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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& \+ w; F2 B" R, |
High Integrity Components, Note
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14.6
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61010-1(ed.1);am1;am2
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  r+ q  j, ~7 |/ tStandard:7 S# X, y2 e+ f( M. o* W
IEC 61010-) z& a; Q9 z" ]/ ]6 {. |
1:1990+A1:1992+A2:1995
4 f" V- b$ v5 `: LSub clause:/ k3 a9 x. Z) E& Q8 W& R
14.6
: `& ^( J% J) `( c3 V* {Sheet n. 313
/ I5 [) D0 o' h; O( MPage 1(1)
" Y! @, W5 |: N$ K) U! ~Subject:
" K6 x* j2 _% O0 l9 B/ Z8 LHigh Integrity Components, Note5 J0 x  y! w' ~
Key words:2 A/ z9 Y) g+ P/ C
- Integrity7 d, p3 |( Y. k4 E, K
- Rating. K* G% L: s7 \& u2 K2 c# V
Decision taken by
( B& f6 ~! j3 R9 cETF3 and confirmed8 ?0 x' N; h4 h& l9 N! z% V7 \6 H
by CTL at its 38th" ^: j& {) a! X0 G( B; U0 f
meeting, in Toronto: Q, X' n- e' F9 w- G) F
Question:
! S. [! [: i! p* d" U0 |The note indicates that a resistor rated for twice the working power level can be considered
6 M# S% q1 @' B# o# S2 v. x) eto be high integrity, similarly it may be considered that capacitors with twice the rated
, s. ~  D  i  A5 Pvoltage are high integrity. How is this note applied ?
" Y$ r: f+ k, |$ s% oDecision:
' c$ G9 V8 q, u0 gThis note is not clear in its meaning and one is cautioned to take care in its use. A clear# C: l# `. _% U3 b8 m& ]
explanation should always be given when a component which is accepted as high integrity2 E$ ~% n  H+ {7 p% e6 H$ y7 S" u
does not have an approval to a recognised standard for that purpose.
1 d2 @  k+ ], ?2 @Explanation:3 a/ n5 I2 R* l; Q
The note does not provide a comprehensive set of conditions to establish high integrity.
* `3 ]) D/ O% v- w' V% d4 U* b: L6 dDiffering methods of construction may result in different lifetime expectation and different. y) n& B( p+ E' H& G/ G
failure modes.
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