EN 60669-2-1:2004,电子开关IEC/EN 60669-1及60669-2标准中对EMC的要求

EN 60669-1: 1999+A1: 2002 Switchesfor household and similar fixed-electrical installations — Part 1:General requirement是家用和类似用途固定电气安装的开关Switches的通用要求。该标准的第26章是EMC要求（26EMC requirements），注意，60669-1只是General requirement，被Part2的Particular requirements所引用，而Part 2的Particularrequirements才是CE-EMC指令下的协调标准，如EN 60669-2-1: 2004 Switches forhousehold and similar fixed electrical installations — Part 2-1:Particular requirements — Electronic switches

60669-1标准主要适用于manually operatedgeneral purpose switches, for a.c. only with a rated voltage notexceeding 440 V and a rated current not exceeding 63 A, intendedfor household and similar fixed-electrical installations, eitherindoors or outdoors. The rated current is limited to 16 A maximumfor switches provided with screwless terminals.

标准还列出了一些特殊类型的开关，例如electromagneticremote control switches，electronic switches，combinations ofswitches and other functions等等，这些类型的开关可能需要符合EMC的要求。

60669-1标准的第26章EMCrequirements中抗扰度（Immunity）和电磁反射（Emission）都因为产品特性而不需要测试，原文如下：

26.1 Immunity

Switches within the scope of thisstandard are tolerant of electromagnetic disturbances and thereforeno immunity tests are necessary.

26.2 Emission

Electromagnetic disturbances mayonly be generated during switching operations. Since this is notcontinuous no emission tests are necessary.

但在Part 2的Particularrequirements中对各类型的电子开关又给出了具体的测试要求，以EN60669-2-1为例，该标准是电子开关Electronicswitches的特殊要求，标准的第26章也对应60669-1分为26.1 Immunity和26.2Emission两节，让我们来看看具体的测试项目。

EMC测试需要的样板数量是3个，The tests arecarried out with three new specimens，且测试需要在3个样板上分别进行。这是因为在26.1Immunity测试中，如果可能的话，测试需在如下的三种状态下进行：

a) in the on-state, highestsetting,

b) in the on-state, lowestsetting,

c) in the off-state.

Immunity的测试项目见表104，在26.1.1到26.1.7的7小节中还给出了具体的测试参数和性能判据。为了能准确到判断外加的骚扰信号对性能的影响，测试时电子开关必须整定到测量到的或计算出来的输出功率，theelectronic switch is set to the measured or calculated value of theoutput power (r.m.s)

在26.2节Emission的要求中，除了要符合IEC61000-3-2和IEC 61000-3-3之外，还要根据产品应用的情况选择CISPR 14或CISPR15作为EMI项目所依据的标准。

由于开关工作原理的特性，IEC61000-3-2在某些情况下不用测试即可认为符合，Electronic switches withelectromechanically operated contact mechanism (for example, arelay), do not cause harmonic current emissions and are deemed tomeet the requirements of IEC 61000-3-2 without need fortesting.