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一行白鹭上青天 发表于 2021-5-28 17:08
5 n+ p* @3 _8 z$ E4 S% K有的报告里面列了,有的,没有列,不是同一家机构。
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6 C4 Z3 W; p* R请问列不列入CDF有没有什么依据?水压开关也是开 ...
" s) X9 z1 i0 ~9 Z- sod 2020里有定义,但更多的是主观因素,所以有的元件理解起来会有会有偏差9 d# i- V: z6 [+ ]9 p+ q+ f* P( g$ k
4.7.2 The information to be included in the critical components and materials table shall be based on the following ~/ P+ t. J; l/ }' {9 Z. N* L* k. X9 f
a) The CTL clarification: “A safety critical component can only be determined upon a preliminary examination/evaluation of the electrical diagram/design/construction. When the design of the product is such that a determined component, in case of failure, can compromise the safety aspect, this component is defined as “safety critical”.
& Q0 ] t1 x$ D* {) |9 Hb) Components, which have specific requirements in the end product standards.
& _; }. t$ X+ Q! _c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A+ Z" G1 P+ H7 u6 ~2 |! k/ ]
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)
( V. y4 B# ]3 Q8 B& n! H+ je) Professional judgment of the CBTL/NCB
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