戏尘 发表于 2009-12-14 10:24

60950中欧规测试与UL的差别是什么???

60950中欧规测试与UL的差别是什么???

barry-xu 发表于 2009-12-14 10:56

你这问题严重了, 可以说是基本一样,细节有差异.

guochengsx 发表于 2009-12-14 12:02

希望跟着高手学习学习

Alexsong 发表于 2009-12-14 14:31

你可以参考UL6950-1标准, 其标准中会全部列出和IEC标准的差异, 以下是对标准中差异的说明:
D1 – national differences based on national regulatory requirements which result in
equivalent or more stringent requirements than in IEC 60950-1.
D2 – national differences based on other than national regulatory requirements which
result in equivalent or more stringent requirements than in IEC 60950-1.
DI – national differences based on IEC final draft international standards (FDIS). DI
national differences may be less stringent than, equivalent to, or more stringent than
requirements in IEC 60950-1.
DC – national differences based on UL and CSA component requirements. DC
national differences may be less stringent than, equivalent to, or more stringent than
component requirements in IEC 60950-1.
D3 – national differences based on bi-national requirements which result in less
stringent requirements than in IEC 60950-1.
DE – editorial national differences that correct typographical errors in IEC 60950-1 or
revise the terminology, but do not alter the technical intent of the requirements. This
notation is also used for informative statements such as the Preface.
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