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電子開關(guān)IEC/EN 60669-1及60669-2標準中對EMC的要求

2022-03-31 16:21 作者:立訊檢測  | 我要投稿


EN 60669-1: 1999+A1: 2002 Switches for household and similar fixed-electrical installations — Part 1: General requirement是家用和類似用途固定電氣安裝的開關(guān)Switches的通用要求。該標準的第26章是EMC要求(26 EMC requirements),注意,60669-1只是General requirement,被Part 2的Particular requirements所引用,而Part 2的Particular requirements才是CE-EMC指令下的協(xié)調(diào)標準,如EN 60669-2-1: 2004 Switches for household and similar fixed electrical installations — Part 2-1: Particular requirements — Electronic switches

60669-1標準主要適用于manually operated general purpose switches, for a.c. only with a rated voltage not exceeding 440 V and a rated current not exceeding 63 A, intended for household and similar fixed-electrical installations, either indoors or outdoors. The rated current is limited to 16 A maximum for switches provided with screwless terminals.

標準還列出了一些特殊類型的開關(guān),例如electromagnetic remote control switches,electronic switches,combinations of switches and other functions等等,這些類型的開關(guān)可能需要符合EMC的要求。

60669-1標準的第26章EMC requirements中抗擾度(Immunity)和電磁反射(Emission)都因為產(chǎn)品特性而不需要測試,原文如下:

26.1 Immunity

Switches within the scope of this standard are tolerant of electromagnetic disturbances and therefore no immunity tests are necessary.

26.2 Emission

Electromagnetic disturbances may only be generated during switching operations. Since this is not continuous no emission tests are necessary.

但在Part 2的Particular requirements中對各類型的電子開關(guān)又給出了具體的測試要求,以EN 60669-2-1為例,該標準是電子開關(guān)Electronic switches的特殊要求,標準的第26章也對應(yīng)60669-1分為26.1 Immunity和26.2 Emission兩節(jié),讓我們來看看具體的測試項目。

首先,EMC測試需要的樣板數(shù)量是3個,The tests are carried out with three new specimens,且測試需要在3個樣板上分別進行。這是因為在26.1 Immunity測試中,如果可能的話,測試需在如下的三種狀態(tài)下進行:

a) in the on-state, highest setting,

b) in the on-state, lowest setting,

c) in the off-state.

Immunity的測試項目見表104,在26.1.1到26.1.7的7小節(jié)中還給出了具體的測試參數(shù)和性能判據(jù)。為了能準確到判斷外加的騷擾信號對性能的影響,測試時電子開關(guān)必須整定到測量到的或計算出來的輸出功率,the electronic switch is set to the measured or calculated value of the output power (r.m.s)

在26.2節(jié)Emission的要求中,除了要符合IEC 61000-3-2和IEC 61000-3-3之外,還要根據(jù)產(chǎn)品應(yīng)用的情況選擇CISPR 14或CISPR 15作為EMI項目所依據(jù)的標準。

由于開關(guān)工作原理的特性,IEC 61000-3-2在某些情況下不用測試即可認為符合,Electronic switches with electromechanically operated contact mechanism (for example, a relay), do not cause harmonic current emissions and are deemed to meet the requirements of IEC 61000-3-2 without need for testing.


電子開關(guān)IEC/EN 60669-1及60669-2標準中對EMC的要求的評論 (共 條)

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