1.1 本规范涵盖三种用作电气设备电气绝缘材料的氮气: 1.1.1 第一类， 通过液化过程从空气中获得并干燥， 1.1.2 II型， 通过液化过程从空气中获得，在铂催化剂上用氢还原，并干燥，以及 1.1.3 III型， 通过液化过程从空气中获得，必要时通过适当的方式进行脱氧。 注1: 金属容器装满符合本规范的材料并不排除材料可能被未列出的杂质污染的可能性。 1.2 以下安全隐患警告仅适用于试验方法部分第节 5. ，本规范: 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

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 by suitable means. Note 1: The fact that metal containers are filled with materials meeting this specification does not exclude the possibility that the materials might become contaminated with unlisted impurities. 1.2 The following safety hazards caveat pertains only to the test method portion, Section 5 , of this specification: 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.