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[MEAS] DSH 313 High Integrity Components, Note

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发表于 2012-9-19 14:42 | 显示全部楼层 |阅读模式
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DSH 313" s1 z8 B- c7 u
High Integrity Components, Note
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14.6) h+ @% L4 Q& j0 i
61010-1(ed.1);am1;am2
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Standard:
* P1 {4 f+ ?, {3 L  F$ w; |IEC 61010-
  W6 @1 b5 W) D$ n1:1990+A1:1992+A2:1995( P+ j' E& a/ O1 z* F) F
Sub clause:3 R# G$ b* I4 ]* O0 v) m+ ]
14.67 S; [1 p: i5 Y/ A/ J6 G8 ?1 _! `5 M
Sheet n. 313& X! M% D1 I6 }7 W9 y
Page 1(1)7 @$ y) j1 u/ X
Subject:5 o% W% Y2 w: I% R) W
High Integrity Components, Note2 B0 g  h" y! I: V+ W4 ]
Key words:
* o) G3 ]/ B4 Z  c6 Z% g- Integrity$ h! `7 y) F) j
- Rating
! U" S& r2 F, B0 cDecision taken by
6 M6 D4 q" M+ W0 F' R, NETF3 and confirmed/ O! M: Q" [' p9 F7 p  G+ e
by CTL at its 38th  a1 m! S0 `5 X) C8 }: i0 L
meeting, in Toronto
# z6 E  D% A/ v" l0 Y% Z* {Question:
* R# x6 v; }1 G. hThe note indicates that a resistor rated for twice the working power level can be considered
) v& q: P7 R* ^! w. Mto be high integrity, similarly it may be considered that capacitors with twice the rated+ w. a4 }+ a; f3 z; h
voltage are high integrity. How is this note applied ?
, O$ q# `, d% t! X* JDecision:
. I* ^, Y8 f; K* uThis note is not clear in its meaning and one is cautioned to take care in its use. A clear/ k' k; n! j0 a; d( P+ v
explanation should always be given when a component which is accepted as high integrity
# z8 z# ~  j" c6 ndoes not have an approval to a recognised standard for that purpose., x5 L" N/ `* t. y6 x
Explanation:2 w+ @; U& G, j# T: `2 J
The note does not provide a comprehensive set of conditions to establish high integrity., C7 ]7 r4 v6 }
Differing methods of construction may result in different lifetime expectation and different
3 M, B6 U0 ^. m: ofailure modes.
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