序言这是CSA C22的第五版。2台47号风冷变压器（干式）。它是CSA集团根据《加拿大电气规范》第二部分发布的一系列标准之一。它取代了1990年、1977年、1961年和1940年出版的早期版本，并以SI（公制）单位书写。有关《加拿大电气规范》第二部分标准的一般信息，请参见CAN/CSA-C22的前言。2号，0号。本版本主要用于纳入CSA TIL No.I-28（K系数评级），更新范围以澄清本标准未涵盖的产品，澄清标记要求，澄清开口和外壳要求，并更新参考出版物。范围1。1本标准适用于向电力、供暖和照明电路供电的干式单相和多相变压器，其设计安装和使用符合加拿大电气规范第一部分。 1.2本标准适用于额定72.5 kV及以下的多绕组和自耦变压器。1.3本标准适用于在非危险室内和室外场所使用的变压器。1.4本标准不适用于专用变压器、发光管标志变压器、油或气体燃烧器点火、冷阴极室内照明或电子或充液设计。1.5本标准不包括能效或产品性能要求。有关此类要求，请参见CAN/CSA-C802。2或CSA C9（如适用）。1.6 CAN/CSA-C22中提供了适用于本标准的一般要求。2号，0号。1.7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 C22.2 No. 47, Air-cooled transformers (dry type). It is one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes previous editions published in 1990, 1977, 1961, and 1940, and it is written in SI (metric) units. For general information on the Standards of the Canadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0. This edition mainly serves to incorporate CSA TIL No. I-28 (K-factor ratings), update the scope to clarify the products not covered by this standard, clarify marking requirements, clarify openings and enclosures requirements, and update the reference publications.Scope1.1 This Standard applies to single-phase and polyphase transformers of the dry type for supplying energy to power, heating, and lighting circuits and designed to be installed and used in accordance with the Canadian Electrical Code, Part I. 1.2 This Standard applies to multiwinding and autotransformers rated 72.5 kV class and less. 1.3 This Standard applies to transformers for use in nonhazardous indoor and outdoor locations. 1.4 This Standard does not apply to specialty transformers, transformers for luminous-tube signs, oil or gas burner ignition, cold-cathode interior lighting, or electronic or liquid-filled designs. 1.5 This Standard does not include energy efficiency or product performance requirements. For such requirements, see CAN/CSA-C802.2 or CSA C9 where applicable. 1.6 General requirements applicable to this Standard are provided in CAN/CSA-C22.2 No. 0. 1.7 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.