期:2012-02-10 10:24
that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 This specification covers three types of nitrogen used as an electrical insulating material in electrical equipment:
1.1.1 Type I, obtained from the air by liquefaction processes and dried,
1.1.2 Type II, obtained from the air by liquefaction processes, deoxidized with hydrogen over a platinum catalyst, and dried, and
1.1.3 Type III, obtained from the air by liquefaction processes and if necessary deoxidized
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