序言这是CSA C22的第四版。2第120号，制冷设备，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1991年出版的前一版。有关加拿大电气规范第二部分标准的一般信息，请参阅最新版CAN/CSA-C22的前言。2第0号，一般要求——加拿大电气规范，第二部分。范围1。1本标准适用于自给式和远程制冷设备，按照《加拿大电气规范》第一部分的规定安装和使用，用于商业和商业机构的室内或室外非危险场所。1.2本标准还适用于额定值不超过250V、分支电路保护额定值不超过60A的独立式、线缆连接设备，以及额定值为600V及以下的永久性连接设备- 相位或三相。1.3本标准适用于商业和商业机构中使用的制冷设备，包括制冷系统，但不包括使用制冷电机压缩机和风冷和水冷冷凝器的制冷系统，如热电或吸收系统。1.4本标准适用于。冷藏设备，如陈列柜、肉类、乳制品或冷冻食品箱、橱柜内的把手和瓶式饮料冷却器；b、 自助式或照明式冰箱、冰柜和冰淇淋柜；c、 步入式冷却器；d、 设计为作为制冷系统一部分现场安装的设备，如远程展示柜和单元冷却器；e、 设计用于对食品或饮料混合物进行一定程度冷冻并在销售时从设备中随意分配的设备，如冰淇淋机； f、 压力、瓶子或使用点类型的水冷却器，独立式或壁挂式，具有加热水或冷藏空间等附加功能；g、 用于商业场所的冷冻饮料分配器，设计用于独立使用或用于固定装置；h、 农用生牛奶冷却器，永久连接，散装直接膨胀冰组类型，具有独立或远程冷凝装置；i、 以立方体、薄片或其他易于使用的形式制造和收获冰的制冰机，可能包括也可能不包括冰储存装置；注:本标准不适用于家用冰箱和冷冻机的附件自动制冰机。j、 制冷机组；k、 用于制冷系统的制冷剂回收和再循环设备； l、 制冷剂液体泵；m、 用作冷藏室或冷藏柜一部分的门和框架组件；和 与制冷设备一起使用的其他设备，如碳酸饮料机（用于饮料分配器）、制冰机（用于制冰机）和非制冷展示柜。1.5本标准包括对设备电气特性的要求，考虑到有管辖权的当局可能要求的卫生程序的影响，以及设备的功能操作，以及对制冷系统、水加热装置、碳化设备、分配设备的机械安全的要求，和门框组件。1.6本标准不适用于压缩机组、冷凝机组和CSA C22范围内的其他设备。 2个编号236或CAN/CSA-C22。2编号60335-2-40.1.7 CAN/CSA-C22中规定了适用于本标准的一般要求。2第0号，一般要求加拿大电气规范，第二部分。1.8在CSA集团标准中，“应”用于表示要求，即用户有义务满足的条款，以符合标准；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一种选择或在标准范围内允许的选择；“can”用来表示可能性或能力。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。1.9本出版物中以SI（公制）单位给出的数值为标准值。括号中给出的值仅供参考。

PrefaceThis is the fourth edition of CSA C22.2 No. 120, Refrigeration equipment, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes the previous edition published in 1991.For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of the latest edition of CAN/CSA-C22.2 No. 0, General Requirements - Canadian Electrical Code, Part II.Scope1.1This Standard applies to self-contained and remote refrigeration equipment, designed to be installed and used in accordance with the Canadian Electrical Code, Part I, for use in non-hazardous locations indoors or outdoors in commercial and business establishments.1.2This Standard also applies to self-contained, cord-connected equipment rated at not more than 250V with branch circuit protection rated at not more than 60A, and equipment intended for permanent connection rated at 600V and less, single-phase or three-phase.1.3This Standard applies to refrigerated equipment used in commercial and business establishments that include refrigeration systems other than those that employ refrigerant motor-compressors and air- and water-cooled condensers, such as thermo-electric or absorption systems.1.4This Standard applies toa. refrigerated equipment such as display cases, meat, dairy, or frozen food cases, reach-in cabinets, and bottle type beverage coolers;b. self-service or illuminated refrigerators, freezers, and ice cream cabinets;c. walk-in coolers;d. equipment designed to be field-installed as part of a refrigeration system, such as remote display cases and unit coolers;e. equipment designed to produce some degree of freezing of food or beverage mixtures and to dispense them at will from the equipment at the time of sale, such as ice cream makers;f. water coolers, pressure, bottle, or point-of-use type, free-standing or wall-mounted, having added features such as a means for heating water, or a refrigerated space;g. refrigerated beverage dispensers for use in commercial establishments, designed for free-standing use or for building into fixtures;h. coolers for raw milk intended for farm use, permanently-connected, of the bulk direct expansion ice bank type, having either a self-contained or remote condensing unit;i. ice makers that manufacture and harvest ice in cube, flake, or other readily usable form and that may or may not incorporate ice storage means;Note: This Standard does not apply to automatic ice-makers that are accessory components in household refrigerators and freezers.j. refrigeration units;k. refrigerant recovery and recycling equipment intended for use with refrigeration systems;l. refrigerant liquid pumps;m. door and frame assemblies used as part of a refrigerated room or cabinet; and other equipment used in conjunction with refrigerated equipment, such as carbonators (for use with beverage dispensers), ice dispensers (for use with ice making machines), and non-refrigerated display cases.1.5This Standard includes requirements for the electrical features of equipment, with consideration given to the effects of sanitation procedures that may be required by authorities having jurisdiction, as well as the functional operation of the equipment, and requirements for the mechanical safety of refrigerating systems, water heating means, carbonating equipment, dispensing equipment, and door frame assemblies.1.6This Standard does not apply to compressor units, condensing units, and other equipment that is within the scope of CSA C22.2 No. 236 or CAN/CSA-C22.2 No. 60335-2-40.1.7General requirements applicable to this Standard are specified in CAN/CSA-C22.2 No. 0, General requirements-Canadian Electrical Code, Part II.1.8In CSA Group 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; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability.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.1.9The values given throughout this publication in SI (metric) units are the standard. The values given in parentheses are for information only.