序言这是CSA C9干式变压器的第五版。它取代了2002年、1981年、1977年和1966年出版的之前版本。本版本的变化包括:a）绝缘电压等级和介电测试的更新；b） 更新附件D（室内和室外非危险场所外壳的比较）；c）使平均可听声级与当前行业惯例保持一致。范围1。1本标准适用于单相和多相干燥- 在第7.2条和第7.3条规定的电气额定值范围内，并按照附录A和B规定的干式变压器使用条件使用的型式变压器，包括带有铸造或树脂封装线圈的变压器。注:1）有关干式变压器负载的信息，见IEEE C57。96.2）根据加拿大电气规范第二部分，干式变压器的附加要求见CSA C22。 2号47。1.2本标准涉及额定电压、千伏安容量、其他电气特性、某些机械特性和试验程序的标准化。1.3本标准不适用于仅为测试目的设计的变压器、整流变压器、焊接变压器、熔炉变压器、仪表变压器、电机启动自耦变压器或任何其他特殊用途的变压器。1.4在本标准中，“变压器”一词是指干式变压器- 类型变压器，除非另有特别说明。1.5在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求； 随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。

PrefaceThis is the fifth edition of CSA C9, Dry-type transformers. It supersedes the previous editions published in 2002, 1981, 1977, and 1966. Changes in this edition include the following: a) updates to insulation voltage classes and dielectric tests; b) updates to Annex D (Comparison of enclosures for indoor and outdoor non-hazardous locations); and c) alignment of average audible sound level with current industry practices.Scope1.1 This Standard applies to single phase and polyphase dry-type transformers, including those with cast or resin encapsulated coils, that are within the limits of the electrical ratings specified in Clauses 7.2 and 7.3, and that are intended for use in accordance with the service conditions for dry-type transformers specified in Annexes A and B. Notes: 1) For information on the loading of dry-type transformers, see IEEE C57.96. 2) For additional requirements for dry-type transformers in accordance with the Canadian Electrical Code, Part II, see CSA C22.2 No. 47. 1.2 This Standard deals with the standardization of voltage ratings, kVA capacities, other electrical features, certain mechanical features, and test procedures. 1.3 This Standard does not apply to transformers designed solely for test purposes, rectifier transformers, welding transformers, furnace transformers, instrument transformers, motor-starting autotransformers, or any other special purpose transformers. 1.4 In this Standard, the word "transformer" refers to a dry-type transformer, unless otherwise specifically stated. 1.5 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.