2022年1月31日，IEC照明电器技术委员会和小组委员会(TC/SC 34D)颁布了灯串安全标准IEC60598-2-20:2022，该标准规定了电源电压不超过250V、用于室内或室外的，串联或并联以及串联/并联连接电光源组合的灯串的安全要求。
The new edition of safety standard for lighting chains,IEC 60598-2-20:2022 published at 31 January 2022 by technicalcommittees and subcommittees (TC/SC 34D). It specifies re lighting chains fitted with series, parallel ora combination of series/parallel connected light sources foruse either indoors or outdoors on supply voltages notexceeding 250 V.
以下表格是本次更新的技术条款纲要，请联系实验室获得技术细节的解读。
Table beloware the outline of the technical changes, please don’t feelhesitate to contact our lab to get the technical interpretation ofthe details.
相较上一版本的技术变更包括：
significanttechnical changes with respect to the previous editioninclude:
序号number | 旧标准（IEC60598-2-20:2014） Previous edition | 变更（IEC60598-2-20:2022） technicalchange in newedition |
1 | 无 Nothing | 在20.7和20.11章新增临时安装受保护型灯串（TPL）的特定要求 1) 临时安装的受保护型灯串(TPL)应符合IEC60598-1:2020中定义的恶劣条件使用的灯具的要求； 2) 用于临时安装的受保护型灯串(TPL)的插头及插座应符合IEC60309-1标准要求； 3) 修订表1的电线类型及随后的线径要求，增加临时安装的受保护型灯串(TPL)外部电线的特定规格和线径要求 Inclusion ofspecific provisions for temporarily installed protected lighting(TPL) chains 1) Temporarilyinstalled protected lighting (TPL) chains shall comply with there for rough service luminaires as defined in Part1. 2) Plugsand socket-outlets used with temporarily installed protectedlighting (TPL) chains shall conform to IEC 60309-1. 3) Amendthe re of cable specification and nominal cross-sectionalarea of the conductors, add specification for cable of Temporarilyinstalled protected lighting (TPL) chains |
2 | 增加电子控制单元的外壳应满足IEC60598-1:2020的机械冲击要求，仅用于室内使用的产品，其冲击能量为0.5Nm，其它产品，其冲击能量应为0.7 Nm； Add re the enclosure of electronic control units, it shall meet themechanical impact re of Part1 using an impact energy of 0,7 Nm unless marked for indoor useonly, where an impact energyof 0,5 Nm is applied. | |
3 | 在20.3章新增术语和定义 带分断容量的连接器（CBC）、**安装的灯串、临时安装的灯串、临时安装的受保护的灯串(TPL) Addition ofterms and definitions connector withbreaking capacity, permanentlyinstalled lighting chain, temporarily installed lighting chain,temporarily installed protected lighting (TPL) chain | |
4 | 新增灯串的图示 Inclusion ofgraphical depictions of lighting chains |
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