家用和类似用途电器 安全 第2-49部分 商用电器的特殊要求 食物和陶器保温器具

[中文适用范围]： 本部分IEC 60335涉及电动商用器具的安全，用于保持食物和餐具的温度，其额定电压不超过单相器具（连接在一相和中性线之间）250V，其他器具480V。 本标准范围内的器具示例包括： - 带或不带加热顶部的热柜； - 加热顶部； - 加热展示柜； - 加热餐具分配器； - 加热桌子； - 辐射加热器。 这些器具不适用于家庭和类似用途，而是用于商业用途，如食品加工，也可在公共场所使用，例如餐厅厨房、食堂、医院以及商业企业（如面包店和肉店）。 本标准也适用于使用其他形式能源的器具的电气部分。 本标准尽可能处理这些类型器具带来的常见危险。 注意： - 用于车辆、船舶或飞机的器具可能需要额外要求； - 在许多国家，国家卫生部门、国家劳动保护部门、国家供水部门等可能规定额外要求； - 在许多国家，压力器具可能需要额外要求。 本标准不适用于： - 专为工业用途设计的器具； - 用于特殊环境（如腐蚀性或爆炸性环境）的器具； - 用于食品连续大规模生产的器具； - 商用电动水浴锅（IEC 60335-2-50）； - 电池供电的器具； - 家用暖盘和类似器具（IEC 60335-2-12）用于以下环境： - 商店、办公室和其他工作环境的员工厨房区域； - 农舍； - 酒店、汽车旅馆和其他住宅环境； - 住宿加早餐类型的环境。 [外文原描述]： IEC 60335-2-49:2021 deals with the safety of electrically operated commercial appliances for keeping food and crockery warm, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral, and 480 V for other appliances. Examples of appliances that are within the scope of this standard are: – hot cupboards, with or without heated tops; – heated tops; – heated display cases; – heated crockery dispensers; – heated tables; – radiant heaters. These appliances are not intended for household and similar purposes. They are used for commercial purposes, processing of food, also in areas open to the public, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises, such as bakeries and butcheries. The electrical part of appliances making use of other forms of energy is also within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by these types of appliances. Attention is drawn to the fact that: – for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary; – in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities; – in many countries, additional requirements are specified for pressure appliances. This standard does not apply to: – appliances designed exclusively for industrial purposes; – appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas); – appliances for continuous mass production of food; – commercial electric bains-marie (IEC 60335-2-50); – battery-operated appliances; – warming plates and similar appliances for household use covered by IEC 60335-2-12 used in the following environments by laymen: staff kitchen areas in shops, offices and other working environments, farm houses, hotels, motels and other residential type environments, bed and breakfast type environments. This fifth edition cancels and replaces the fourth edition published in 2002, Amendment 1:2008 and Amendment 2:2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the text has been aligned with IEC 60335-1:2020; b) introduction of requirements for appliances intended for use in areas open to the public, including external accessible surface temperatures (Clause 1, 7.12, 11.8, Table 102); c) exclusion of battery-operated appliances (Clause 1); d) clarification of applicable standard for appliances for use by laymen (Clause 1, 7.12); e) relocation of cleaning instructions from 7.12.1 to 7.12; f) relocation of 24.101 to 22.106; g) conciliation of the text of IEC 60335-2-49 with other standards under IEC/TC61/MT32; h) some notes have been converted to normative text, modified or deleted (Clause 1, 7.1, 7.15, 11.3, 11.7, 15.2, 19.2, 22.101, 23.3); i) additional requirements for measurement of input current; j) clarification of the testing procedure in 15.1.1; k) clarification of the test conditions in 20.1 and 23.3; l) clarifications of the requirements in 25.3. This Part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments unless that edition precludes it; in that case, the latest edition that does not preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.