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现行 IEC 60335-2-21:2022 CMV
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Household and similar electrical appliances - Safety - Part 2-21: Particular requirements for storage water heaters 家用和类似用途电器.安全.第2-21部分:储水式热水器的特殊要求
发布日期: 2022-10-18
IEC 60335-2-21:20 22 CMV包含官方标准及其注释版本。注释版本为您提供了一种快速简单的方法来比较IEC 60335-2-21:20 22版7.0和之前的IEC 60335-2-21:20 2+AMD1:2018 CSV版6.1之间的所有更改。此外,还提供了IEC TC 61专家的意见,以解释最相关变更的原因。 IEC 60335-2-21:20 22涉及家用和类似用途的储水式热水器的安全性,其额定电压对于单相电器不超过250 V,对于其他电器,包括直流(DC)供电的电器和电池供电的电器,其额定电压不超过480 V。 本标准还涉及: -不打算供正常家庭使用但可能对公众构成危险的电器,例如打算供门外汉在商店和农场使用的电器;-浸没式加热器单元,其旨在在热交换封闭式热水器中进行改装,该热交换封闭式热水器具有用于改装的装置。附加要求见附件AA。 在可行的情况下,本标准涉及家庭内外所有人都会遇到的电器带来的常见危险。然而,一般来说,它没有考虑到 -身体、感官或精神能力或缺乏经验和知识使其无法在没有监督或指导的情况下安全使用器具的人员(包括儿童); -儿童在玩电器。 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和类似当局规定了额外的要求;-许多国家都有关于安装与水管相连的设备的规定。 本标准不适用于 -用于烧水的器具(IEC 60335-2-15); -即热式热水器(IEC 60335-2-35); -商业分配器具和自动售货机(IEC 60335-2-75); -专供工业用途的器具; -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环境(灰尘、蒸汽或气体)。 本第七版取消并取代2012年出版的第六版和修正案1:20 18。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)文本已符合IEC 60335-1:2020; b)一些注释已转换为规范性文本(第1、5.2、15.3、19.1、19.2、19.3、19.4、22.47、22.104、22.110条,附件AA导言); c)更新了限制使用器具入口的要求(25.1)。 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 60335-2-21:2022 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60335-2-21:2022 edition 7.0 and the previous IEC 60335-2-21:2012+AMD1:2018 CSV edition 6.1. Futhermore, comments from IEC TC 61 experts are provided to explain the reasons of the most relevant changes.

IEC 60335-2-21:2022 deals with the safety of electric storage water heaters for household and similar purposes and intended for heating water below boiling temperature, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances and battery-operated appliances.
This standard also deals with:
– appliances not intended for normal household use, but which nevertheless possibly pose a source of danger to the public, such as appliances intended to be used by laymen in shops and on farms;
– immersion heater units intended to be retrofitted in a heat exchange closed water heater having provision for retrofitting. Additional requirements are given in Annex AA.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
– persons (including children) whose physical, sensory or mental capabilities, or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
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 and similar authorities;
– in many countries regulations exist for the installation of equipment connected to the water mains.
This standard does not apply to
– appliances for boiling water (IEC 60335-2-15);
– instantaneous water heaters (IEC 60335-2-35);
– commercial dispensing appliances and vending machines (IEC 60335-2-75);
– appliances intended 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).
This seventh edition cancels and replaces the sixth edition published in 2012 and Amendment 1:2018. 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 (Clause 1, 5.2, 15.3, 19.1, 19.2, 19.3, 19.4, 22.47, 22.104, 22.110, Annex AA introduction);
c) updated requirement restricting use of appliance inlets (25.1).
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.
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归口单位: TC 61
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