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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$ a9 [* |* N/ F4 x# {$ t) p/ G
High Integrity Components, Note/ I$ ^# \/ `& ^9 ^
14.6: O! K, O. d& j$ I
61010-1(ed.1);am1;am2
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# ]( J: |% @  ]# T7 VStandard:* V3 P) o9 `! D+ m( l1 ]2 ^9 \
IEC 61010-
7 ?' B3 {: M/ r4 Q% G2 o4 W1:1990+A1:1992+A2:1995
  V# w  k6 E. {, K# U; J: ySub clause:( r9 [6 h* P0 C* u  r7 v, e$ e
14.6
: M' t& q) {3 L7 s- oSheet n. 313
4 ?3 q. l9 V  z2 F8 X$ s+ DPage 1(1)
$ q1 H) C  @2 J, d. ySubject:
1 w6 `2 m6 Z7 d9 E! ~$ i% PHigh Integrity Components, Note) }' k, ~8 a- m+ _$ ]5 ?3 h* Y
Key words:/ g2 q# n! Z2 C8 }# [- Z
- Integrity
! I5 y# k4 d& ]8 z) M- Rating. D! K8 J  M, Y# |8 m, S
Decision taken by6 M/ v" s6 [% d$ h# w* @# D
ETF3 and confirmed8 c, Y& f5 ^  f/ E3 e5 L& {& L4 z
by CTL at its 38th
0 _5 m( R5 W0 S* s/ l2 Kmeeting, in Toronto8 V+ g. R1 A1 r7 M+ s& R& T% W7 ~
Question:2 F! _( f9 }5 R/ n' f
The note indicates that a resistor rated for twice the working power level can be considered
6 @" r1 k4 N5 F' J. W# O5 A5 S! Ato be high integrity, similarly it may be considered that capacitors with twice the rated3 b2 n& A. I' J4 v: l3 a
voltage are high integrity. How is this note applied ?( q) v+ u  }  H1 }/ t' c0 X( P, u
Decision:
8 o% L7 V5 S+ M" CThis note is not clear in its meaning and one is cautioned to take care in its use. A clear% c& \2 B, W, Z* U
explanation should always be given when a component which is accepted as high integrity% y+ R8 J. e- W% v. J
does not have an approval to a recognised standard for that purpose., P2 {$ A7 D0 p
Explanation:' e5 D8 _- P: N- Z9 o' m
The note does not provide a comprehensive set of conditions to establish high integrity.! J) Q6 U) N5 o  Z
Differing methods of construction may result in different lifetime expectation and different- j. G9 _0 R& s% O4 P# I# z/ O4 L# g
failure modes.- m* w$ k2 I. W  K# s

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