就IEC60950而言,我个人认为根据3.1.1下面的这段话,应该是要有overcurrent protection的,当然不一定是保险丝 1 Q& z2 k- D- N* b2 ^$ |, |" n# z( HAll internal wiring (including busbars) and INTERCONNECTING CABLES used in the distribution of" P/ H; E4 t" e7 i" ~7 t
PRIMARY CIRCUIT power shall be protected against overcurrent and short-circuit by suitably; ?$ y! w3 r! ]
rated protective devices. " w& Y- Q& {& R1 J& I8 u! z4 r+ K但是下面还有一段0 g' m& q' }* e8 R
Wiring not directly involved in the distribution path does not require protection if it can be + d1 [4 E* B1 m& d% eshown that creation of hazards is unlikely (for example, indicating circuits).7 L+ P) _% J8 s) p
也就是说,如果你的充电器不合电网直接连接,而且是不可能产生危险,应该就是可以不用了。 1 V- X0 k, q% @% }0 f: x! \) ^ 1 u u& N+ e7 Q2 j# A: l. b. L: ]以上纯属个人理解。作者: langzhiwen 时间: 2010-10-22 11:09
保护装置必须是要有的,保险丝或者其他元件(如PTC)均可作者: guochengsx 时间: 2010-10-22 11:17
产品不直接与电网连接,供电电压只是低压12V以下,要求有PTC,这是哪个标准要求的呢?作者: Liu 时间: 2010-10-22 11:20