The IEC 60335-1: 2020 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements" standard formulated by the 61st Household Appliances Technical Committee of the /TC61 International Electrotechnical Commission has been officially released on September 2, 2020.
As a safety standard for household appliances, the update of this standard has always been the focus of attention of various home appliance companies. Compared with the IEC 60335-1:2010+A1:2013+A2:2016 (ed.5.2) standard, IEC 60335-1:2020 (ed.6.0) has more than 20 important technical changes. Therefore, the implementation of this standard will Home appliances on the market have a profound impact.
This paper introduces the development history and standard differences between IEC 60335-1 and GB 4706 standards, analyzes some important changes in the new version of the standard, and hopes to provide useful information to enterprises in product development and design.
Standard development history
The first edition of the IEC 60335-1 standard was published in 1970, and it has been 50 years since its publication. It is mainly a summary of two European standards (electric appliances and electric heating appliances). It is now the sixth edition. The content of the assessment has been gradually improved and its applicability has become wider and wider.
Although the 6th edition of IEC 60335-1 has been published, the preface states that "it can only be used when the special requirements standard clearly states that it is used in conjunction with IEC 60335-1 Ed6". Up to now, there are no special requirements standards used in conjunction with the IEC 60335-1 6th edition standard released, and it is expected that in the next two or three years, there will be continuous release of special requirements standards used in conjunction with it.
GB 4706.1 is the safety standard for household appliances in China, which is equivalent to the IEC 60335-1 standard. The current version is GB 4706.1-2005, which corresponds to IEC 60335-1:2004 (Ed 4.1), and the standard lags behind (see the figure below).
light radiation hazard
The safety of children's use of electrical appliances
The IEC 60335-1:2020 (Ed. 6.0) standard considers the safety of electrical appliances for children. Requiring only adults to use electrical products should also consider whether it can meet the "child safe use" situation.
For example, in the large oven in the kitchen, because the child was learning to walk and leaned against the wall, the door of the oven was scalded when he touched it.
The new version of the standard comprehensively tightens the requirements for product surface temperature rise, and companies may need to redesign the heat dissipation structure to reduce the temperature of non-working surfaces that children can touch.
The new standard on the safety of children's use of electrical appliances mainly includes Chapter 7 of the instruction manual, warnings about children's use of electrical products and playing with electrical products; Chapter 8 children's protection against electric shock when they reach out and touch electrical products; Chapter 11 Children touching electrical products Fever and temperature rise; Chapter 20 Children touching electrical products to prevent pinching of these chapters.
Input power and current measurement
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At present, many home appliances on the market are provided with appliance sockets and output sockets that can be used by users. Before the IEC 60335-1:2020 (Ed. 6.0) standard was released, there was no assessment content for appliances with such appliance sockets and sockets in the standard, which led to the neglect of the safety of such products in actual use.
Safety of battery appliances
The intelligence of home appliances is a major development trend. In order to ensure the safety of smart home appliances, the IEC 60335-1:2020 (Ed. 6.0) standard has revised the external communication requirements in Table R.1 and Table R.2. The impact of avoiding unauthorized access and transmission failures for telecommunication over public networks is introduced in Normative Appendix U Cybersecurity Requirements.
With the upgrading of home appliance products, the requirements and assessment of the standard will become more and more comprehensive. From the new points of the IEC 60335-1:2020 standard, it can be found that home appliance enterprises should pay attention to the newly added standard on the light radiation hazards of household appliances, children Safety of using household appliances, battery safety of household appliances, network security of household appliances, etc.
Domestic home appliance companies should not only consider the content of the current domestic mandatory national standard for home appliances GB 4706.1-2005 when designing products, but also understand the latest requirements of the IEC standard for household appliances to ensure product safety and meet people's needs for a better life.