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一行白鹭上青天 发表于 2021-5-28 17:08
* r9 m5 o1 Y9 h# B% D有的报告里面列了,有的,没有列,不是同一家机构。$ U: Z; H8 L j# T* r
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请问列不列入CDF有没有什么依据?水压开关也是开 ...
: J6 m/ o0 d2 d5 \+ ^5 yod 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 Y2 `' }/ w! M7 L3 @7 |9 x
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 Z5 y/ d) Q) X; g1 \9 _: v8 t% v
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”.
) Q. m8 v0 g) z" y* t8 m* u. nb) Components, which have specific requirements in the end product standards.' K0 P9 |0 P0 k# u# z& f; x, ~
c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A4 r" k( ]% I. M+ X8 Y8 t& R
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability), z* r. a7 U* b2 g z5 e
e) Professional judgment of the CBTL/NCB) K N: Y# W3 v. F* o+ l2 B
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