新手求教:
怎樣去區(qū)分某電路是不是安區(qū)低電壓?
或者有合適的資料分享,
不勝感激
高手講解一下安全低電壓與低電壓的區(qū)別
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SELV:安全特低電壓電路(safety extra-low voltage circuit)其定義為具有適當(dāng)保護(hù)設(shè)計(jì)之次級(jí)電路,即在任意兩個(gè)可能碰觸組件之間或人體可能碰觸到任意組件和產(chǎn)品的接地保護(hù)端子之間電壓不會(huì)超過(guò) 42.4Vacpeak或 60Vdc的次級(jí)電路;
ELV:特低電壓電路(extra-low voltage circuit)其定義為在導(dǎo)體與導(dǎo)體之間或?qū)w對(duì)地之間的交流電壓峰值不超過(guò) 42.4Vac或直流電壓不超過(guò) 60Vdc的次級(jí)電路;
ELV:特低電壓電路(extra-low voltage circuit)其定義為在導(dǎo)體與導(dǎo)體之間或?qū)w對(duì)地之間的交流電壓峰值不超過(guò) 42.4Vac或直流電壓不超過(guò) 60Vdc的次級(jí)電路;
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@sam_qi
SELV:安全特低電壓電路(safetyextra-lowvoltagecircuit)其定義為具有適當(dāng)保護(hù)設(shè)計(jì)之次級(jí)電路,即在任意兩個(gè)可能碰觸組件之間或人體可能碰觸到任意組件和產(chǎn)品的接地保護(hù)端子之間電壓不會(huì)超過(guò)42.4Vacpeak或60Vdc的次級(jí)電路;ELV:特低電壓電路(extra-lowvoltagecircuit)其定義為在導(dǎo)體與導(dǎo)體之間或?qū)w對(duì)地之間的交流電壓峰值不超過(guò)42.4Vac或直流電壓不超過(guò)60Vdc的次級(jí)電路;
30VDC吧 還是60VDC?
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@sam_qi
SELV:安全特低電壓電路(safetyextra-lowvoltagecircuit)其定義為具有適當(dāng)保護(hù)設(shè)計(jì)之次級(jí)電路,即在任意兩個(gè)可能碰觸組件之間或人體可能碰觸到任意組件和產(chǎn)品的接地保護(hù)端子之間電壓不會(huì)超過(guò)42.4Vacpeak或60Vdc的次級(jí)電路;ELV:特低電壓電路(extra-lowvoltagecircuit)其定義為在導(dǎo)體與導(dǎo)體之間或?qū)w對(duì)地之間的交流電壓峰值不超過(guò)42.4Vac或直流電壓不超過(guò)60Vdc的次級(jí)電路;
請(qǐng)問(wèn),CE,UL,VDE,PSE,這幾種安規(guī)認(rèn)證中,哪種是要求嚴(yán)厲的.
他們之間的主要分別在哪.
請(qǐng)指點(diǎn):
他們之間的主要分別在哪.
請(qǐng)指點(diǎn):
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EN60335的定義如下:
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.
導(dǎo)體之間或?qū)w與地之間電壓(RMS)不超過(guò)50V的電壓.
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.
導(dǎo)體之間或?qū)w與地之間電壓(RMS)不超過(guò)42V的電壓,空載電壓(RMS)不超過(guò)50V,且該電壓要通過(guò)安全隔離變壓器獲得的.也就是說(shuō)高壓和安全特低電壓之間要滿足雙重絕緣或加強(qiáng)絕緣的要求.安全特低電壓也就是我們通常所說(shuō)的"SELV".
本篇文章來(lái)源于 工業(yè)技術(shù)網(wǎng) 原文鏈接: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.
導(dǎo)體之間或?qū)w與地之間電壓(RMS)不超過(guò)50V的電壓.
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.
導(dǎo)體之間或?qū)w與地之間電壓(RMS)不超過(guò)42V的電壓,空載電壓(RMS)不超過(guò)50V,且該電壓要通過(guò)安全隔離變壓器獲得的.也就是說(shuō)高壓和安全特低電壓之間要滿足雙重絕緣或加強(qiáng)絕緣的要求.安全特低電壓也就是我們通常所說(shuō)的"SELV".
本篇文章來(lái)源于 工業(yè)技術(shù)網(wǎng) 原文鏈接:http://www.nowtech.cn/news/view.asp?id=1872
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