UL817对于detachable power supply cord 有个条款,即 67.3.1The electrical rating shall be marked on each individual detachable power-supply cord unless the ampere rating of the flexible cord is equal to or greater than the ampere rating of the attachment plug.
为了满足这个要求,就要判断插头的电流与软线的电流之大小,本人的困惑也在此,特举例如下:
问题2、此插头J-001的电气参数是由其configuration决定还是由问题1的ElectricalRating A/V决定?
插头的电气参数应由NEMA结构决定,参阅标准是ANSI/NEMA WD6。unless the ampere rating of the flexible cord is equal to or greater than the ampere rating of the attachment plug.这里单词用的很明确,软线和插头,而不是组件SUPPLY CORD。
对此结论,本人觉得UL817标准之67.3.1The electrical rating shall be marked on each individual detachable power-supply cord unless the ampere rating of the flexible cord is equal to or greater than the ampere rating of the attachment plug.要求永远也用不上,因为按照SP档案生产的插头,其plug的current rating永远是与所用flexible cord对应的,也就意味着,flexible cord 的current永远是equal to the ampere rating of the attachment plug.(除了使用超长flexible cord),那也就意味着正常生产的817,其实都不用贴electrical rating Tag!不知道我的理解是否正确。