lanch：
EN60335的定义如下:extra-lowvoltagevoltagesuppliedfromasourcewithintheappliancethatdoesnotexceed50Vbetweenconductorsandbetweenconductorsandearthwhentheapplianceissuppliedatratedvoltage.导体之间或导体与地之间电压(RMS)不超过50V的电压.safetyextra-lowvoltagevoltagenotexceeding42Vbetweenconductorsandbetweenconductorsandearth,thenoloadvoltagenotexceeding50VWhensafetyextra-lowvoltageisobtainedfromthesupplymains,itistobethroughasafetyisolatingtransformeroraconvertorwithseparatewindings,theinsulationofwhichcomplieswithdoubleinsulationorreinforcedinsulationrequirements.导体之间或导体与地之间电压(RMS)不超过42V的电压,空载电压(RMS)不超过50V,且该电压要通过安全隔离变压器获得的.也就是说高压和安全特低电压之间要满足双重绝缘或加强绝缘的要求.安全特低电压也就是我们通常所说的"SELV".本篇文章来源于工业技术网原文链接:http://www.nowtech.cn/news/view.asp?id=1872