IEC 60335-2-42:2021作为IEC 60335-2-42:2021 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60335-2-42:2021涉及电动商用强制对流烤箱、蒸汽炊具、蒸汽对流烤箱以及（不包括任何其他用途）蒸汽发生器的安全，其额定电压对于连接在一相和中性线之间的单相电器不超过250 V，对于其他电器不超过480 V。这些电器不用于家用和类似用途。它们用于不对公众开放的区域的食品商业加工，例如在餐馆、食堂、医院的厨房和商业企业如面包店和肉店。本标准也适用于船舶上使用的电动商用强制对流烤箱、蒸汽炊具、蒸汽对流烤箱，附件AA适用于这些烤箱。 利用其他形式能量的电器的电气部分也在本标准的范围内。在可行的情况下，本标准涉及这些类型的器具带来的常见危害。提请注意以下事实: -对于拟用于车辆或船舶或飞机上的器具，可能需要附加要求； -在许多国家，国家卫生当局、负责保护劳工的国家当局、国家供水当局和类似当局规定了额外的要求；-在许多国家，对压力器具规定了额外的要求。 本标准不适用于: -专为工业用途而设计的器具； -拟在有特殊条件的地方使用的器具，例如存在腐蚀性或爆炸性气氛（灰尘、蒸汽或气体）； -连续大规模生产食品的器具； -微波炉(IEC 60335-2-90)； -电池供电的电器。 本第六版取消并取代2002年出版的第五版、修正案1:20 08和修正案2:20 17。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)文本已与IEC 60335-1:20 20保持一致； b)一些注释被转换为规范性文本、修改或删除（第1、7条）。15,9.101,10.1,11.7,19.2,19.7,20.101,21.101,22.101,22.114,27.2,30.101); c)排除电池供电的电器和在向公众开放的区域使用的电器（第1条）； d)澄清外行使用的器具的适用标准（第1、7.12条）； e)将清洁说明从7.12.1重新定位到7.12； f)对一些试验质量标准进行了澄清（15.1.1、15.2、19.2、19.7、23.3、25.3）； g)引入符号以指示烫伤风险(7.6)； h)IEC 60335-2-42文本与IEC TC 61/MT 32下的其他标准的协调。 本第2部分应与最新版本的IEC 60335-1及其修订一起使用，除非该版本排除了本第2部分；在这种情况下，使用不排除它的最新版本。它是在该标准第六版（2020年）的基础上建立的。

IEC 60335-2-42:2021 is available as IEC 60335-2-42:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60335-2-42:2021 deals with the safety of electrically operated commercial forced convection ovens, steam cookers, steam-convection ovens and, exclusive of any other use, steam generators, 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. These appliances are not intended for household and similar purposes. They are used for commercial processing of food in areas not open to the public, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries and butcheries. This standard deals also with electrically operated commercial forced convection ovens, steam cookers, steam-convection ovens intended for use on board ships, for which informative Annex AA is applicable.
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 aircrafts, 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;
- microwave ovens (IEC 60335-2-90);
- battery-operated appliances.
This sixth edition cancels and replaces the fifth 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) some notes have been converted to normative text, modified or deleted (Clause 1, 7.15, 9.101, 10.1, 11.7, 19.2, 19.7, 20.101, 21.101, 22.101, 22.114, 27.2, 30.101);
c) exclusion of battery-operated appliances and appliances used in areas open to the public (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) clarifications to some test specifications have been made (15.1.1, 15.2, 19.2, 19.7, 23.3, 25.3);
g) introduction of a symbol to indicate risk of scalding (7.6);
h) conciliation of the text of IEC 60335-2-42 with other standards under IEC TC 61/MT 32.
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.