IEC 60335-2-73:2024 家用和类似用途电器.安全.第2-73部分:固定浸入式加热器的特殊要求

标准编号：IEC 60335-2-73:2024

中文名称：家用和类似用途电器.安全.第2-73部分:固定浸入式加热器的特殊要求

英文名称：Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters

发布日期：2024-03-14

标准范围

IEC 60335-2-73:2024涉及家用和类似用途的固定浸入式电加热器的安全性，这些加热器旨在安装在向大气开放的水箱中，以将水加热到低于其沸点的温度，额定电压单相电器不超过250 V，其他电器（包括直流（DC）供电的电器）不超过480 V。水箱可以具有用于加热水的替代装置，例如从单独的锅炉供应的热水的循环。额定功率输入高达25 kW的浸入式加热器作为中央供暖锅炉的替代热源也在本标准的范围内。不打算用于正常家庭使用但可能对公众造成危险的电器，如打算供非专业人员在商店、轻工业和农场使用的电器，属于本标准的范围。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、感官或精神能力受损的人（包括儿童）；或缺乏经验和知识使他们无法在没有监督或指导的情况下安全使用器具；-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、负责劳动保护的国家当局、国家供水当局和类似当局规定了额外的要求。本标准不适用于专门用于工业目的的器具；-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）；-结合在诸如用于加热液体的器具(IEC 60335-2-15)、储水式热水器(IEC 60335-2-21)和即热式热水器(IEC 60335-2-35)的器具中的加热元件；-水族箱加热器(IEC 60335-2-55)；-便携式浸没式加热器(IEC 60335-2-74)；-发动机预热器，例如用于汽车和公共汽车的发动机预热器。本第三版取消并取代了2002年出版的第二版、修正案1:20 06和修正案2:20 09。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)一些注释已转换为规范性文本（第1、19.2条）；c)增加外部可接近的表面温度(条款11)；本第2部分应与最新版本的IEC 60335-1:20 20及其修订结合使用，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 60335-2-73:2024 deals with the safety of fixed electric immersion heaters for household and similar purposes that are intended for installation in a water tank open to the atmosphere for heating water to a temperature below its boiling point with a rated voltage of not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances. The water tank can have alternative means for heating water, such as the circulation of hot water supplied from a separate boiler. Immersion heaters having a rated power input up to 25 kW for incorporation as an alternative heating source in central heating boilers are also within the scope of this standard. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laypersons in shops, in light industry and on farms, are within the scope of this standard.
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, the national water supply authorities and similar authorities.
This standard does not apply to
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);
- heating elements incorporated in appliances such as appliances for heating liquids (IEC 60335-2-15), storage water heaters (IEC 60335-2-21) and instantaneous water heaters (IEC 60335-2-35);
- aquarium heaters (IEC 60335-2-55);
- portable immersion heaters (IEC 60335-2-74);
- engine preheaters such as those for cars and buses.
This third edition cancels and replaces the second edition published in 2002, Amendment 1: 2006 and Amendment 2: 2009. 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, 19.2);
c) addition of external accessible surface temperatures (Clause 11);
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1:2020 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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