前言这是CAN/CSA-E60730-2-4《家用和类似用途的自动电气控制-第2-4部分:密封和半密封型电机压缩机用电机热保护器的特殊要求》的第二版，该版本已被采用，但有加拿大的偏差，标题相同的IEC（国际电工委员会）标准60730-2-4（第二版，2006-10）。它取代了1994年出版的前一版CAN/CSA-E730-2-4（采用IEC 730-2-4:1990）。本标准拟与CAN/CSA-E60730-1:02《家用和类似用途的自动电气控制-第1部分:一般要求》（采用IEC 60730-1:1999，带加拿大偏差）一起使用。本标准被认为适用于本标准规定范围内的合格评定。范围除以下情况外，第1部分的本条款适用: 1.1更换:IEC 60730的本部分适用于IEC 60730-1中定义的密封（密封和半密封型）电机压缩机的电机热保护器的部分评估。热电机保护器是一种集成控制装置，取决于其在电机内或电机上的正确安装和固定，只能与相关电机一起进行全面测试。IEC 60335-2-34中给出了关于电机和热电机保护器组合测试的要求。本标准适用于使用NTC或PTC热敏电阻的电机压缩机的电机热保护器，其附加要求包含在附录J.1.1中。本标准适用于与设备安全相关的固有安全、操作值、操作时间和操作顺序，以及用于密封（密封和半密封）或其上的热电机保护器的测试- 密封型）电机压缩机。本标准适用于IEC 60335-2-34范围内电机压缩机的电机热保护器。在本标准中，“设备”一词是指“器具和设备”。非正常家用但公众可能使用的电机压缩机的热电机保护器，如商店、轻工业和农场中非专业人员使用的设备，均在本标准范围内。本标准不适用于专为工业应用设计的热电机保护器。1.1.2本标准不适用于其他电机保护方式。1.1.3本标准不适用于打开电路的手动装置。1.2更换:本标准适用于与额定电压等于或小于690 V、额定输出为11 kW或以下的电机一起使用的电机热保护器。 符合本标准要求的控制装置被视为符合IEC 60730-2-21的要求）。1.3更换:如果响应值取决于在设备中安装控件的方法，则本标准不考虑控件自动动作的响应值。如果响应值对保护用户或周围环境具有重要意义，则适用适当家用设备标准中定义的值或制造商确定的值。

PrefaceThis is the second edition of CAN/CSA-E60730-2-4, Automatic electrical controls for household and similar use - Part 2-4: Particular requirements for thermal motor protectors for motor-compressors of hermetic and semi-hermetic type, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 60730-2-4 (second edition, 2006-10). It supersedes the previous edition published in 1994 as CAN/CSA-E730-2-4 (adopted IEC 730-2-4:1990). This Standard is intended to be used in conjunction with CAN/CSA-E60730-1:02, Automatic electrical controls for household and similar use - Part 1: General requirements (adopted IEC 60730-1:1999, with Canadian deviations). This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.ScopeThis clause of Part 1 is applicable except as follows: 1.1 Replacement: This part of IEC 60730 applies to the partial evaluation of thermal motor protectors as defined in IEC 60730-1 for sealed (hermetic and semi-hermetic type) motor-compressors. A thermal motor protector is an integrated control which is dependent on its correct mounting and fixing in or on a motor and which can only be fully tested in combination with the relevant motor. Requirements concerning the testing of the combination of motor and thermal motor protectors are given in IEC 60335-2-34. This standard applies to thermal motor protectors for motor compressors using NTC or PTC thermistors, additional requirements for which are contained in Annex J. 1.1.1 This standard applies to the inherent safety, to the operating values, operating times, and operating sequences, where such are associated with equipment safety, and to the testing of thermal motor protectors used in or on sealed (hermetic and semi-hermetic type) motor-compressors. This standard applies to thermal motor protectors for motor-compressors within the scope of IEC 60335-2-34. Throughout this standard the word "equipment" means "appliance and equipment". Thermal motor protectors for motor compressors not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. This standard does not apply to thermal motor protectors designed exclusively for industrial applications. 1.1.2 This standard does not apply to other means of motor protection. 1.1.3 This standard does not apply to a manual device for opening the circuit. 1.2 Replacement: This standard applies to thermal motor protectors for use with electric motors with a rated voltage equal to or less than 690 V and a rated output of 11 kW or less. Controls complying with the requirements of this standard are considered to comply with the requirements of IEC 60730-2-21). 1.3 Replacement: This standard does not take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate household equipment standard or as determined by the manufacturer applies.