新手求教:
怎样去区分某电路是不是安区低电压?
或者有合适的资料分享,
不胜感激
高手讲解一下安全低电压与低电压的区别
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@sam_qi
SELV:安全特低电压电路(safetyextra-lowvoltagecircuit)其定义为具有适当保护设计之次级电路,即在任意两个可能碰触组件之间或人体可能碰触到任意组件和产品的接地保护端子之间电压不会超过42.4Vacpeak或60Vdc的次级电路;ELV:特低电压电路(extra-lowvoltagecircuit)其定义为在导体与导体之间或导体对地之间的交流电压峰值不超过42.4Vac或直流电压不超过60Vdc的次级电路;
请问,CE,UL,VDE,PSE,这几种安规认证中,哪种是要求严厉的.
他们之间的主要分别在哪.
请指点:
他们之间的主要分别在哪.
请指点:
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EN60335的定义如下:
extra-low voltage
voltage supplied from a source within the appliance that does not exceed 50 V between conductors and between conductors and earth when the appliance is supplied at rated voltage.
导体之间或导体与地之间电压(RMS)不超过50V的电压.
safety extra-low voltage
voltage not exceeding 42 V between conductors and between conductors and earth, the noload voltage not exceeding 50 V When safety extra-low voltage is obtained from the supply mains, it is to be through a safety isolating transformer or a convertor with separate windings, the insulation of which complies with double insulation or reinforced insulation requirements.
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
extra-low voltage
voltage supplied from a source within the appliance that does not exceed 50 V between conductors and between conductors and earth when the appliance is supplied at rated voltage.
导体之间或导体与地之间电压(RMS)不超过50V的电压.
safety extra-low voltage
voltage not exceeding 42 V between conductors and between conductors and earth, the noload voltage not exceeding 50 V When safety extra-low voltage is obtained from the supply mains, it is to be through a safety isolating transformer or a convertor with separate windings, the insulation of which complies with double insulation or reinforced insulation requirements.
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
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