范围1.1本标准规定了安装在工业、商业或住宅场所的荧光灯具中使用的荧光灯镇流器效能的测试程序和性能要求。1.2本标准适用于以60 Hz线路频率运行的镇流器。1.3本标准涵盖表1A中规定的荧光灯类型的镇流器。注:1）本标准未定义镇流器系数（BF）测量过程，因为本标准未使用BF来定义产品类别。BF说明见附录A。2） 本标准未规定镇流器的安全要求。 这些要求在CAN/CSA-C22.2 No.74.3）中规定。本标准未涵盖的荧光灯和镇流器组合可能包含在本标准的未来版本中。1.4本标准不包括以下荧光灯镇流器:a）通过集成调光能力可将荧光灯输出降低50%或以上的镇流器；b） 低频T8镇流器，设计、标记和销售用于EMI敏感环境，并以10个或更少的包装出售；andc）编程启动（PS）镇流器，用于操作荧光灯，通常称为4 ft-MBP T8灯，每个灯的平均电流小于140 mA。 1.5在CSA标准中，“应”用于表示要求，即用户有义务满足的规定，以符合标准；“宜”用于表示建议或建议但不需要的建议；“may”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；随附条款的注释旨在与文本中的解释性或信息性材料分开。表和图的注释被视为表或图的一部分，可以作为要求编写。 附录被指定为规范性（强制性）或信息性（非强制性）以定义其应用。1.6国际单位制给出的数值是本标准中的记录单位。括号中给出的值仅供参考和比较。

Scope1.1This Standard specifies test procedures and performance requirements for the efficacy of fluorescent lamp ballasts for use in fluorescent luminaires to be installed in industrial, commercial, or residential locations.1.2This Standard applies to ballasts intended to operate at a line frequency of 60 Hz.1.3This Standard covers ballasts for the types of fluorescent lamp specified in Table 1A.Notes:1) This Standard does not define the ballast factor (BF) measurement process because the Standard does not use BF to define product classes. See Annex A for a description of BF.2) This Standard does not specify requirements for safety of ballasts. These requirements are specified in CAN/CSA-C22.2 No. 74.3) It is possible that fluorescent lamp and ballast combinations not covered by this Standard will be included in a future edition of this Standard.1.4The following fluorescent lamp ballasts are excluded from this Standard:a) a ballast that, by means of an integrated dimming capability, can reduce the output of the fluorescent lamp by 50% or more;b) low frequency T8 ballasts that are designed, labelled, and marketed for use in EMI-sensitive environments and sold in packages of 10 or fewer; andc) programmed start (PS) ballasts that operate fluorescent lamps commonly referred to as 4 ft MBP T8 lamps and deliver on average less than 140 mA to each lamp.1.5In CSA standards, "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.1.6The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.