并不是这么简单，由认证电源供电就不用考虑故障测试。而是要根据标准4.3的第二段来考虑：if the current which may be drawn from the supplying circuit for more than 2 min at any
load, including short-circuit, is limited to not more than 0,2 A. Such supplied circuits are not
subject to fault conditions testing.
也就是说大部分产品都要考虑故障测试。
同意，但我的理解是两个条件都要满足的！
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